This displays some calculations done by Max and asks how Max would do some other similar calculations.

This is a good way to revise some of the strategies used for addition, subtraction and

multiplication.

This displays some scales and asks for the missing amount that is required to make them balance.

This displays two pairs of number strips and asks students to write an addition and a subtraction equation to match each set.

Pegs

You could use pegs on a number line to illustrate how, when subtracting, the difference remains the same as long as you move the pegs by the same amount (add or subtract the same amount from each of the numbers being subtracted).

You can also use pegs on a number line to illustrate how, when adding two numbers, the same amount has to be taken from one number and added to the other to keep the total the same.

This displays the Getting started on page 167.

You could extend this by giving a similar problem with larger numbers such as this:

Two items for the school cost $472.

What might each be and how much might they have cost?

This displays some Cuisenaire rods representing strip diagrams and asks students to write all the possible equations they can think of for each one.

This displays a problem and works through the steps to write an equation in several different ways:

using a strip diagram

using family of facts

and using knowledge of the equals sign.

Students then decide which one to use to find the value of the unknown.