Mathematics · Grade 1

Active learning ideas

Identifying 3D Shapes

Active learning is key for understanding 3D shapes because it moves beyond memorization to tangible experience. When students physically interact with shapes, compare them, and find them in their environment, they build a much deeper, intuitive grasp of spatial concepts.

• Ontario Curriculum Expectations
• 1.G.A.1

• 25–45 min
• Pairs → Whole Class
• 3 activities

Activity 01

• Stations Rotation
• 30 min · Small Groups

Shape Hunt: Real-World Exploration

Take students on a 'shape hunt' around the classroom or school. Provide a checklist with pictures of common 3D shapes. Students identify and record where they find each shape, discussing its characteristics with a partner.

Explain how 3D solids are different from 2D flat shapes in the real world.

Facilitation Tip

During the Stations Rotation, ensure students are actively engaging with the materials at each station and discussing their observations with their group.

• Remember
• Understand
• Apply
• Analyze
• Self-Management
• Relationship Skills

Activity 02

• Stations Rotation
• 45 min · Small Groups

Build a Shape City

Provide various building materials like blocks, cardboard boxes, and playdough. Students work in small groups to construct a 'city' using different 3D shapes, identifying the shapes they use as they build.

Compare a cylinder and a cone; what are their key differences?

Facilitation Tip

In the Museum Exhibit activity, guide groups to think critically about how to best display their chosen shape and what key information a 'docent' would need to share.

• Remember
• Understand
• Apply
• Analyze
• Self-Management
• Relationship Skills

Activity 03

• Stations Rotation
• 25 min · Individual

Shape Sorting Challenge

Present a collection of everyday objects (e.g., dice, party hats, cans, balls, boxes). Students work individually or in pairs to sort these objects into categories based on their 3D shape, justifying their choices.

Construct a model of a cube using playdough or blocks.

Facilitation Tip

For the Shape Hunt, encourage students to look for shapes in unexpected places and to justify why they classified an object as a certain shape.

• Remember
• Understand
• Apply
• Analyze
• Self-Management
• Relationship Skills

A few notes on teaching this unit

Teachers find that hands-on exploration is far more effective than simply showing pictures of 3D shapes. By providing varied materials and opportunities for students to build and manipulate shapes, we help them develop an understanding of depth and form, moving beyond flat, 2D representations.

Successful learners will be able to confidently name common 3D shapes and identify their defining features, like faces, edges, and vertices. They will also be able to locate these shapes in real-world objects and articulate the differences between shapes like spheres and cylinders.

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Watch Out for These Misconceptions

• During the Shape Sorting Challenge, watch for students who place objects like party hats or tin cans into the sphere category.

  Redirect by asking students to feel the object's base. Prompt them to describe if it's flat or round and how that differs from a ball (sphere).

• During the Build a Shape City activity, watch for students who seem to be drawing or describing flat shapes rather than constructing solid forms.

  Guide students to use blocks or playdough to add 'depth' to their creations, showing them how to build upwards and outwards, not just trace a flat outline.

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Methods used in this brief

• Stations Rotation