Place value within 100 - Partitioning numbers - Presentation

The educational material focuses on the concept of place value within the number range up to 100, specifically teaching children how to partition numbers. Partitioning is a fundamental mathematical skill where a number is broken down into its constituent tens and ones. For instance, the number 65 can be partitioned into 6 tens and 5 ones. This lesson involves a series of activities where children use base 10 blocks or straws to represent numbers visually and then complete sentences to articulate the partitioning of each number. They are encouraged to discuss and explore the concept of partitioning through various tasks, such as completing part-whole models and using place value charts.

As the lesson progresses, students are presented with reasoning challenges that deepen their understanding of place value and partitioning. They are tasked with proving or disproving statements about the composition of numbers, creating numbers that fit specific criteria using base 10, and determining the number of possible combinations given certain conditions. The activities are designed to ensure that children do not confuse tens and ones, and they are encouraged to discuss their strategies and findings. Independent work further reinforces the lesson, with children completing part-whole models, reading and assessing statements about numbers, and exploring the grouping of ones into tens.