Free Printable 3rd Grade Engineering Worksheets
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Engineering the Elements: Power from Water
Printable Grades 2–5 science worksheet on hydropower and renewable energy with 10 fill-in-the-blank sentences using vocabulary like turbine, generator, and hydropower.
Underwater Observation Robot Design Project
STEAM design project for K–6 students: sketch and label an underwater observation robot prototype for deep-sea research.
Design a Lifeboat or Life Vest
Printable design project for Grades K–6: students create a blueprint for a lifeboat or life vest for a cruise ship with labeled parts.
Skyscrapers
Printable 3rd grade engineering worksheet for a hands-on skyscraper design project including foundation, frame, and stability testing challenges.
Classroom Structure Design Project
Printable 3rd grade engineering worksheet: students redesign or design a classroom item by drawing blueprints, identifying materials, and explaining load and support.
Redesign Structures for Environmental Impact
Printable 3rd grade science worksheet asking students to redesign a human-made structure with less environmental impact and explain their choices.
Bridges: Design and Brainstorm
Printable 3rd grade engineering worksheet guiding students through bridge design with brainstorming, type selection, and labeled sketching activities.
Compression and Tension
Printable 3rd grade science worksheet on compression and tension featuring fill-in-the-blank questions and a hands-on building activity.
Structure Frames: Triangle Strength and Stability
Printable 3rd grade science worksheet on structural engineering: students explore why triangles strengthen frames, bridges, and tall structures.
Foundations in Structures
Printable 3rd grade science worksheet on structural engineering: comparing foundation types, designing structures, and exploring stability factors.
Design Improvement Plan
Printable 3rd grade STEM worksheet guiding students to identify an object and plan how to improve its design—whether it's broken, unsafe, or not useful.
Pulleys and Gears
Printable 3rd grade science worksheet with five reading-comprehension questions about pulleys, gears, and simple machines in everyday life.
Energy Transfers
Printable science worksheet for Grades 3–5 with 13 open-response questions on energy transfer, circuits, renewable energy, and electrical devices.
Structure Design and Testing Challenge
Printable 3rd grade STEM worksheet for a hands-on structure-design project: students build towers, bridges, or tipis and test their stability.
Simple Machines Vocabulary Quiz
Printable Grade 3 science vocabulary quiz on simple machines including wheels and axles, levers, inclined planes, and pulleys.
LEGO Spike Prime Introductory Worksheet
Printable introductory worksheet for 3rd graders using LEGO Spike Prime. Students identify kit components, match sensors to their functions, and reflect on engineering thinking.
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