Multiplication and Division - Multiply by 100 - Planning

In the Year 4 curriculum, the concept of multiplying by 100 is introduced to enhance students' understanding of multiplication and place value. The lesson utilises various resources such as Base 10 blocks, place value counters, charts, whiteboards, worksheets, and a presentation to support learning. The key vocabulary for this lesson includes multiplication, value, digits, calculations, greater, and increase, with the aim to strengthen the students' mathematical lexicon. The lesson begins with a recap of multiplying by 10 to establish a foundation for the new concept of multiplying by 100, encouraging students to see the connection between the two.

During the class, students use place value charts and counters to visualise and calculate the effect of multiplying by 100 on numbers. They observe that this operation increases the number by a factor of 100, shifting the digits to the left on the place value chart. The lesson is structured to address common misconceptions, such as the erroneous belief that adding two zeros to the end of a number is the correct way to multiply by 100, which is not applicable to decimal numbers. To consolidate their understanding, students are prompted to reflect on what they have learned, the skills they have used, and any challenges they faced. Differentiated activities are provided to cater to varying levels of proficiency, from working towards fluency to achieving greater depth, ensuring all students can progress in their understanding of multiplying by 100 and its practical applications.