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Lesson 5 - How Much is Missing?

To encourage students to have fun on the Web while learning about How Much is Missing?, here are some games and interactive activities they can do on their own or in pairs.

Goal

Solve subtraction problems that have an unknown part.

Instructions for Use

Penguin Pins lets students find how many penguins are missing.

To use Penguin Pins, click on the "10 penguins" button. A bowling ball will strike some penguins and leave others standing. Answer the questions, and click the "Check" button to see if the answers are correct. Click the "Reset" button to play again.

Subtraction Mystery Picture Game lets students match subtraction equations with their answers.

To use Subtraction Mystery Picture Game, click on an equation on the right and then click on the answer on the left to reveal a portion of the picture beneath.