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3D Print Club: Edits That Undo worksheet preview

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3D Print Club: Edits That Undo

Students interpret opposite quantities and zero net change through 3D-printing design edits, part measurements, and club print plans.

Grade 7MathInteractive · Printable

Aligned to7.NS.A.1.a

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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 7
Subject
Math
Question types
Fill in the blank, Multiple choice, Matching, Circle the answer, Short answer

About this worksheet

What students practice

  • Students identify equal, opposite changes that combine to make zero.
  • Students describe what zero net change means in a 3D-printing situation.
  • Students determine the change needed to undo a design adjustment.

How to use

Use after introducing signed quantities. Have students identify the quantity and units before deciding whether changes cancel.

Curriculum

Common Core standard covered

7.NS.A.1.a

Describe situations where opposite quantities combine to make 0, like gaining and then losing the same amount.

Preview

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Name Date

3D Print Club: Edits That Undo

Interpret opposite changes in parts, models, and print plans.

Read the Design History

Treat each change as an addition to the current value. Opposite changes to the same quantity have equal sizes and opposite signs.

1.
The club rotates a model 35° clockwise (+35°), then 35° counterclockwise (−35°). What does the sum of 0° describe?
  • A. The model finishes at the same orientation where it started.
  • B. The model finishes 70° clockwise from its starting orientation.
  • C. The model has turned 0° in total along its path.
  • D. The model finishes 35° counterclockwise from its starting orientation.
2.
Match each design edit to the edit that cancels it exactly. Each match changes the same feature.
  1. Increase a peg's length by 2.5 mm.
  2. Decrease a lid's width by 4 mm.
  3. Move a label 7 mm left.
  4. Rotate a dial 60° clockwise.
  1. A. Move the label 7 mm right.
  2. B. Rotate the dial 60° counterclockwise.
  3. C. Decrease the peg's length by 2.5 mm.
  4. D. Increase the lid's width by 4 mm.
3.
Imani moves a model −12 mm along the horizontal axis. A second move restores its original position on that axis.

Write the signed second change:   mm

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