fractions as part of whole. fractions estimate the answer to a)1 b)2 c)19 d)21
TRANSCRIPT
![Page 1: Fractions as part of whole. Fractions Estimate the answer to a)1 b)2 c)19 d)21](https://reader035.vdocument.in/reader035/viewer/2022062805/5697c00b1a28abf838cc841f/html5/thumbnails/1.jpg)
Fractions
as part of whole
![Page 2: Fractions as part of whole. Fractions Estimate the answer to a)1 b)2 c)19 d)21](https://reader035.vdocument.in/reader035/viewer/2022062805/5697c00b1a28abf838cc841f/html5/thumbnails/2.jpg)
Fractions
Estimate the answer to
a) 1b) 2c) 19d) 21
![Page 3: Fractions as part of whole. Fractions Estimate the answer to a)1 b)2 c)19 d)21](https://reader035.vdocument.in/reader035/viewer/2022062805/5697c00b1a28abf838cc841f/html5/thumbnails/3.jpg)
Fractions
Estimate the answer to
a) 1b) 2c) 19d) 21
• In US test only 24% of 13 year olds chose the right answer
• Majority chose 19 or 21
![Page 4: Fractions as part of whole. Fractions Estimate the answer to a)1 b)2 c)19 d)21](https://reader035.vdocument.in/reader035/viewer/2022062805/5697c00b1a28abf838cc841f/html5/thumbnails/4.jpg)
Typical definition of a fraction
Numerator tells you how many of these pieces to take, count or shade in
Denominator tells you how many parts the whole has been broken up into
![Page 5: Fractions as part of whole. Fractions Estimate the answer to a)1 b)2 c)19 d)21](https://reader035.vdocument.in/reader035/viewer/2022062805/5697c00b1a28abf838cc841f/html5/thumbnails/5.jpg)
But then what about
The numerator is the name of the number of parts of that name
The denominator is the name or the size of the parts. Fifths have that name because 5 equal parts can fill a whole
![Page 6: Fractions as part of whole. Fractions Estimate the answer to a)1 b)2 c)19 d)21](https://reader035.vdocument.in/reader035/viewer/2022062805/5697c00b1a28abf838cc841f/html5/thumbnails/6.jpg)
How I’ve worked with my pre-service teachers on fractions
• SymbolicallyDo the calculation ½-⅕ (or ½ x ⅕)
• Draw a pictureDraw a picture to show how we calculate½-⅕ (or ½ x ⅕)
• Tell a storyProvide me with an everyday story that will lead to the calculation ½-⅕ (or ½ x ⅕)
![Page 7: Fractions as part of whole. Fractions Estimate the answer to a)1 b)2 c)19 d)21](https://reader035.vdocument.in/reader035/viewer/2022062805/5697c00b1a28abf838cc841f/html5/thumbnails/7.jpg)
Question 1
![Page 8: Fractions as part of whole. Fractions Estimate the answer to a)1 b)2 c)19 d)21](https://reader035.vdocument.in/reader035/viewer/2022062805/5697c00b1a28abf838cc841f/html5/thumbnails/8.jpg)
Question 2
![Page 9: Fractions as part of whole. Fractions Estimate the answer to a)1 b)2 c)19 d)21](https://reader035.vdocument.in/reader035/viewer/2022062805/5697c00b1a28abf838cc841f/html5/thumbnails/9.jpg)
Question 3
![Page 10: Fractions as part of whole. Fractions Estimate the answer to a)1 b)2 c)19 d)21](https://reader035.vdocument.in/reader035/viewer/2022062805/5697c00b1a28abf838cc841f/html5/thumbnails/10.jpg)
Question 4
![Page 11: Fractions as part of whole. Fractions Estimate the answer to a)1 b)2 c)19 d)21](https://reader035.vdocument.in/reader035/viewer/2022062805/5697c00b1a28abf838cc841f/html5/thumbnails/11.jpg)
Question 5
![Page 12: Fractions as part of whole. Fractions Estimate the answer to a)1 b)2 c)19 d)21](https://reader035.vdocument.in/reader035/viewer/2022062805/5697c00b1a28abf838cc841f/html5/thumbnails/12.jpg)
Question 6
![Page 13: Fractions as part of whole. Fractions Estimate the answer to a)1 b)2 c)19 d)21](https://reader035.vdocument.in/reader035/viewer/2022062805/5697c00b1a28abf838cc841f/html5/thumbnails/13.jpg)
Question 7
![Page 14: Fractions as part of whole. Fractions Estimate the answer to a)1 b)2 c)19 d)21](https://reader035.vdocument.in/reader035/viewer/2022062805/5697c00b1a28abf838cc841f/html5/thumbnails/14.jpg)
Trying it out
• SymbolicallyDo the calculation ½-⅕ (or ½ x ⅕)
• Draw a pictureDraw a picture to show how we calculate½-⅕ (or ½ x ⅕)
• Tell a storyProvide me with an everyday story that will lead to the calculation ½-⅕ (or ½ x ⅕)
![Page 15: Fractions as part of whole. Fractions Estimate the answer to a)1 b)2 c)19 d)21](https://reader035.vdocument.in/reader035/viewer/2022062805/5697c00b1a28abf838cc841f/html5/thumbnails/15.jpg)
![Page 16: Fractions as part of whole. Fractions Estimate the answer to a)1 b)2 c)19 d)21](https://reader035.vdocument.in/reader035/viewer/2022062805/5697c00b1a28abf838cc841f/html5/thumbnails/16.jpg)
½×⅕
![Page 17: Fractions as part of whole. Fractions Estimate the answer to a)1 b)2 c)19 d)21](https://reader035.vdocument.in/reader035/viewer/2022062805/5697c00b1a28abf838cc841f/html5/thumbnails/17.jpg)
⅕×½