Rich tasks for this chapter - page 169

• These are problem solving, open-ended questions that require students to investigate equations and relationships. The tasks can be given at the start of a topic and done as the students gain enough knowledge to complete them, inserted into a topic at an appropriate place, or given as homework, or extension.

1. Silly calculators
2. Zed machines

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The equals sign - page 170

• Recognise the rules that someone has used to solve a problem and be able to solve a similar problem in the same way.
• Know the principles of the commutative, associative and distributive rules but not their names.
• Explore and understand that the equals sign means that both sides are of equal value.
• Be able to solve problems using understanding of equals without doing the calculations on both sides.

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Using number strategies to solve equations - page 173

• Use strip diagrams or a knowledge of equals and a family of facts to write more than one equation for a situation and use the most suitable one to find the value of the unknown.
• Use a variety of mental strategies for adding, subtracting and multiplying to solve equations.
• Write an equation to represent a situation and use a variety of numerical strategies to solve it.

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