Surf for More Math

Lesson 9 - Uncovering Fact Families

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

Goal

Investigate fact families.

Instructions for Use

Inverse Operations lets students explore fact families.

To use Inverse Operations, decide what number should go in the blank space, then check the answer by clicking on the box.

Inverse Relationship for Addition and Subtraction lets students investigate the inverse relationship between addition and subtraction .

To use Inverse Relationship for Addition and Subtraction, click the "Start Add/Subtract Relationship" button. Decide what number should replace the question mark. Click the numerical button.