Math Focus 4
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## CHAPTER 1: PATTERNS IN MATHEMATICS

### Lesson 1: Patterns in an Addition Table

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

Identify, describe, and complete patterns in an addition table.

Builds Upon

Student Book pages 4–7

Instructions for Use

Math Tables - Addition allows students to set-up and complete patterns in an addition table.

To use Addition Surprise, click and drag the number under the door on the left to any square on the grid whose row and column numbers add to that number.  If you are correct, the number will stay on that square as a bear with a balloon pops out of the door and the sum is shown below a “Continue” button. Click this button to reveal parts of the picture beneath all the grid squares whose rows and columns add to the number. The door on the left will shut and a new number will display. If you are wrong, the bear will look in the direction of your answer as “Try Again” is displayed. Click on the button and keep answering until you get it right. Continue playing until the picture is fully revealed, then click “Play Again” to start another round.