Sorting Shapes Adventure

Overview

In this engaging 60-minute lesson, Year 2 pupils will develop their skills in sorting and classifying 2D and 3D shapes according to their properties. This is lesson 3 of 5 in the Shape Explorers Adventure unit, designed to build on prior shape recognition knowledge and enhance mathematical reasoning through discussion and visual representation tools such as Venn diagrams.

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Curriculum for Wales Alignment

Learning Area: Mathematics and Numeracy

Strand: Shape, position and movement
Progression Step: 2 (Age 6-7, Year 2)

Key Concepts and Skills:

• Recognise, describe, and classify 2D and 3D shapes by their properties (number of sides, edges, vertices, faces, symmetrical lines).
• Use appropriate mathematical vocabulary to explain reasoning.
• Sort and classify objects/shapes according to given criteria and justify choices.

Statements of What Matters:

• Maths is a tool for describing and making sense of the world.
• Achieving fluency in fluent recall and use of mathematical concepts allows problem solving and creative thinking.

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Learning Objectives

By the end of this lesson, pupils will be able to:

1. Identify and describe properties of 2D and 3D shapes confidently (e.g., sides, vertices, faces).
2. Sort and classify shapes into groups using different criteria.
3. Use Venn diagrams to visually represent overlapping properties and explain reasoning verbally or in writing.
4. Work collaboratively in groups to share ideas and mathematical reasoning.

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Curriculum Expectations Addressed

• Use mathematical reasoning, fluency and number skills to solve problems (NM2_1)
• Recognise, describe, and sort shapes by their properties (NM2_8)
• Communicate thinking clearly using mathematical language and symbols (NM2_13)
• Work collaboratively to explore mathematical ideas (NM2_14)

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Resources

• Sets of physical 2D shapes (e.g., triangles, squares, rectangles, circles, hexagons)
• Sets of physical 3D shapes (e.g., cubes, spheres, cones, cylinders)
• Large printed Venn diagrams (laminated sheets or whiteboards)
• Sorting mats labeled with criteria (e.g., Number of sides, vertices)
• Mini whiteboards and markers
• Sticky notes for pupils to write shape names/properties
• Visual aids with terminology (side, vertex, edge, face)
• ‘Shape Explorer’ sticker rewards for motivation

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Lesson Structure

Starter (10 minutes) – Shape Properties Review

• Begin with a quick interactive quiz to recap shape properties previously studied.
• Show shapes one at a time and ask pupils to shout out properties (e.g., "How many sides does this have?" "Is it a 2D or 3D shape?").
• Introduce key vocabulary (side, vertex, edge, face).
• Learning check: Use mini whiteboards to write one property of the shown shape (individual response).

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Main Teaching Activities (40 minutes)

Activity 1: Group Sorting Challenge (20 minutes)

• Pupils split into 6 groups (5 pupils per group).
• Each group receives a mixed set of physical 2D and 3D shapes.
• Teacher states sorting criteria (e.g., “Sort shapes by number of sides” or “Sort shapes that have curved edges vs straight edges”).
• Groups discuss and physically sort the shapes into piles.
• After sorting, groups articulate their reasoning to the class, using mathematical vocabulary.
• Teacher asks probing questions to deepen reasoning: “Why does this shape belong here?” “Can this shape belong to more than one group?”

Differentiation:

• Support groups struggling with properties focus on sorting broad groups (2D vs 3D).
• Higher-achieving groups challenged to sort by more complex combined criteria (e.g., shapes with 4 sides AND 2 right angles).

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Activity 2: Venn Diagram Exploration (20 minutes)

• Introduce Venn diagrams as a tool to classify shapes that share overlapping properties.
• Demonstrate with 2 circles labelled “Shapes with 4 sides” and “Shapes with right angles”.
• Pupils in same groups use laminated Venn diagram sheets and shapes to place shapes in appropriate zones: only first property, only second property, or both.
• Pupils write or place sticky notes describing why shapes go in a particular zone.
• Groups share one interesting discovery about shape properties and overlap with the class.
• Teacher models deepening vocabulary and reasoning, e.g., “A square has 4 sides and right angles, so it goes in the middle overlap.”

Differentiation:

• Visual aids with property definitions available for pupils needing support.
• Challenge learners create a three-circle Venn diagram adding a new property (e.g., has curved edges) for extended reasoning.

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Plenary (10 minutes) – Reflect and Review

• Quick whole-class discussion: “What new things did we discover about shapes today?”
• Pupils use mini whiteboards to write or draw one shape and one property they learned that helped them sort it.
• Share two or three responses aloud, praising the use of mathematical language.
• Teacher awards ‘Shape Explorer’ stickers for teamwork, reasoning, and creativity.
• Set expectations for next lesson: exploring shape symmetry and patterns.

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Assessment for Learning (AfL)

• Ongoing verbal checks during group sorting and explanations ensure understanding of properties.
• Mini whiteboard responses during starter and plenary assess individual grasp of shape vocabulary.
• Group presentations provide insight into pupils’ ability to use mathematical language and reasoning collaboratively.
• Use formative observations to inform support in the next lessons.

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Differentiation Summary

Pupil Group	Support Strategies	Extension Strategies
Struggling learners	Use fewer properties; focus on simple sorting (e.g., 2D vs 3D), provide visual property cards.	Sit with higher achievers during activities to scaffold reasoning.
Average learners	Perform standard sorting using two properties and verbal explanations.	Build confidence by pairing with peers for discussion and reasoning practice.
Higher achievers	Challenge with combined properties and 3-set Venn diagrams.	Create their own sorting criteria and justify their choices in detail.

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Cross-Curricular Links

• Literacy: Use of specific mathematical vocabulary enhances language development.
• Expressive Arts: Use of shape sorting creates opportunities for creative group collaboration and explanations.
• Digital Competency: If devices available, pupils can take photos of their sorting and create a simple presentation (optional extension).

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Teacher Reflection Points

• Were pupils confident in using shape vocabulary during explanations?
• Did all groups participate actively in sorting and reasoning discussions?
• What barriers, if any, did pupils face when using Venn diagrams? How can resources or explanations be adapted next time?
• How can you incorporate pupil feedback/learning into the subsequent lessons on shape properties?

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This lesson plan ensures active, collaborative, and hands-on learning fully aligned with the Curriculum for Wales, supporting pupils in developing core mathematical reasoning skills at Year 2 level.