Unit 1, Lesson 1Unit 1, Lesson 1First NamesFirst Names

Unit 1, Lesson 1Unit 1, Lesson 1First NamesFirst Names

Three Day Lab Lesson• This lesson is a lab. • We will explore the length of our

names and create a class data table and graph.

• Later, we will also make individual data tables and graphs.

This is What We Will Learn

• To identify and use variables• To make and interpret bar graphs• To collect, organize, graph, and analyze

data• That problems can be solved by more

than one method and that different methods should give us the same results

• To use data in tables and graphs to make predictions

Vocabulary• First Name – You will use the first

name you use in school.• Variable – Something that is

different. There are two variables in this lesson.– The number of students in the class.– The number of letters in each name.

Collecting the Data• Write your name on a post-it note• Count the letters• Show the number of letters like this

•L=______• Place the post-it notes on the data

table

Analyzing the Data Discuss these questions with your

partner and group. We will answer as a group.

• What do you notice about the data?• Who has the longest name? What is the

number of letters in that name?• Who has the shortest name? What is the

number of letters in that name?• Does anyone have a first name with

eight letters?

Vocabulary• Most common – what happens or

occurs most often. Fourteen of my fifteen students have a dog for a pet. So, a dog is the most common pet.

Analyzing the Data• How many students have first

names with six letters? Five letters?• What number of letters is most

common in first names?• Do more than half the students

have names that have either six or seven letters?

Adding a Third Column

• This column will tell us how many students have names with the same number of letters.

• What title should we give it? Why?• Would N for Number of Students

be a good choice to represent this variable? Why or why not?

Complete the S Column Discuss these questions with your

partner and group.• What is the total or sum of the

numbers in that column?• What does this sum represent?• Be sure to CHECK THE DATA!

Vocabulary• Vertical – Up and down, numbers

or shapes are arranged like a vine from the bottom to the top.

• Horizontal – Side to side, numbers or shapes are arranged from side to side, sitting on a line like the ground or floor.

Graphing the Data• Fill in the data table on page 5 • Make the graph on page 5 Discuss these questions with your

partner and group.• Where is the vertical axis? What is the

label for this axis?• Where is the horizontal axis? What is

the label for this axis?

Graphing the Data• Which numbers are the number of

letters in the names? Those on the horizontal axis or those on the vertical axis?

• What do the numbers on the vertical axis show?

Exploring the Data You will answer the following

questions by raising your hand and answering on “Go.”

• How many letters are in the longest name?

• How many letters are in the shortest name?

Exploring the Data• What is the most common number of

letters?• How many students have names with

six letters?• How many students have names with

five letters?• Do more than half the students have

names with either six or seven letters? How did you figure this out?

Exploring the Data Discuss these questions with your

partner and group.• What is the shape of the graph? Why

does it have this shape?• Compare the graph and the data table.

How are they alike? How are they different?

• Which bars are the same height? Why?

Exploring Data• Why aren’t there bars above every

number on the horizontal axis? What does this mean?

Organizing Materials• Put your First Names Data Table

and Graph in your math folder.• You will use this page tomorrow to

write in your journal. The prompt follows.

JOURNAL PROMPT This is your prompt for tomorrow

morning. • Explain how the graph would be

different for full (first and last) names. Your classmates’ first and last names will be on the white board.

Classmates’ NamesNirmit Brahmbhatt Tykita CorbinJasmine Carmean Sky DoughtySolomon Duverger Makayla SteeleMorgan Edwards Tegan ShockleyDimitrius Hamlin Desiree HareAnthony Pimental Anthony PavoneArmani Vermillion Douglas WilleyRobert Williamson

EXTENSIONS• What if we used full names? What

will happen to your graph.• What if we changed the definition

of name length? What if we used number of syllables or number of vowels in each name, instead of number of letters?

This is What We Have Learned

• To identify and use variables• To make and interpret bar graphs• To collect, organize, graph, and analyze

data• That problems can be solved by more

than one method and that different methods should give us the same results

• To use data in tables and graphs to make predictions