Load bearing structures are the focus of this Grade 3 Science resource, helping students explore how engineers design structures that support forces without collapsing. Students examine structural stability and identify design features that can make structures stronger and more stable, including triangles and wider bases.

Explore Stability Through Evidence

Students learn how engineers use testing results to improve structural designs. The resource asks students to consider how structures respond to loads, compare the results of testing two designs, and use evidence to explain why one structure may be more stable or better able to support forces.

Key concepts include stability, load bearing structures, forces, structural design, triangles, wider bases, testing, and design improvement. Students also practice using evidence from a load test to compare designs and explain how testing can guide changes for stronger structures.

Ways Students Demonstrate Understanding

The worksheet combines multiple-choice questions, true/false statements, short-answer responses, a dialogue, matching, a cloze passage, a labeled diagram, a reading passage, and an essay. These formats give students opportunities to identify structural features, explain engineering ideas, interpret testing results, compare designs, and support conclusions with evidence.

Teacher Support

• Student worksheet with notes lines at the bottom.
• Separate Teacher Guide with learning objectives and teaching tips.
• Discussion questions to support classroom conversations.
• Common mistakes to help teachers address potential misunderstandings.

Classroom Use

Use this Grade 3 engineering and technology worksheet for guided teaching, independent practice, review, or classroom assessment. It provides a structured way to connect engineering concepts with evidence from load testing while giving students practice explaining why particular structural features can increase stability.

By focusing on how engineers help structures withstand forces, this resource gives students a clear foundation for thinking about structural stability, load testing, evidence, and design improvement.