Doubling and halving

A number talk

Collect resources

You will need:

Items to create a mathematical model

  • pens or pencils

  • scissors

  • plain paper, grid paper or dot paper.

Watch the video to see what to do.

Transcript

Transcript coming soon.

Discuss/reflect

  • Create a mathematical model to show how you could use doubling and halving to solve 6 x 8. You could use grid paper, dot paper, or even draw a comic strip!

  • Find 3 examples where doubling and halving isn't an efficient strategy.

    • Why is it more efficient for some problems and not for others?