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STEM Challenge Build a Drawbridge

Grade Levels
3rd - 6th
Formats Included
  • Zip
32 pages
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  1. This is a set of three STEM Challenges that all have something to do with Back-to-School Supplies! Specifically pencils! It’s the Pencil Series! This series is perfect for the beginning of the school year when you have all those brand new pencils, but it can be used any time of year!Please note: Thi
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Let's try a drawbridge! Students are building a drawbridge model that opens and closes. We used new pencils as a building material and we have tried dowel sticks. The resource includes details about both!

This challenge is available in money-saving bundles!

What is the challenge?

In this challenge, students will design and build a drawbridge that follows some specific constraints. Kids will be creative as they decide how to use the string and pencils, but they must also be diligent in making a bridge that is not flimsy. The final structure must cross over a one-foot gap and open and close in some way. You can opt for the final bridge to be tested for its ability to hold weight, if you like. There are several choices for you to make in the use of this challenge. Lab sheets and constraints posters for the options are all provided.

What is your prep?

You will need supplies in addition to this package. This includes new pencils, masking tape, rubber bands, pipe cleaners, string, cardboard pieces, straws, copy paper, pennies for weights- optional, small bowls- optional, OR instead of pencils- Craft sticks and Straws OR instead of pencils Craft sticks and Dowel sticks

The package specifically includes

  • table of contents
  • teacher background
  • materials and preparation page
  • 4 pages of teacher directions
  • 4 pages of photographs
  • two extra Hints page
  • three versions of constraints posters with matching lab sheets
  • one sample answer lab sheet
  • a scoring rubric
  • an editable forms file
  • Terms of Use page
  • UPDATE: Now included are two alternative materials lists, tips, and photos for building the drawbridge without pencils! Check the preview to see which forms are editable!

This challenge will need 1 class session (1hour) to complete.

You may also like other challenges that use pencils as a building material!

Or grab the Pencil Series Bundle and save money!

Save even more with the Seasonal Bundle:


You might also like these STEM Challenges:


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Total Pages
32 pages
Answer Key
Teaching Duration
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