Addition and subtraction - Bonds to 100 tens and ones - Presentation

In a comprehensive lesson aimed at strengthening mathematical foundations, students are encouraged to extend their knowledge of number bonds to 10 and 20, applying these skills to achieve an understanding of bonds to 100. The lesson utilises a variety of engaging activities, beginning with a discussion on number bonds and prompting students to provide five examples of number bonds to 10, while also relating each to a corresponding fact. This sets the stage for exploring bonds to 100 with tens and ones, using a hundred square as a visual aid to facilitate learning.

The activities are designed to be interactive and thought-provoking. One such activity involves identifying how many tens are in 100 and calculating the unshaded squares on a hundred square when a certain number are shaded, reinforcing subtraction skills within the context of 100. Another activity challenges students to use base 10 blocks to make 100, providing a hands-on approach to understanding the composition of the number 100 in terms of tens and ones. The lesson progresses to more complex tasks that require completing number sentences and patterns, offering students the opportunity to apply their knowledge in various scenarios. Reasoning exercises prompt critical thinking, such as verifying a peer's work or identifying patterns in number bonds to 100, ensuring a deeper comprehension of the concept.