Addition and subtraction within 10 - Part whole model - Presentation

In a structured mathematics lesson, students are introduced to the part-whole model, a foundational concept for understanding addition and subtraction within 10. The part-whole model is a visual representation that helps students to see how numbers can be broken down into parts and then combined to form a whole. The lesson begins with a discussion about what constitutes a 'whole' and what are considered 'parts'. This sets the stage for exploring how different numbers can be created from the sum of their parts. Students are encouraged to think critically about the composition of numbers, using the part-whole model as a tool for visualising and understanding the relationship between the parts and the whole.

As the lesson progresses, students engage in various activities that involve completing part-whole models by drawing counters and writing numerals, allowing them to practice partitioning numbers in different ways. For instance, they might see that the number 6 can be made from the parts 4 and 2, or that the number 5 can be composed of 4 and 1. In addition to these exercises, students are presented with practical tasks, such as sorting pieces of fruit or animals into different groups and representing these groups using the part-whole model. Through these activities, students learn to recognise that the parts can be rearranged, that zero can be considered a part, and that the size of the parts changes as more partitions are made. The lesson aims to build fluency in addition and subtraction while fostering reasoning skills in young learners.