div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 2button div class=ts-image amp-img class=ts-thumb alt=Page 2: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 3button div class=ts-image amp-img class=ts-thumb alt=Page 3: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails3jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 4button div class=ts-image amp-img class=ts-thumb alt=Page 4: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails4jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 5button div class=ts-image amp-img class=ts-thumb alt=Page 5: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails5jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 6button div class=ts-image amp-img class=ts-thumb alt=Page 6: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails6jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 7button div class=ts-image amp-img class=ts-thumb alt=Page 7: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails7jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 8button div class=ts-image amp-img class=ts-thumb alt=Page 8: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails8jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 9button div class=ts-image amp-img class=ts-thumb alt=Page 9: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails9jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 10button div class=ts-image amp-img class=ts-thumb alt=Page 10: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails10jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 11button div class=ts-image amp-img class=ts-thumb alt=Page 11: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails11jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 12button div class=ts-image amp-img class=ts-thumb alt=Page 12: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails12jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 13button div class=ts-image amp-img class=ts-thumb alt=Page 13: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails13jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 14button div class=ts-image amp-img class=ts-thumb alt=Page 14: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails14jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 15button div class=ts-image amp-img class=ts-thumb alt=Page 15: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails15jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 16button div class=ts-image amp-img class=ts-thumb alt=Page 16: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails16jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 17button div class=ts-image amp-img class=ts-thumb alt=Page 17: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails17jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 18button div class=ts-image amp-img class=ts-thumb alt=Page 18: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails18jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 19button div class=ts-image amp-img class=ts-thumb alt=Page 19: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails19jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 20button div class=ts-image amp-img class=ts-thumb alt=Page 20: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails20jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 21button div class=ts-image amp-img class=ts-thumb alt=Page 21: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails21jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 22button div class=ts-image amp-img class=ts-thumb alt=Page 22: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails22jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 23button div class=ts-image amp-img class=ts-thumb alt=Page 23: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails23jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 24button div class=ts-image amp-img class=ts-thumb alt=Page 24: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails24jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 25button div class=ts-image amp-img class=ts-thumb alt=Page 25: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails25jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 26button div class=ts-image amp-img class=ts-thumb alt=Page 26: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails26jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 27button div class=ts-image amp-img class=ts-thumb alt=Page 27: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails27jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 28button div class=ts-image amp-img class=ts-thumb alt=Page 28: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails28jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 29button div class=ts-image amp-img class=ts-thumb alt=Page 29: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails29jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 30button div class=ts-image amp-img class=ts-thumb alt=Page 30: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails30jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 31button div class=ts-image amp-img class=ts-thumb alt=Page 31: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails31jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 32button div class=ts-image amp-img class=ts-thumb alt=Page 32: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails32jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 33button div class=ts-image amp-img class=ts-thumb alt=Page 33: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails33jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 34button div class=ts-image amp-img class=ts-thumb alt=Page 34: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails34jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 35button div class=ts-image amp-img class=ts-thumb alt=Page 35: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails35jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 36button div class=ts-image amp-img class=ts-thumb alt=Page 36: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails36jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 37button div class=ts-image amp-img class=ts-thumb alt=Page 37: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails37jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 38button div class=ts-image amp-img class=ts-thumb alt=Page 38: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails38jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 39button div class=ts-image amp-img class=ts-thumb alt=Page 39: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails39jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 40button div class=ts-image amp-img class=ts-thumb alt=Page 40: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails40jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 41button div class=ts-image amp-img class=ts-thumb alt=Page 41: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails41jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 42button div class=ts-image amp-img class=ts-thumb alt=Page 42: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails42jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 43button div class=ts-image amp-img class=ts-thumb alt=Page 43: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails43jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 44button div class=ts-image amp-img class=ts-thumb alt=Page 44: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails44jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 45button div class=ts-image amp-img class=ts-thumb alt=Page 45: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails45jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 46button div class=ts-image amp-img class=ts-thumb alt=Page 46: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails46jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 47button div class=ts-image amp-img class=ts-thumb alt=Page 47: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails47jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 48button div class=ts-image amp-img class=ts-thumb alt=Page 48: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails48jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 49button div class=ts-image amp-img class=ts-thumb alt=Page 49: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails49jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 50button div class=ts-image amp-img class=ts-thumb alt=Page 