Let's find a way to determine how many there are. Given a diagram of trees on a plantation, pupils devise a way to estimate the number of old and new trees. Using their methods, learners create estimates for the number of the two types of trees.

Concepts

estimation, sampling

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Additional Tags

math

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Instructional Ideas

• Ask students to share their estimation methods and compare with other methods
• Have pupils create comments to sample responses based on their performances

Classroom Considerations

• Assumes the class has experience with estimation

Pros

• Includes samples of work and how to score each
• Provides suggested probing questions for different performance levels

Cons

• None

Common Core

MP1 MP6 7.NS.A.3 7.SP.A.2