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Nelson Education > School > Mathematics K-8 > Math Focus > Grade 4 > Teacher Centre > Surf for More Math > Chapter 6 - Lesson 4

Surf For More Math


Lesson 4: Halving and Doubling Multiplication Facts

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


Halve and double facts you know to calculate other multiplication facts.

Builds Upon

Student Book pages 178-180

Instructions for Use

Meteor Multiplication allows students to test their multiplication skills.

To use Meteor Multiplication, click on the “start” button. Read the instructions on the next page and click “next” to read the rest of the instructions. Click “play”. You can use the arrow keys on the keyboard to move your spaceship and press enter to aim at the meteor with the correct answer. You can also click on the meteor with your mouse. If you are correct, the meteor will disintegrate and another one will take its place. If you click on the incorrect answer, the meteor will get closer to your spaceship. Each level is one minute. When the level is complete, you will see a screen with “What I missed” which will show the equation, your answer and the correct answer so students can learn from their mistakes.

Space Racer X allows students to test their multiplication skills

To use Space Racer X click “Start Game”. You will be given two equations to solve. Type your answer in the white box and then press enter on your keyboard. Solving the left equation correctly will move your rocket ship to the left. Solving the right equation correctly will move your rocket ship to the right. Sometimes you have to make two moves right or left. You must navigate your rocket ship through the solar system and avoid the asteroids. Your goal is to travel as far as possible while gaining points and getting faster. The game ends when your rocket ship hits an asteroid.