L4 Compare Mass

Year 2 Spring Term Measurement – Lesson 4: Compare Mass Lesson Overview: In this Working Without Worksheets lesson, Year 2 pupils learn how to compare the mass of objects using balance scales and comparison symbols (<, >, =). Building on their previous understanding of grams, children first revisit the meaning of the symbols and practise completing comparison sentences using images of scales. They then predict, test, and record comparisons between classroom objects, reinforcing key vocabulary such as heavier, lighter, and equal. Through hands-on activities, children develop both their practical measuring skills and their reasoning about mass, while addressing common misconceptions such as “bigger means heavier.” What’s Included in the Pack? ✔ Full lesson plan with clear objectives, teaching notes, and plenary guidance ✔ Animated teaching slides modelling how to compare mass with balance scales ✔ Starter: Revise comparison symbols (<, >, =) and complete sentences using scales images ✔ Teaching input: Predict and test mass of objects using balance scales, record with symbols ✔ Main activity: Partner/group investigation – compare classroom objects and record comparison sentences in maths books ✔ Plenary: Whole-class discussion of results and common errors with comparison symbols ✔ Guidance on misconceptions: size ≠ weight, direction of balance scales, symbol confusion ✔ Practical, active, and worksheet-free learning Why Teachers Love This Resource ✔ Provides clear, structured modelling of comparison symbols in the context of mass ✔ Hands-on exploration builds fluency and confidence with measuring and comparing ✔ Encourages prediction, reasoning, and mathematical sentence writing ✔ Tackles misconceptions explicitly to secure understanding ✔ Fully aligned with Year 2 National Curriculum objectives and Working Without Worksheets pedagogy Curriculum Links (Year 2 Measurement, National Curriculum) This lesson helps children to: ✔ Compare and order mass using balance scales