Whole Number & Decimal - Lesson 3 - Negative Numbers

The ‘Why’: Why do we count a value of less than zero?

This lesson starts by introducing the idea of a bank statement with money going and out of an account in different ways. At one point, a standing order for £100 comes out when only £99 exists in the account. It may be worth explaining what a standing order is although some will understand this implicitly. Debt is in fact the origin of negative numbers which is why the lesson starts here.

It then goes on to use other real life examples including temperature and moods.

Some mastery tasks are included in this from the White rose SOW including the number line and problem solving activities.

Activities included:
Bank Statement Starter
Temperature Explanation
Number Lines Activity
Temperature around the world
Adding & Subtracting Negative numbers
Mini Whiteboard Activity
Moods
Walking in a line to Multiply