Testing Material Strength
Students will conduct simple tests to determine which materials are strong, weak, bendable, or rigid using various objects and tools.
Key Questions
- Explain why some materials break easily while others do not.
- Design a test to compare the strength of paper versus cardboard.
- Evaluate which material would be best for building a strong bridge.
Ontario Curriculum Expectations
About This Topic
Stable Structures introduces the basic principles of engineering and design. Students explore what makes a structure stay upright and support weight, focusing on the importance of a wide base and the strength of different shapes. In Ontario, this unit encourages students to look at the world around them, from the CN Tower to local bridges and traditional Indigenous dwellings like the wigwam or longhouse, to see how humans have solved the problem of stability over time.
Students learn through trial and error, discovering that the way materials are joined and the shapes used (like triangles) significantly impact a structure's performance. This topic is inherently hands-on and benefits from a 'maker' mindset. This topic comes alive when students can physically build and test their own designs in a collaborative environment.
Active Learning Ideas
Simulation Game: The Great Base Challenge
Groups are given blocks and challenged to build the tallest tower possible. They then repeat the task but must make the base twice as wide, comparing which tower is harder to knock over.
Gallery Walk: Shape Hunt
Students walk around the school or look at photos of famous structures. They use 'viewfinders' (paper frames) to spot and draw triangles, squares, and arches, then share why they think those shapes were used.
Inquiry Circle: The Paper Bridge
Pairs try to build a bridge between two books using only one sheet of paper. They experiment with folding the paper (corrugation) to see how changing the shape makes the structure more stable and able to hold weight.
Watch Out for These Misconceptions
Common MisconceptionTaller structures are always less stable.
What to Teach Instead
Students often think height is the only factor in falling. By experimenting with weighted bases, students can see that a tall structure with a heavy, wide bottom can be more stable than a short, top-heavy one.
Common MisconceptionHeavy materials always make a structure stronger.
What to Teach Instead
Students may think a heavy block is better than a light one. Through hands-on testing, they can discover that how materials are connected (the joints) is often more important than the weight of the material itself.
Suggested Methodologies
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Frequently Asked Questions
How can active learning help students understand stable structures?
What are some examples of Indigenous structures I can teach?
What are the best materials for Grade 1 building activities?
How do I assess 'stability' in a Grade 1 classroom?
Planning templates for Science
5E Model
The 5E Model structures lessons through five phases (Engage, Explore, Explain, Elaborate, and Evaluate), guiding students from curiosity to deep understanding through inquiry-based learning.
unit plannerThematic Unit
Organize a multi-week unit around a central theme or essential question that cuts across topics, texts, and disciplines, helping students see connections and build deeper understanding.
rubricSingle-Point Rubric
Build a single-point rubric that defines only the "meets standard" level, leaving space for teachers to document what exceeded and what fell short. Simple to create, easy for students to understand.
More in Materials, Objects, and Structures
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Materials and Their Uses
Students will connect the properties of materials to their appropriate uses in everyday objects through gallery walks and concept mapping.
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Building Strong Foundations
Students will explore how the base of a structure affects its stability and ability to support weight through hands-on building challenges.
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Shapes in Structures
Students will identify common geometric shapes used in structures and understand how they contribute to stability through building activities and observation.
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Designing and Testing Structures
Students will design, build, and test simple structures to meet specific criteria, focusing on stability and strength through iterative design challenges.
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