Addition and subtraction within 10 - Number bonds - Planning

In the Year 1 Autumn term lesson plan focusing on addition and subtraction within 10, the concept of number bonds within 10 is introduced. The lesson begins with a small step starter that asks children to complete 'fluent in four' questions, followed by class teaching input where children use differentiated worksheets, teaching slides, and cubes to explore number bonds. Key vocabulary such as 'addition', 'number sentence', 'part-whole model', and 'partition' are emphasised, with resources available to reinforce the terms. Children are encouraged to write down addition facts starting from a given number sentence, for example, 2 + 7 = 9, and then to explore other combinations that result in the same whole number.

During independent learning, children work in pairs to discuss and write down different ways to partition a set number of cubes and express these as number sentences. They learn to be systematic in finding all pairs of numbers that combine to form a whole, using double-sided counters to ensure no number bonds are missed or repeated. The lesson also links to the part-whole model, where children find pairs that sum up to a particular whole number, like 9, and discuss how they can be sure they have found all possible combinations. The plenary involves reasoning and problem-solving activities where children compare the number of possible number bonds and identify the odd one out. The lesson aims to clear up common misconceptions, particularly the understanding that partitioning is the reverse process of addition. Worksheets are tailored to cater to different levels of understanding, from working towards the expected level to greater depth, where children use various representations to identify all number bonds for a given whole.