Shapes All Around

Unit: Shape Explorers Adventure

Lesson 4 of 5: Shapes in Our World

Year Group: 2
Duration: 45 minutes
Class Size: 25 students

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Learning Objectives

Aligned with the NZ Curriculum Refresh (NZC Refresh) for Mathematics Phase 2 - Year 2:

• Identify, describe and sort familiar 2D and 3D shapes found in varying orientations using the attributes of shapes (e.g., sides, corners, edges, vertices, faces).
• Investigate 2D and 3D shapes in the environment and use everyday and mathematical language (including te reo Māori terms) to explain describing and sorting of shapes.
• Develop spatial reasoning by recognising the relationships between 2D shapes and the 3D shapes they compose.
• Use classification diagrams to categorise shapes based on observable attributes.
• Use and justify the identification of right angles in shapes and objects found in the environment.

These align primarily with the Geometry and Spatial Reasoning learning area statements for Year 2 from Te Mātaiaho and NZC Phase 2 guidance .

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Key Competencies

• Thinking: Exploring shapes deeply in the real-world context, recognising attributes and categorising logically.
• Using language, symbols and texts: Employing shape-related language (e.g., edges, faces, corners, vertices, tapatoru for triangle) with peer sharing and recording findings.
• Relating to others: Collaborating in pairs and small groups during the shape hunt and sharing observations.
• Participating and contributing: Engaging actively in an environment-based investigation.
• Managing self: Following instructions outdoors safely and independently managing use of devices for photos.

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Resources Needed

• Digital cameras or tablets with camera (one per pair or small group)
• Shape Hunt worksheet with columns for photo number, shape name, and attribute checklist (pre-prepared)
• Variety of shape samples (2D cut-outs and 3D objects) for review pre/post hunt
• Chart paper and markers for group sharing session
• Access to a safe classroom and/or school environment for the shape hunt

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Lesson Outline

1. Introduction & Review (10 minutes)

• Begin with a brief interactive discussion revisiting familiar 2D shapes (circle, triangle, square, rectangle) and 3D shapes (cube, sphere, cylinder).
• Show real examples or picture cards; highlight attributes such as number of sides, faces, edges, and corners/vertices.
• Introduce the idea that shapes can be found everywhere around us — in objects, buildings, signs, etc.
• Use correct mathematical language and te reo Māori words for some shapes and attributes (e.g., tapatoru for triangle, tapawhā rite for square) to normalise bicultural language use.
• Clearly explain the day's activity: a Shape Hunt to find real examples in the classroom and school environment, taking photos and then categorising them.

2. Shape Hunt Activity (20 minutes)

• Organise students in pairs or small groups; each group takes one camera/tablet.
• Provide each group with their Shape Hunt worksheet to record:
  • A photo of the shape found.
  • Name of the shape identified.
  • Checkboxes for attributes observed: number of corners, sides (for 2D), or faces, edges, vertices (for 3D).
• Students explore defined areas classroom, corridors, or outdoor space safely.
• Encourage students to observe carefully, take photos, and discuss the shape properties within their group.
• Teacher and assistants circulate, prompting use of mathematical vocabulary and asking questions that encourage reasoning, e.g., "How many edges does that cylinder have?", "Can you show me the corners on that rectangle?"
• Monitor participation and support groups needing help recognising shapes or attributes.

3. Group Sharing & Categorising (10 minutes)

• Back in the classroom, group students pairs/groups together to share 2-3 of their best or most interesting shape photos.
• Use a large visual display (chart paper or interactive board) to categorise these shapes by type: circles, triangles, squares, rectangles, cubes, cylinders, spheres, etc.
• As they share, prompt students to justify their shape naming and attribute classification ("I know this is a cube because it has 6 square faces and 8 corners").
• Reinforce the learning objective by highlighting the attributes school objects and environments share with geometric shapes taught.

4. Worksheet Completion & Reflection (5 minutes)

• Allow time for students to finalise their Shape Hunt worksheet, ticking off correct attributes and writing the shape name.
• Discuss briefly:
  • What new shapes did we find in our environment today?
  • Did you notice any surprises about the shapes around you?
  • Where else do you think we can find these shapes outside of school?

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Assessment

• Formative assessment through observation of student discussion during Shape Hunt and group sharing: Are students correctly identifying and describing shape attributes?
• Review completed Shape Hunt worksheets for accuracy in naming shapes and marking attributes.
• Questioning during group sharing to check conceptual understanding of shape characteristics and connections between 2D and 3D shapes.
• Use anecdotal notes to inform next lesson focused on composing and decomposing shapes.

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Differentiation and Inclusion

• Provide pre-labelled shape flashcards for groups or individuals who need extra support.
• Offer tactile shape models to visually impaired students or those needing sensory inputs.
• Use questioning scaffolding and sentence starters illustrating shape language for EAL (English Additional Language) learners and younger students.
• Challenge advanced learners by asking them to find and describe less common shapes (e.g., hexagons, pyramids).

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Teacher Reflection Prompts

• Did students engage well with the real-world connections of shapes?
• Were the language supports effective in promoting correct use of shape vocabulary?
• How well did students work collaboratively to discover and discuss shapes?
• Did the classification activity consolidate their understanding of attributes clearly?
• What adjustments could be made to increase challenge or support next time?

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This lesson provides a hands-on authentic maths experience, connecting classroom geometry learning with the immediate environment, reinforcing the NZC vision of meaningful, contextualised learning in an inquiry approach that incorporates cultural language awareness and develops key mathematical competencies .