Addition and subtraction within 10 - Finding a part - Planning

The Year 1 Autumn curriculum for addition and subtraction within 10 introduces a key concept in week 3: Finding a part. This lesson aims to strengthen the understanding of number bonds and the part-whole relationship using a variety of resources such as differentiated worksheets, teaching slides, and practical tools like cubes and counters. The key vocabulary includes terms like 'add', 'subtract', 'number bonds', 'counting on', 'missing parts', 'part-whole', 'value', and 'number sentence'. Children are encouraged to explore these concepts through 'fluent in four' questions, which will soon be available, and to utilise vocabulary cards and definitions found on the accompanying website.

The lesson is structured to build on previous knowledge, with children applying their skills to identify missing numbers within number bonds to 10. They will engage with a large part-whole model, using counting on from a given part to find the missing part and understanding the role of zero. Activities progress from counting on with counters and completing number sentences, to creating simple stories that reflect the mathematical facts. Reasoning and problem-solving tasks involve using the part-whole model to deduce purchases made by children in various scenarios. The lesson also addresses common misconceptions, such as the orientation of the part-whole model and the starting point when counting on. The plenary includes a reflective 'Give me five' activity, where children articulate their learning, the skills they've used, and what they found challenging, ensuring they remember key concepts. Differentiated sheets cater to varying levels of understanding, from working towards expected standards to achieving greater depth in understanding the part-whole relationship.