Solving Inequalities — Interactive Lesson (GCSE, Ages 14–16)

Still catching yourself forgetting to flip the inequality sign under exam conditions? This 23-slide interactive lesson gives GCSE pupils focused, self-marking practice solving linear inequalities.

Mastering Inequalities in GCSE Maths

Pupils practise solving linear inequalities, including the rule for flipping the inequality sign when multiplying or dividing by a negative, building the fluency within the GCSE Maths curriculum’s algebra strand. This sign-flipping rule is a genuinely common source of lost marks even among otherwise confident pupils, and this lesson gives focused, repeated practice applying it correctly under exam-style conditions.

What’s Included

• 23-slide interactive lesson on solving inequalities
• Practice applying the sign-flipping rule correctly
• Self-marking activities with instant feedback
• A focused, exam-style approach to the full solving method

Key Benefits for Students

• Builds genuine fluency solving inequalities under exam conditions
• Instant feedback confirms correct working straight away
• Secures the sign-flipping rule before it costs real exam marks
• A concise, focused lesson that fits neatly into a single session
• Reinforces the connection between solving equations and this related skill

Why Teachers Love It

• No prep — ready to use on any interactive whiteboard
• Self-marking format supports independent practice
• A concise starter, plenary or revision activity
• A dependable resource for a skill pupils often find tricky

Love this? You’ll love…

• Factorising Quadratic Expressions — Interactive Lesson (Ages 14–16)
• Writing Numbers in Standard Form — Interactive Lesson (Ages 14–16)
• Representing Inequalities on a Number Line — Interactive Lesson (Ages 14–16)

A strong addition to any GCSE algebra topic, whether taught as the main lesson or used for focused revision closer to an exam covering this area of algebra. Pupils who master the sign-flipping rule confidently here carry that same care into every later topic that touches this skill, well beyond this single lesson.

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FAQ

What year groups is this for? GCSE (Years 10–11, ages 14–16).

Does it cover the sign-flipping rule? Yes, this is covered explicitly throughout the lesson.

Is it self-marking? Yes, instant feedback throughout.