Addition and subtraction - Add two-digit numbers - Planning​

Year 3 students delve into the realm of addition and subtraction with a focus on adding two-digit numbers, particularly when crossing the ten boundary. The lesson utilises a range of resources including Base 10 blocks, place value grids, worksheets, and a presentation to facilitate learning. Key vocabulary such as 'addition', 'exchange', 'tens', and 'ones' is introduced to ensure clarity in communication. Students begin with a 'fluent in four' exercise to refresh their understanding of the concepts. The class teaching input encourages children to use Base 10 and partitioning to add two-digit numbers, with an emphasis on the skill of exchanging when the sum of the ones exceeds ten. Practical activities with manipulatives help to reinforce this concept, and children are prompted to represent their calculations in various ways and to create number stories to contextualise their learning.

Group work further embeds the learning as students use their resources to solve real-world problems involving addition, such as combining the number of pencils in two classes. They are guided to focus on the important numerical information and to apply their understanding of exchanging ones for tens. Independent work through differentiated worksheets allows for consolidation of skills, while reasoning activities encourage verbal explanation and exploration of multiple solutions. The lesson concludes with a reflective 'Give me five' activity where students evaluate what they've learned, the skills they've used, any challenges they faced, and the support that aided them. The lesson is structured to cater to different levels of proficiency, from 'working towards' to 'greater depth', ensuring all students progress in their understanding of adding two-digit numbers and crossing the ten boundary.