## CHAPTER 1: PATTERNS IN MATHEMATICS

**Lesson 6: Describing Relationships Using Expressions **

Use these interactive activities to encourage students to have fun on the Web while learning about patterns in mathematics. Students can try these activities on their own or in pairs.

**Goal**

Use variables in expressions.

**Builds Upon**

Student Book pages 22–25

**Instructions for Use**

**Ambleweb Function Machine** allows students to experiment to determine a pattern rule.

Choose one of the Single Step Operations. Then enter a number as the input and click “Activate” to see the output. Type as many inputs as you need to until you think you know what the pattern rule is.

Write the pattern rule using a variable. Then click “Reveal Program” to see if you are correct.