Movement on Surfaces

Overview

In this 60-minute lesson, Year 3 students will explore how different surfaces affect the movement of objects, focusing on friction as a force that can slow movement. This introductory lesson to the unit Magnetic Forces Unleashed lays foundational knowledge about forces, preparing pupils for deeper study of magnets and forces in subsequent lessons.

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National Curriculum Links

Science Programme of Study: Key stage 2

• Pupils should be taught to:
  • Notice that some forces need contact between two objects, but magnetic forces can act at a distance
  • Observe how magnets attract or repel each other and attract some materials and not others
  • Compare how things move on different surfaces
    (Source: National Curriculum for England, Science, Key Stage 2, Years 3 and 4)

Focus for this lesson:

• Compare how objects move on different surfaces
• Recognise that some forces require contact (friction as a contact force slowing movement).

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Learning Objectives

By the end of this lesson, pupils will:

• Describe how different surfaces affect the movement of objects (frame of reference: friction).
• Conduct a simple experiment, making relevant observations and recording results.
• Use scientific vocabulary such as force, friction, surface, movement, and experiment.
• Begin to understand bodies interact through contact forces.

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Resources Needed

• Small toy cars or wooden blocks on wheels (28 items or less, shared in pairs)
• Surface samples: carpet square, tile piece, sandpaper sheet (one set per group)
• Stopwatch or timer
• Measuring tape or ruler
• Recording sheets with tables for observations
• Whiteboard and markers
• Sticky notes or small cards labelled with vocab: force, friction, movement, surface
• Safety scissors (optional, for cutting tape to secure surfaces)

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Lesson Structure

Starter (10 minutes)

Engage with a question

• Gather pupils on carpet area. Show a toy car. Ask: “If I push this toy car across carpet, tile, or sandpaper, do you think it will move the same? Why?”
• Gather ideas and introduce the term friction by explaining: “Friction is a force that happens when two surfaces touch and it slows things down.”
• Write the key term friction and related words (force, surface, movement) on the board; provide brief explanations.

Introduction to Task (5 minutes)

• Explain pupils will test how far the toy car travels on three different surfaces when pushed with the same force.
• Frame this as a scientific experiment: “We will try to keep the pushing force the same, then see how far the car goes on each surface.”
• Show how to set up surfaces side by side on a table or on the floor.

Main Activity (30 minutes)

Group Investigation

• Organise pupils in groups of 4 (7 groups). Each group receives
  • 3 surfaces (carpet, tile, sandpaper)
  • A toy car or block on wheels
  • Measuring tape and stopwatch
  • Recording sheet
• Pupils take turns to:
  1. Push the car with the same force (teacher models this to ensure consistency or use a ramp for consistency).
  2. Measure and record how far the car moves on each surface.
  3. Repeat 2-3 times for average distance.
• Encourage use of scientific vocabulary when discussing results within groups.

Teacher's Role:

• Circulate, ask prompting questions:
  • Which surface made the car stop quickest?
  • Why do you think that surface slowed the car down more?
  • What do you notice about the surfaces?
• Help pupils articulate explanations referencing friction as a resistive force.

Plenary / Reflection (10 minutes)

• Bring whole class back together. Ask groups to share findings and conclusions.
• Create a collective table on whiteboard sliding results and which surface caused the most or least movement.
• Introduce the idea: “Because friction depends on surface texture, next time we will look at magnetic forces that don’t need surfaces to touch to move things.”
• Finish with a fun recap quiz using sticky notes: teacher says a word or description, pupils hold up the correct vocabulary card.

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Assessment & Differentiation

Assessment for learning:

• Observe children during experiment: Can they use vocabulary and explain why movement differs?
• Review recorded data for accuracy and consistency.
• Listen for correct understanding during plenary sharing.

Differentiation:

• Support lower ability pupils by providing sentence starters on recording sheets.
• Challenge higher ability pupils by asking them to predict outcomes before testing and explain reasons using concepts of surface roughness and friction.
• Use peer support and paired discussion for scaffolded learning.

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Safety and Classroom Management

• Ensure surfaces are safely taped down to avoid slipping in experiment.
• Monitor equipment use and sharing for fair access.
• Remind pupils to push gently and not to race cars or throw equipment.

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Extension/Homework Idea

• Pupils to try pushing a toy car at home on different surfaces and draw or write a short report on what changed and why.

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This lesson builds scientific enquiry skills while introducing key ideas about contact forces, seamlessly linking with the unit focus on forces and magnets ahead. Teachers following this plan will scaffold conceptual understanding with practical, engaging investigation aligned tightly to the National Curriculum for Year 3 Science.