Lesson Plans SET A for Grades 1-2-PDF Lesson 3 - Level 1-2- Work Backwards

PDF Lesson 3 - Level 1-2- Work Backwards - Presentation

Pdf Summary

The given document outlines Lesson 3: "Work Backwards" from a Math Kangaroo Class for levels 1-2. The central theme of the lesson is solving problems by starting from the final answer and working backwards to determine the beginning or initial conditions. This reverse problem-solving method is particularly useful in situations where the outcome is known, but the start point isn’t clear.<br /><br />The lesson introduces the concept with a warm-up problem, where students must determine who caught a fish by tracing the steps backward. This serves as a practical application to understand the overall concept of starting with the end result to find the beginning. Throughout the lesson, various Math Kangaroo problems are presented to practice this technique. These problems are a mix of logic and basic arithmetic that can be approached by reversing operations such as addition and subtraction.<br /><br />Noteworthy problems include determining which child reaches a rabbit by following arrows and strategizing to block gates to prevent a mouse from reaching cheese. Other exercises involve numerical challenges requiring students to reverse calculate figures to reach given outcomes, like ensuring an operation leads to a sum of 36 or backtracking days of the week. <br /><br />The lesson concludes by emphasizing the importance of reversing steps and using appropriate operations to trace back to the problem's origin. To reinforce learning, a bonus question about exchanging sweets and a prompt to create a personalized problem involving sticker exchanges are provided, urging students to design their own scenarios and solve them by working backwards.

Keywords

work backwards

Math Kangaroo

problem-solving

reverse operations

logic puzzles

arithmetic

initial conditions

tracing steps

numerical challenges

personalized scenarios