Addition and subtraction within 10 - Part whole model - Planning

In the initial stages of Year 1 mathematics, children are introduced to the fundamental concepts of addition and subtraction within 10 through the use of the part-whole model. This teaching approach is designed to help pupils understand how numbers can be broken down into parts and then reassembled to form a whole. The lesson utilises various resources such as differentiated worksheets, teaching slides, and physical tools like scissors, glue, and concrete resources to engage the children in hands-on learning. Large and blank part-whole models are also employed to visually represent the mathematical concepts being taught. Key vocabulary such as 'part', 'whole', and 'part-whole model', along with the concept of equality, is emphasised, with additional support materials available to reinforce understanding.

The lesson structure includes a recap of inequality symbols, prompting students to think critically about number relationships. It progresses with activities that encourage the use of the part-whole model in different orientations and with varying content, such as objects, images, and numbers. Partner work fosters discussion and the articulation of mathematical reasoning in complete sentences. Reasoning and problem-solving exercises further challenge the children to explore various groupings and representations within the part-whole framework. The lesson aims to address common misconceptions, such as confusion arising from changing the orientation of the model, and concludes with a reflection segment where children evaluate their learning and understanding. Worksheets tailored to different levels of achievement—Working Towards, Expected, and Greater Depth—guide the children through progressively challenging tasks, solidifying their grasp of the part-whole relationship in a mathematical context.