L6 Spring Missing Number Problems within 20

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Year 1 Working Without Worksheets lesson on comparing numbers within 20. Includes planning, vocabulary focus, practical straw bundle activity, and plenary.
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Working Without Worksheets – Year 1 Place Value: Using Comparison Language This Working Without Worksheets lesson helps Year 1 pupils develop confidence in comparing numbers within 20 using key mathematical vocabulary. Children explore the language of more, less, fewer, most, and least to describe groups of objects and numbers. The lesson begins with a starter activity: Recap prior learning from the previous lesson and Autumn Term. Show the teddy bear’s picnic and ask: “Which bears have an equal amount of food to Bertie Bear?” Assess children’s prior understanding of equal by checking who else has 3 items on their plates. In the main input, children learn how to use the language of comparison: Introduce the words more, less, fewer, most and least using animated slides. Carefully explain the subtle difference between less (used for continuous quantities) and fewer (used for countable objects). Model comparing sets of objects, first with small numbers, then increasing to numbers within 20. Use a number track to support reasoning, e.g., “Zach has 12 apples. How many does he have compared to Anna?” Encourage children to verbalise their comparisons in full sentences. The independent activity is practical and engaging: Each table has bundles of straws in groups of 3, each with different amounts. First, children use post-it notes to label the bundle with the least straws and the bundle with the most. Then, they write sentences in their maths books using the language of comparison. Example: “6 straws is more than 4 straws but 10 is the most.” Children are expected to use each of the comparison words at least once in their work. The plenary reinforces key vocabulary: Display several sets of objects on the board and ask children to describe them. Emphasise clear mathematical sentences using more, fewer, less, most, least. Correct any misconceptions and highlight examples of strong reasoning. What’s Included in the Pack? ✔ Full lesson plan with clear objectives and assessm
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