Education Technology

# Names for One-Half

Math: Elementary Math: Algebraic Thinking
Math: Elementary Math: Number Operations
K-5
60 Minutes
TI-15 Explorer™/TI-10
This is Activity 5 from the EXPLORATIONS Book:
Uncovering Math with Manipulatives, the TI-10, and the TI-15 Explorer

The following material is required for this activity:
• Pencils
Lessons

# Names for One-Half

Activity Overview

Students use their understanding of integers, fractions, decimals, and operations to find mathematical expressions that equal one-half.

Before the Activity

• See the attached PDF file for detailed instructions for this activity
• Print student activity sheet page 23 from the attached PDF file for your class
• During the Activity

Distribute the page to the class.

• Express one-half in several different ways - using different situations, whole numbers, fractions, and decimals
• Find different names for one-half
• Use a calculator to record as many names for one-half as possible
• Compare the expressions and separate them into categories
• Select one of your categories and write more expressions that fit that category
• Describe a real-life situation for one category
• After the Activity

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