Multiplication and division - Multiply by 4 - Presentation

In today's mathematics lesson focused on multiplication, students will learn to multiply by 4. The concept is introduced by reinforcing their existing knowledge of multiplying by 2, and then extending this to understand that multiplying by 4 can be achieved by doubling a number and then doubling it once more. The question posed to the class, "What does double mean?" encourages students to discuss and consolidate their understanding of this foundational concept. To support their learning, students are prompted to count in 4s, which aids in visualising the multiplication process and understanding the sequential addition that multiplication by 4 represents.

The lesson includes a series of interactive activities designed to deepen students' comprehension and fluency in multiplying by 4. Activity 1 encourages the use of concrete apparatus to solve multiplication problems such as 8 x 4, 4 x 4, and 4 x 6, linking visual representations to mathematical operations. In Activity 2, students are asked to calculate the total number of dots by identifying the number of groups of 4, fostering their ability to recognise and apply the concept of multiplication in different contexts. Activity 3 then applies the skill to real-life scenarios, such as determining the total number of pens in multiple packs, where students are prompted to write number sentences to represent their calculations. Throughout the lesson, discussions and reasoning tasks challenge students to articulate their understanding, represent problems pictorially, and solve problems using practical resources, ensuring a comprehensive grasp of multiplying by 4.