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Printable 1st grade STEM challenge with instructions and materials list for building a boat from household supplies.
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Build-A-Boat STEM Challenge

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This printable hands-on STEM challenge asks 1st graders working in pairs to design and build a boat that floats across water and keeps a small toy safe. Using materials like construction paper, foil, Styrofoam cups, and popsicle sticks, students test which materials and shapes work best for buoyancy. Includes brainstorming space and reflection questions on material properties. Ideal for in-class group work, STEM stations, or engineering-unit activities.

Subject:
Science
Topic:
Engineering
Grade Level:
1st Grade
Updated September 2025

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