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Tide-Pool Survey: Parallel Strip Tests

Test how rotations, reflections, and translations affect parallel boundaries used to count tide-pool species.

Grade 8MathInteractive · Printable

Aligned to8.G.A.1.c

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What’s included

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

Details

Format: Interactive · Printable
Grade: Grade 8
Subject: Math
Question types: Fill in the blank, Multiple choice, Circle the answer, Short answer

About this worksheet

What students practice

Students experimentally check that rotations, reflections, and translations preserve parallel lines.
Students compare image-line directions and spacing to evaluate evidence of parallelism.
Students distinguish movement of marked points from movement of the lines containing them.

How to use

Provide graph paper, tracing paper, a ruler, and a pencil. Have students perform each motion on the entire pair of lines before answering, then discuss the final explanation.

Curriculum

Common Core standard covered

8.G.A.1.c

Check by experiment that rotations, reflections, and translations move parallel lines to parallel lines.

Preview

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Name Date

Tide-Pool Survey: Parallel Strip Tests

Experiment with survey boundaries under turns, flips, and slides.

1. Turn a counting strip

A marine biology field-trip team counts species between parallel survey boundaries. These are map lines, not objects placed in the pools. On graph paper, copy the points and draw full lines through AB and CD. Trace both lines and the origin. Rotate the whole tracing 90° counterclockwise about T(1, 1), keeping the graph paper fixed.