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Scale It Down

Math
30 Min
activity

In this hands-on challenge, you'll apply proportional reasoning to design and build a miniature scale model of a piece of furniture from your home. You'll practice careful measurement and problem-solving to create a perfectly proportioned small-scale replica.

The lesson goal is in this spark, your learner will apply proportional reasoning to scale down real-world objects, accurately measure dimensions and choose an appropriate scale and construct a 3D model based on scaled measurements.

What You Need

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Ruler
Pencil
Cardboard
Scissors

Learning Guide

Step-by-step guidance. No preparation required.

  1. 1

    Introduction5 Min

    • Discuss scale models and their purpose.
    • Move on when Student engages with the concept of scale models and understands their purpose.
    Introduction
    Photo by Ramon Karolan on Pexels
  2. 2

    Explore & Plan8 Min

    • Choose a piece of furniture to model.
    • Discuss necessary measurements for the furniture.
    • Consider how to keep proportions correct.
    • Move on when Student has chosen a piece of furniture and articulated a plan for measuring it and understanding a 'scale' concept.
    Explore & Plan
    Photo by Matias Luge on Pexels
  3. 3

    Discussion6 Min

    • Discuss the chosen furniture and initial measurements.
    • Explain what a 'scale factor' is.
    • Determine how to apply a consistent scale.
    • Move on when Student can explain how to choose and apply a consistent scale (e.g., 1:10) to all dimensions.
  4. 4

    Activity9 Min

    • Gather the necessary materials.
    • Measure and mark cardboard using scaled dimensions.
    • Cut out the miniature furniture pieces.
    • Assemble the pieces into a 3D model.
    • Compare the model to the real furniture.
    • Move on when Student has completed the physical activity of building their scale model.
  5. 5

    Summary2 Min

    • Discuss the model and what was learned.
    • Move on when Student shares one key takeaway from the lesson and connects it to real-world applications.

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