# Activities

• • • ##### Subject Area

• Math: Elementary Math: Algebraic Thinking
• Math: Elementary Math: Number Sense and Estimation
• Math: Elementary Math: Math and Literature

• ##### Author K-5

60 Minutes

• TI-10
• ##### Other Materials
This is Activity 2 from the EXPLORATIONS Book:
Math at Your Fingertips with the TI-10

The following materials are required for this activity:
• Book: The Cheerios Counting Book
• Cheerios®
• 2-ounce condiment cups
• Number name activity sheets
• Blank Number Name activity sheet

Food for Thought

#### Activity Overview

Students learn to count in tens up to 100. They also learn to build 2-digit numbers.

#### Before the Activity

• See the attached PDF file for detailed instructions for this activity
• Print pages 17 - 31 from the attached PDF file for your class
• #### During the Activity

Distribute the page to the class.

Activity A:

• Show the Cheerios Counting Book to students and ask them to make predictions about the other numbers that might be in the book

• Activity B:
• Pass out one hundred Cheerios and ten condiment cups to groups of students
• Group the Cheerios to count to 20
• Instruct students to use the Cheerios and cups to make, say, and draw a picture of each number as they count from 10 to 20
• Enter the number in the calculator

• Activity C:
• Place a transparent cup with ten Cheerios (this cup stands for ten) on the overhead projector
• Place one more Cheerio on the overhead projector and explain the number eleven
• Use the TI-10 calculator and the number name activity sheet to count from 10 to 20

• Activity D:
• Using cups of ten, ask students to count 100

• Activity E:
• Use the calculator and the activity sheet to make, say, draw, and record numbers from 10 to 100
• View the number sentences on the calculator

• Activity F:
• Call out numbers, students make the numbers using Cheerios and cups, and enter the numbers in the calculator
• Use the Place Value feature to increase the understanding of the tens and ones that make up the numbers
• #### After the Activity

• Review student results
• As a class, discuss questions that appeared to be more challenging
• Re-teach concepts as necessary