Negative Numbers — Interactive Lesson & Activities (Ages 9–11)

Do your pupils get muddled about which way negative numbers go? This 16-slide interactive lesson uses thermometers and number lines to make negative numbers clear.

Understanding Negative Numbers in Year 5–6 Maths

Pupils learn to recognise and use numbers below zero and to read them on a number line. They work out the missing values on part of a thermometer, find how far a temperature is above or below zero, read missing numbers on number lines, including decimals, and finish by dragging numbers to their correct positions on a number line.

What’s Included

• 16-slide interactive lesson using thermometers and number lines
• Learning objectives: recognise and use numbers below zero and read them on a number line
• Thermometer questions on temperatures above and below 0°C
• Number line questions finding missing values
• A drag-and-drop activity ordering numbers on a number line

Key Benefits for Students

• Makes the position of numbers below zero visual and concrete
• Thermometers link negative numbers to everyday temperatures
• Instant feedback shows straight away whether an answer is right
• Builds a secure base for later calculations below zero

Why Teachers Love It

• No prep — ready for whole-class teaching on an interactive whiteboard
• Self-marking questions support independent practice
• Number lines and thermometers are easy to explain
• Suits teaching, revision and homework
• A concise lesson that fits neatly into a single session

Love this? You’ll love…

• Adding and Subtracting Negative Numbers — Interactive Lesson (Ages 10–11)
• Coordinates in the Four Quadrants — Interactive Lesson (Ages 10–11)
• Rounding Numbers — Interactive Lesson (Ages 10–11)

A dependable addition to a KS2 number topic, giving pupils a clear picture of numbers below zero before they start adding and subtracting them. Confidence with the number line here supports work on temperature, coordinates and algebra later on.

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FAQ

What year group is this for? Years 5–6 (ages 9–11).

Does it use number lines? Yes — pupils read and order numbers on number lines.

Is it self-marking? Yes, with instant feedback on the questions.