Multiplication and Division - Multiply 2-digits by 1-digit – No exchanging - Planning

In a structured mathematics lesson for Year 4 students, the objective is to multiply two-digit numbers by one-digit numbers without the need for exchanging. This session falls within the second week of the Spring term's Multiplication & Division unit. The National Curriculum objectives targeted include recalling multiplication and division facts for times tables up to 12x12, using place value and known facts for mental arithmetic, and understanding factor pairs and the commutative property in calculations. The key concepts for this lesson revolve around multiplication, division, and partitioning, with a focus on tens and ones, as well as the concept of repeated addition. Students are encouraged to utilise resources such as place value charts, counters, and base 10 blocks to aid their understanding.

The lesson starts with a recap of using repeated addition and concrete manipulatives to represent multiplication problems. The students are then introduced to word problems and use base 10 blocks to visualise the multiplication process, reinforcing the concept that multiplication is essentially repeated addition. For example, multiplying 21 by 3 is shown as adding 21 three times, resulting in a total of 63. Subsequent activities involve place value counters to further illustrate the multiplication process, and formal written methods are presented alongside pictorial representations to help students make connections between different approaches to multiplication. Differentiated worksheets provide independent practice, and a plenary session encourages reflection on the skills learned, such as partitioning numbers, and reinforces the importance of understanding the concrete representations that underpin formal written calculations.