Exploring 3D Properties

Overview

This 30-minute session is lesson 4 of 6 in the unit Exploring Shapes Together. It focuses on developing SEND Year 5-6 students' understanding of 3D shape properties through tactile, visual, and engaging activities. Using building blocks, students will explore faces, edges, and vertices in alignment with the National Curriculum for England's requirements for geometry in Years 5 and 6.

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National Curriculum Links

• Mathematics > Geometry: properties of shapes

  • Identify 3D shapes, including cubes, cuboids, pyramids, cylinders, cones and spheres (Year 5)
  • Recognise 3D shapes in different orientations and describe their properties (faces, edges, vertices) (Year 6)
  • Use the properties of 3D shapes to sort and classify them (Years 5-6)

• SEND Considerations

  • Focus on concrete, multisensory learning experiences
  • Scaffolded questioning and peer support
  • Opportunities for movement and physical manipulation

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Learning Objectives

By the end of the lesson, students will:

1. Identify and describe the properties of common 3D shapes (faces, edges, vertices).
2. Physically construct 3D shapes using building blocks to visualise these properties.
3. Use appropriate mathematical vocabulary confidently when discussing shapes.

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Resources

• Building blocks (e.g., LEGO, wooden cubes, or plastic shape sets)
• Whiteboard and markers
• Shape property chart (images and words for faces, edges, vertices)
• Worksheets with space for drawing and labelling shapes (simplified layout for SEND learners)
• Name tags/stickers with shape vocabulary words (face, edge, vertex)

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Lesson Structure

1. Introduction (5 minutes)

• Engage: Begin with a quick sensory warm-up – pass around different pre-built 3D blocks for students to touch and describe.
• Discuss: Introduce/recap key vocabulary using visual aids: faces, edges, vertices. Write these on the whiteboard with simple definitions (e.g., a face is a flat surface).
• Model: Show one example shape (cube) and count and point to its faces, edges, and vertices aloud.

2. Main Activity: Build and Explore (20 minutes)

Activity 1: Guided Construction (10 minutes)

• Students work in pairs or small groups (2-3) with building blocks.
• Task: Construct a cube first, then try other shapes such as cuboids, pyramids, and cylinders.
• Supporting scaffold: Provide shape cards with pictures and numbers showing properties to support independent work.
• Teacher circulates, prompting with questions:
  • "How many faces does your shape have?"
  • "Can you find the edges?"
  • "Where are the vertices?"

Activity 2: Group Discussion and Visualisation (10 minutes)

• Bring the class together. Each group presents one shape they built.
• Use the whiteboard or shape property chart to classify each shape by its properties.
• Use name tags/stickers on shapes or drawings for group labelling practice.
• Encourage clear use of vocabulary by inviting each student to say one property aloud.

3. Plenary and Assessment (5 minutes)

• Quick quiz game: Show flashcards with images of 3D shapes and ask students to shout or raise a coloured card for the number of faces, edges, or vertices.
• Use thumbs up/down to check understanding of vocabulary.
• Encourage self-assessment: “I can explain what faces, edges and vertices are.” Show thumbs along a scale (thumbs up for yes, middle for unsure, down to indicate they need more help).

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Differentiation

Level	Support	Challenge
Lower Ability	Use blocks with fewer shapes and more hand-on guidance; buddy pairing; simplified vocabulary cards	N/A
Middle Ability	Use all building block shapes; scaffold questions; provide partial worksheets	Ask students to sort shapes by number of faces or edges
Higher Ability	Ask students to compare shapes, e.g., “Which has more edges and why?”	Introduce nets of 3D shapes for visual understanding

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SEND Adaptations

• Use multi-sensory activities: tactile blocks, visual charts, verbal and written cues.
• Visual timers to manage task length and transitions calmly.
• Provide frequent positive reinforcement and clear, simple instructions.
• Allow additional processing time and break tasks into smaller steps.
• Use velocity of speech and clear articulation for auditory learners.

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Teacher Notes

• Encourage language-rich interactions: emphasise correct terminology, support students who struggle to verbalise by modelling phrases.
• Use praise and celebrate attempts to communicate ideas to boost confidence.
• Regularly check understanding with non-verbal feedback methods to gauge comprehension discreetly.
• Keep building blocks organised and accessible to minimise distractions.

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Reflection & Next Steps

After this lesson, plan to reinforce learning by exploring nets of 3D shapes and introducing volume concepts in subsequent lessons (lessons 5 and 6 in this unit). Use this foundation of solid 3D properties understanding to scaffold towards more abstract spatial reasoning skills.