50: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails50jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 51button div class=ts-image amp-img class=ts-thumb alt=Page 51: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails51jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 52button div class=ts-image amp-img class=ts-thumb alt=Page 52: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails52jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 53button div class=ts-image amp-img class=ts-thumb alt=Page 53: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails53jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 54button div class=ts-image amp-img class=ts-thumb alt=Page 54: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails54jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 55button div class=ts-image amp-img class=ts-thumb alt=Page 55: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails55jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 56button div class=ts-image amp-img class=ts-thumb alt=Page 56: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails56jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 57button div class=ts-image amp-img class=ts-thumb alt=Page 57: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails57jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 58button div class=ts-image amp-img class=ts-thumb alt=Page 58: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails58jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 59button div class=ts-image amp-img class=ts-thumb alt=Page 59: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails59jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 60button div class=ts-image amp-img class=ts-thumb alt=Page 60: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails60jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 61button div class=ts-image amp-img class=ts-thumb alt=Page 61: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails61jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 62button div class=ts-image amp-img class=ts-thumb alt=Page 62: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails62jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 63button div class=ts-image amp-img class=ts-thumb alt=Page 63: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails63jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 64button div class=ts-image amp-img class=ts-thumb alt=Page 64: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails64jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 65button div class=ts-image amp-img class=ts-thumb alt=Page 65: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails65jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 66button div class=ts-image amp-img class=ts-thumb alt=Page 66: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails66jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 67button div class=ts-image amp-img class=ts-thumb alt=Page 67: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails67jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 68button div class=ts-image amp-img class=ts-thumb alt=Page 68: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails68jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 69button div class=ts-image amp-img class=ts-thumb alt=Page 69: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails69jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 70button div class=ts-image amp-img class=ts-thumb alt=Page 70: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails70jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 71button div class=ts-image amp-img class=ts-thumb alt=Page 71: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails71jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 72button div class=ts-image amp-img class=ts-thumb alt=Page 72: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails72jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 73button div class=ts-image amp-img class=ts-thumb alt=Page 73: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails73jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 74button div class=ts-image amp-img class=ts-thumb alt=Page 74: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails74jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 75button div class=ts-image amp-img class=ts-thumb alt=Page 75: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails75jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 76button div class=ts-image amp-img class=ts-thumb alt=Page 76: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails76jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 77button div class=ts-image amp-img class=ts-thumb alt=Page 77: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails77jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 78button div class=ts-image amp-img class=ts-thumb alt=Page 78: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails78jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 79button div class=ts-image amp-img class=ts-thumb alt=Page 79: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails79jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 80button div class=ts-image amp-img class=ts-thumb alt=Page 80: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails80jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 81button div class=ts-image amp-img class=ts-thumb alt=Page 81: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails81jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 82button div class=ts-image amp-img class=ts-thumb alt=Page 82: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails82jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 83button div class=ts-image amp-img class=ts-thumb alt=Page 83: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails83jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 84button div class=ts-image amp-img class=ts-thumb alt=Page 84: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails84jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 85button div class=ts-image amp-img class=ts-thumb alt=Page 85: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails85jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 86button div class=ts-image amp-img class=ts-thumb alt=Page 86: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails86jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 87button div class=ts-image amp-img class=ts-thumb alt=Page 87: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails87jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 88button div class=ts-image amp-img class=ts-thumb alt=Page 88: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails88jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 89button div class=ts-image amp-img class=ts-thumb alt=Page 89: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails89jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 90button div class=ts-image amp-img class=ts-thumb alt=Page 90: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails90jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 91button div class=ts-image amp-img class=ts-thumb alt=Page 91: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails91jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 92button div class=ts-image amp-img class=ts-thumb alt=Page 92: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails92jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 93button div class=ts-image amp-img class=ts-thumb alt=Page 93: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails93jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 94button div class=ts-image amp-img class=ts-thumb alt=Page 94: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails94jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 95button div class=ts-image amp-img class=ts-thumb alt=Page 95: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails95jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 96button div class=ts-image amp-img class=ts-thumb alt=Page 96: Lesson-1 - Basic Concepts 88 MBdownloadnosorgsrsec327book1pdf · gave birth to a device or machine called computer and Chinese people The word ABACUS means Fig src=https:reader034vdocumentinreader034viewer20220518025af950467f8b9aac248e3f55html5thumbnails96jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 97button div class=ts-image amp-img class=ts-thumb alt=Page 97: Lesson-1 - 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