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Edvaults

Covering a Wishing Well

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Description

In this assessment, students work through two different methods of finding the area of a cover for a circular wishing well using only rectangular pieces with as little extra material as possible. Throughout the task, students apply methods of approximation to get increasingly closer to the actual area of a circle, at first by using a square grid (Achievement Levels 1-4) and then by using an increasing number of rectangular strips (Achievement Levels 5-8). Students explain the level of accuracy and whether their method makes sense.

Grade Level

Grade 8 (MYP3)

Criteria

Criterion D

Criterion C

Criteria Level

MYP3

Math Concepts

area of compound shapes

area of plane figures

Pythagoras' theorem

MYP Global Context

Scientific and technical innovation

MYP Key Concepts

Form

MYP Mathematics Related Concepts

Space

Report Format

Scaffolded

Solution Type

Closed-ended

Estimated Time

45-60 mins

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