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Wave Tank Tests: Compare the Foam

Compare fractions in ocean wave tanks using models, symbols, and reasoning about equal parts and same-size wholes.

Grade 3MathInteractive · Printable

Aligned to3.NF.A.3.d

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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 3
Subject: Math
Question types: Fill in the blank, Multiple choice, Circle the answer, Sorting, Short answer

About this worksheet

What students practice

Students compare fractions with the same denominator by comparing the number of equal parts.
Students compare fractions with the same numerator by reasoning about the size of equal parts.
Students use >, <, and = and explain why comparing amounts requires same-size wholes.

How to use

Introduce the bars as overhead views of wave tanks, with shading showing foam. Have students compare the models before solving without pictures, then discuss why whole sizes matter.

Curriculum

Common Core standard covered

3.NF.A.3.d

Compare two fractions with the same numerator or the same denominator.

Preview

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Name Date

Wave Tank Tests: Compare the Foam

Compare fractions as researchers study ocean waves.

1. Look Across the Tanks

Ocean researchers make waves in tanks. The shaded part of each model shows foam on the water's surface. All tank surfaces are the same size unless a problem says otherwise. Write >, <, or = in each symbol blank.

Compare the fractions covered by foam.

Tank A:
Tank B:
6/8 4/8