Deliver a complete Year 7 lesson on adding and subtracting with negative numbers without printing worksheets or assembling extra activities.

This 56-slide Core Maths PowerPoint develops secure understanding through direction, zero pairs, number-line movement and inverse operations. The lesson is structured around explicit I Do–We Do–You Do teaching, moving carefully from representation and worked modelling to guided practice, diagnostic checks and independent application.

The resource includes:

• a retrieval starter with answers;
• essential topic vocabulary;
• a clear number-line representation;
• a concise concept model for all four addition and subtraction cases;
• progressive I Do modelling;
• two guided We Do examples with solutions;
• six-question modelling and solutions;
• eight immediate mini-whiteboard question-and-answer checks;
• 12 minimally different independent questions with answers;
• Developing, Secure and Greater Depth practice on one classroom-ready slide;
• a substantial Super Challenge with a complete solution;
• misconception diagnosis and correction;
• contextual problem solving;
• a constrained reasoning challenge;
• three exam-style questions with solutions and mark guidance;
• an exit check with answers.

Questions are carefully sequenced to expose common errors, including assuming that addition always increases a value and treating subtraction signs independently of the signed number that follows. Fully worked solutions model direction, inverse operations, checking and mathematical explanation.

The lesson is designed for whole-class display and independent pupil work from a single screen. It is editable, print-free and suitable for a Year 7 Core lesson, intervention, revision or cover.