Math Focus 5
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# Surf for More Math

## CHAPTER 1: PATTERNS IN MATHEMATICS

### Lesson 7: Using Equations to Solve Problems

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 equations to represent and solve problems.

Builds Upon
Student Book pages 26–29

Instructions for Use

Algebra Puzzle allows students to solve problems involving unknown values.

Find the value of each of the three objects presented in the puzzle. The numbers given represent the sum of the objects in each row or column. Sometimes, only one object will appear in a row or column. That makes the puzzle easier to solve. Other times, you will have to look for relationships among the objects.

Wang Doodles allows students to solve problems involving unknown values.

Your job is to find the weight of each Wangdoodle using the information provided by the scales. To be successful, you will have to make sure that the weight you assign to each Wangdoodle works on each scale. This activity is a fun but challenging introduction to multiple algebraic equations.

Algebraic Reasoning allows students to solve problems involving unknown values.

Learn how to think algebraically with these clever weighing scales. Levels 1 and 2 contain two scales. Level 3 is more difficult and has three scales. Your goal is to determine the weight of one or more of the objects.