Lesson Plans SET A for Grades 3-4-PDF Lesson 8- Level 3-4- Working Backwards- Teacher file

PDF Lesson 8- Level 3-4- Working Backwards- Teacher file

Pdf Summary

The document outlines Lesson 8 for a Math Kangaroo class aimed at Levels 3-4, focused on teaching students the strategy of "Working Backwards" for problem-solving. The lesson is structured into different segments including Warm-Up, Instruction, Problems, and Wrap-Up, comprising various activities designed to implement the working backwards approach.<br /><br />The lesson starts with a warm-up exercise where students determine their home's location on a coordinate plane by retracing their steps. The instructional segment introduces the strategy of working backwards, which is utilized in situations where a series of actions lead to a known result, allowing one to deduce the initial state by reversing these actions. A flow chart is suggested to help track progress, and it is essential to check the answer by moving forward to ensure consistency.<br /><br />A 4-Step Problem Solving Strategy is emphasized:<br />1. Understand the problem.<br />2. Plan an approach.<br />3. Execute the plan.<br />4. Reflect on the solution for accuracy.<br /><br />The lesson includes several practice problems, such as figuring out the original number of candies after successive halvings, deciphering the start day of eating carrots based on given consumption rates, and deducing initial cash in a drawer based on later amounts after sales. Students also learn to keep track of operations and movements in a sequence and deduce the initial configuration by reversing actions.<br /><br />Students participate in a "Genius Hour" where they create and solve custom problems, enhancing their understanding of the working backwards strategy. They are encouraged to reflect on and share their experiences with this strategy, considering potential challenges and solutions. Optional homework is provided, and interactive activities like the "Guess my number" game are included for extra practice.

Keywords

Math Kangaroo

Levels 3-4

Working Backwards

Problem Solving

Coordinate Plane

Flow Chart

4-Step Strategy

Practice Problems

Genius Hour

Interactive Activities