Page 121 - Mathematics GRADE 9, DE-STREAMED (MTH1W)

• Is your answer reasonable? How do you know? How could you check whether your answer is correct?
• What strategies do you prefer to use when solving equations?
• How is the strategy you used to solve an equation similar to or different from your classmate’s?
• What is the difference between an algebraic equation and an algebraic expression?
Sample Tasks
1. Have students determine the value of the triangle that would make the mobile in the image below stay balanced:
2. Then have them write an equation to represent the situation, and solve it.
3. Have students write an equation that could be represented by the visual shown below. Ask them to
discuss how the visual can help them understand how to solve the equation for x.
4. Have students create an equation for a given solution (e.g., create an equation with a solution of a = 5), trade equations with a classmate to solve, and then compare strategies.
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