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Aquarium Feeding Zones

Practice circle area and circumference through aquarium care, feeding-zone plans, and an informal explanation connecting the formulas.

Grade 7MathInteractive · Printable

Aligned to7.G.B.4

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What’s included

Single worksheet
Auto-graded online
1 Common Core standard
Printable answer key
14 questions
Classroom-ready

Details

Format: Interactive · Printable
Grade: Grade 7
Subject: Math
Question types: Fill in the blank, Multiple choice, Circle the answer, Sorting, Short answer

About this worksheet

What students practice

Students use circle area and circumference formulas to solve aquarium-care problems.
Students distinguish boundary measurements from surface measurements and calculate with both.
Students informally explain why a circle's area equals half its circumference times its radius.

How to use

Use after introducing circle formulas. Have students show calculations on separate paper and discuss the final explanation with a partner.

Curriculum

Common Core standard covered

7.G.B.4

Know and use the formulas for the area and circumference of a circle, and informally explain how they are related.

Preview

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Aquarium Feeding Zones

Use circle measurements to plan tank care and feeding.

Tank Measurements

Use π = 3.14 unless a question asks for an exact answer in terms of π. Do not round intermediate calculations. All tank and feeding-zone measurements describe circles viewed from above.

Decide which measurement each aquarium-care task needs.

Find the length of a seal that goes once around a tank's circular opening.Find how much mesh covers a tank's entire circular opening.Find the water surface covered by a circular feeding zone.Find the length of tubing that outlines a circular feeding zone.