Birthday Gift

Act 1:

Will the gift fit in the bag?

Act 2:

What information would be useful to figure this out?



Students can come to conclusions using different methods. Traditional area and volume formulas could be used, or they can use reasoning based on the diameter of the circle and lengths of the rectangle sides. As usual, the focus will be on their thought process instead of simply their answer.

Act 3:


What would happen if the bag’s height was 7 inches?

What would happen if the drum’s radius was 6 inches?

Lesson Page:

Improvement sugestions? Feel free to comment.

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