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Model Rocket Launch Day: Rate Checks worksheet preview

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Model Rocket Launch Day: Rate Checks

Find constants of proportionality in launch-day tables, graphs, equations, scale diagrams, and descriptions.

Grade 7MathInteractive · Printable

Aligned to7.RP.A.2.b

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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 identify the constant of proportionality in tables, graphs, equations, diagrams, and descriptions.
  • Students interpret constants with units and compare proportional launch-day models.
  • Students distinguish a constant of proportionality from a total or an increase.

How to use

Use after introducing y = kx. Have students label the units of each constant, then discuss the final comparison as a class.

Curriculum

Common Core standard covered

7.RP.A.2.b

Find the constant of proportionality in tables, graphs, equations, diagrams, and word descriptions.

Preview

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Name Date

Model Rocket Launch Day: Rate Checks

Find and interpret constants of proportionality across representations.

Launch-Day Preparation

For each proportional relationship, use y = kx. Pay attention to which quantity is x and which is y.

1.
Students weigh identical fins for their display rockets. Which statement identifies the constant of proportionality?
Fin Mass
Fins, xMass, y (g)
516
1032
1548
  • A. The constant is 0.3125 gram per fin.
  • B. The constant is 3.2 grams per fin.
  • C. The constant is 11 grams per fin.
  • D. The constant is 16 grams per fin.
2.
The launch team buys identical identification labels with no additional fee. Find k without filling in the question-mark cell.
Identification Labels
Labels, xCost, y ($)
124.2
20?
3010.5

k =   dollar per label

3.
A packing model uses y/4 = 1.5x, where x is the number of rocket kits and y is the number of protective pads. What is k in y = kx?
  • A. k = 6 pads per kit
  • B. k = 4 pads per kit
  • C. k = 0.375 pad per kit
  • D. k = 1.5 pads per kit

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