Education Technology

# Activities

• ##### Subject Area

• Math: Elementary Math: Basic Facts
• Math: Elementary Math: Math and Literature
• Math: Elementary Math: Number Sense and Estimation
• Math: Elementary Math: Number Operations

K-5

60 Minutes

• TI-10
• ##### Other Materials
This is Activity 3 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
• Wooden tongue depressors
• Glue
• Place value mats (made from 12"x 18" construction paper)

## Crunching Numbers

#### Activity Overview

Students learn to build and add two digit numbers. They connect number words and numerals.

#### Before the Activity

• See the attached PDF file for detailed instructions for this activity
• Print pages 33 - 44 from the attached PDF file for your class
• #### During the Activity

Distribute the page to the class.

Activity A:

• Show and read the Cheerios Counting Book to students

• Activity B:
• Pass out 100 Cheerios, cups, and place value mats
• Call out a number
• Students make the number and write the number on the mat
• Using tens and ones, show how to add 2 digit numbers on the mat

• Activity C:
• Use the calculator to add 2-digit numbers
• Identify the place value of the digits

• Activity D:
• Ask students to add some two-digit numbers with the help of Cheerios and re-grouping

• Activity E:
• Build and add 2-digit numbers with the help of the calculator
• Write the numbers in place value language
• #### After the Activity

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