Place value - Find 1, 10, 100 more or less than a given number - Planning

In the third week of the Autumn term, Year 4 students delve into the concept of place value with a focus on finding 1, 10, or 100 more or less than a given number. This lesson is a step forward from their previous learning in Years 2 and 3, where they initially explored the concept of finding one more or less. The National Curriculum objectives covered include counting in multiples, recognising the place value of each digit in a four-digit number, ordering and comparing numbers, rounding, and solving practical problems involving these skills. Key vocabulary such as 'place value', 'digit', 'compare', 'round up', 'round down', and 'multiples' are highlighted to enhance the students' understanding of the subject matter.

The lesson begins with practical activities using Base 10 or place value counters to help students visualise and understand the value of each digit in a number. For instance, they may represent a three-digit number like 390 and then adjust it to find 10 more or 10 less, observing the changes and constants in the number's structure. This hands-on approach is reinforced with discussions, partner talk, and true/false questions to encourage reasoning and explanation of their thinking. Students are then presented with activities and worksheets to develop fluency in adding and subtracting 10 and 100, while also being encouraged to represent their answers in various ways. The lesson aims to deepen their understanding through verbal reasoning and problem-solving, with particular attention given to the changes that occur when a number crosses the hundred boundary. Misconceptions are addressed, such as the challenges that arise when adding or subtracting 10 in this context. The lesson concludes with a reflection, where students assess the skills they've used and the knowledge they've gained, ensuring they remember the key concepts taught.