Addition and subtraction within 20 - Add ones using number bonds 2 - Planning

In the Year 1 Spring curriculum focusing on addition and subtraction within 20, the lesson on 'Add ones using Number Bonds' is designed to enhance children's understanding of related calculations through addition. The lesson begins with a recap of number bonds, where children use two-sided counters to find number bonds to 10, establishing the foundational concept that knowing number bonds to 10 also helps in understanding number bonds to 20. The class teaching input includes differentiated worksheets, teaching slides, and practical resources like ten frames and two-sided counters to facilitate hands-on learning.

The first activity introduces the part-whole model, illustrating how adding 10 affects a number. Children are encouraged to independently determine the components that make up the number 14, deciding whether to represent it as 1 and 4 or 10 and 4, and to understand the reasoning behind their choice. In the second activity, children explore adding a ten to different sides of a calculation, using number pieces to visually and practically comprehend the concept. The third activity provides practice in answering related calculation questions. The plenary includes a 'Give me five' reflection exercise, where children consider what they have learned, the skills they used, what they found challenging, the support they received, and what they will remember from the lesson. The lesson is differentiated to cater to various levels of understanding, from 'Working Towards' to 'Greater Depth', with activities ranging from having number bonds worked out for them to writing their own related calculations and finding missing numbers independently.