Place Value within 20 - Count one more and one less - Planning

The first week of Year 1 Autumn term maths planning introduces the concept of 'One more and one less' within the context of place value up to 20. The lesson employs a variety of resources, including differentiated worksheets, teaching slides, and tangible items like base 10 blocks or counters, to aid children's understanding. Key vocabulary such as 'number', 'count', 'tens', 'ones', and 'represent' is emphasised, with the option to access vocabulary cards and definitions online for further clarification. The session starts with a fun 'I'm thinking of a number' game that utilises tens and ones to give clues. Children then work in pairs, discussing and identifying one more or one less than a given number using base 10 representations, and are encouraged to articulate their thought process. The lesson aims to consolidate their counting skills and understanding of place value.

As the lesson progresses, children are presented with various activities that challenge them to represent numbers and determine one more or one less. They practise counting on from 10, adding and subtracting ones, and understanding how these actions change the number. Reasoning and problem-solving exercises are integrated into the lesson, where children analyse patterns, relate them to number tracks, and apply their knowledge to real-life contexts, such as determining the ages of siblings. The lesson concludes with a plenary where children reflect on what they've learned, the skills they've used, and how the equipment or guidance from an adult helped them. The planning also outlines expectations for different levels of achievement, from working towards understanding to demonstrating greater depth in place value knowledge, ensuring that all children can progress and build confidence in finding one more and one less.