# Surf for More Math

## CHAPTER 3: ADDITION AND SUBTRACTION STRATEGIES

**Lesson 2: Equal or Not Equal**?

Use these interactive activities to encourage students to have fun on the Web while learning about strategies for addition and subtraction. Students can try these activities on their own or in pairs.

**Goal**

Demonstrate, explain, and record equalities and inequalities.

[C, CN, PS, R, V]

**Instructions for Use**

**Balance Addition Equations** has students balancing addition equations.

To use Balance Addition Equations, enter the number in the space provided that will make the addition equation balanced. Click “Submit” to check your answer. When you have completed a certain number of questions, click “Submit & finish” to view a summary of your score.

**Balance Subtraction Equations** has students balancing subtraction equations.

To use Balance Subtraction Equations, enter the number in the space provided that will make the subtraction equation balanced. Click “Submit” to check your answer. When you have completed a certain number of questions, click “Submit & finish” to view a summary of your score.

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**Definition: Does Not Equal** gives students the definition of does not equal and the symbol used. The inequality symbols are also presented.

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