Length and height - Adding lengths - Planning

In the second week of Spring term for Year 1, students embark on a journey to master the concept of adding lengths. This key mathematical skill is introduced through a variety of engaging resources including differentiated worksheets, teaching slides, and hands-on measuring tools like cubes and rulers. The children will utilise their counting abilities, particularly in 2s and 5s, to solve addition problems involving lengths. The lesson's vocabulary focuses on terms such as 'length', 'height', 'measure', 'total', and units of measurement like centimetres (cm). To ensure a clear understanding of the terminology, vocabulary cards and definitions are available to support the learning process. The children will begin by tackling 'fluent in four' questions, preparing them to add the lengths of different objects, both in practical terms and using standard units of measurement.

The lesson is structured to encourage active participation and discussion. Students will work together to understand the concept of adding two lengths, using classroom objects and cubes for practical measurement exercises. They will also explore how to use a ruler effectively, starting from zero and using it as a number line to add additional lengths. As they progress, children will count in 2s to determine the combined lengths of objects like paperclips. Independent work will be supported by differentiated worksheets aimed at developing fluency and reasoning skills. The lesson addresses common misconceptions, such as incorrect starting points when measuring or confusion around addition terminology. The 'Give me five' reflection activity prompts students to consider what they've learned, the skills they've used, and what they found challenging, ensuring they remember key aspects of the lesson. Differentiation caters for a range of abilities, from 'Working Towards' to 'Greater Depth', with tasks designed to challenge each student appropriately and reinforce their understanding of adding lengths.