Multiplication and division - Divide 100 into 2, 4, 5 and 10 equal parts activity - Presentation

In Lesson 10 of a mathematics series on multiplication and division, students are tasked with dividing the number 100 into 2, 4, 5, and 10 equal parts. The lesson encourages students to explore the concept of equal parts and how to represent the number 100 in various ways. The initial activity prompts students to use their understanding of division to split 100 into two equal parts, resulting in 50 when 100 is divided by 2. They continue this pattern of division, calculating that 100 divided by 4 equals 25, by 5 equals 20, and by 10 equals 10. Through these exercises, students practice fluency and reasoning in division, and they also observe patterns and relationships between the numbers.

Further into the lesson, students are introduced to different methods of dividing 100, such as using a place value grid, partitioning, and visualising with 100 squares. For example, Rosie employs a place value grid to divide 100 into tens and ones, while Leanna uses partitioning to split 100 into smaller, more manageable parts. Esin opts for a visual approach with 100 squares, allowing students to see the division physically. Each method provides a unique way to understand division, and students are encouraged to use these techniques to solve problems independently. They are invited to notice patterns, such as the doubling and halving relationship, and to apply this knowledge to solve division calculations efficiently. The lesson aims to deepen students' understanding of division and to equip them with a variety of strategies to tackle division problems involving the number 100.