Addition and subtraction - Pattern spotting - Presentation

In a comprehensive lesson on pattern spotting within the realm of addition and subtraction, students are encouraged to apply their accumulated knowledge to identify patterns and make predictions about numerical relationships. The lesson's activities are structured to prompt students to observe what changes occur to starting numbers after certain calculations are performed. For example, they might notice that a specific number has been added or subtracted. Through a series of thoughtfully designed exercises, students are challenged to discern these patterns, thereby enhancing their understanding of how numbers interact within addition and subtraction operations.

The lesson progresses with more intricate tasks, where students calculate the results of adding or subtracting ones, tens, hundreds, or a combination thereof, to a given number. They then explore whether these operations affect only the targeted place value column or others as well. The activities aim to instill a deeper comprehension of place value and the effects of arithmetic operations on different number columns. By the end of the lesson, students are expected to not only perform calculations with ease but also to recognize and utilize patterns to solve problems more efficiently, questioning the necessity of performing full calculations when a pattern can provide a quicker solution.