# Surf for More Math

## CHAPTER 3: ADDITION AND SUBTRACTION STRATEGIES

**Lesson 8: Using an Addition Table **

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**

Identify and use patterns in an addition table.

Create a story problem for a given solution.

[C, CN, PS, R, V]

**Instructions for Use**

**Interactive Addition Table** is an interactive addition table for student to fill in.

To use Interactive Addition Table, select the correct number from the list of numbers to the right of the table and drag it to the correct square in the table.

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**Addition Suprise** lets your child practice finding sums 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.