Science · Year 3

Active learning ideas

Investigating Friction

Active learning works for investigating friction because students need to feel and see how forces behave in real time. When Year 3 students manipulate surfaces and measure distances, they build accurate mental models of how friction behaves in familiar contexts like ramps and playgrounds.

• National Curriculum Attainment Targets
• KS2: Science - Forces and Magnets
• KS2: Science - Working Scientifically

• 30–50 min
• Pairs → Whole Class
• 4 activities

Activity 01

• Placemat Activity
• 45 min · Small Groups

Ramp Races: Surface Tests

Provide ramps and toy cars. Groups attach different surfaces like felt, foil, or bark to ramps, release cars from the same height, and measure distances with rulers. They record results in tables and predict outcomes for new surfaces before testing.

Design an experiment to determine which surface provides the most grip.

Facilitation Tip

During Ramp Races, remind students to keep the ramp height and starting point identical for each surface to maintain a fair test.

What to look for

Give each student a small card. Ask them to draw a simple diagram showing their experiment and label the surface that created the most friction. Then, ask them to write one sentence explaining why that surface provided more grip.

• Understand
• Analyze
• Evaluate
• Self-Awareness
• Relationship Skills

Activity 02

• Stations Rotation
• 50 min · Small Groups

Stations Rotation: Friction Stations

Set up stations with pull toys on wood, carpet, and tiles; drag blocks with elastic bands; push pencils on paper types; and feel surface textures. Groups rotate every 10 minutes, noting qualitative and quantitative observations in notebooks.

Analyze how changing the surface affects the distance an object travels.

Facilitation Tip

For Station Rotation, assign small groups so each student has a role, such as surface tester, measurer, or recorder.

What to look for

After conducting experiments, ask students: 'Imagine you are designing a playground slide. Would you want a surface with high friction or low friction? Explain your choice using evidence from your investigations.'

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

Activity 03

• Placemat Activity
• 30 min · Pairs

Grip Challenge: Pairs Pull

Pairs tie string to objects and pull them across varied surfaces using a force meter or marked line for distance. They swap objects, compare forces needed, and discuss variables like weight in pairs before sharing class findings.

Justify the importance of friction in everyday activities like walking or cycling.

Facilitation Tip

In the Grip Challenge, circulate and ask pairs to predict which surface will require more force before they start pulling.

What to look for

As students are setting up their experiments, ask them: 'What is one thing you need to keep the same to make this a fair test? How will you measure the distance the object travels?'

• Understand
• Analyze
• Evaluate
• Self-Awareness
• Relationship Skills

Activity 04

• Placemat Activity
• 35 min · Whole Class

Everyday Friction Hunt: Whole Class

Students list and test household items for grip, such as socks on floors or erasers on desks. Class compiles a friction scale from results, then debates safest shoe designs for playground use.

Design an experiment to determine which surface provides the most grip.

Facilitation Tip

During the Everyday Friction Hunt, provide clipboards with a simple chart so students can record observations efficiently.

What to look for

Give each student a small card. Ask them to draw a simple diagram showing their experiment and label the surface that created the most friction. Then, ask them to write one sentence explaining why that surface provided more grip.

• Understand
• Analyze
• Evaluate
• Self-Awareness
• Relationship Skills

A few notes on teaching this unit

Teach friction by starting with what students already feel every day: walking without slipping, holding a pencil, or sliding on a playground. Avoid defining friction too abstractly early on. Instead, let students observe it through structured experiments before introducing formal vocabulary like 'grip' or 'resistance'. Research shows concrete experiences anchor later conceptual understanding, so emphasize the link between their tactile experiences and the science terms.

Successful learning looks like students planning fair tests, recording measurements clearly, and using evidence to explain why some surfaces slow objects more than others. They should describe friction’s role in everyday life with concrete examples from their experiments.

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Watch Out for These Misconceptions

• During Ramp Races, watch for students who assume the smoothest surface will always allow the car to travel farthest.

  Use the ramp tests to redirect their thinking: place a piece of carpet and polished wood side by side, roll identical toy cars down, and ask students to compare the stopping points. Guide them to notice that polished wood sometimes grips more than expected due to its material.

• During Station Rotation, listen for students who say friction only slows objects down and never helps.

  Direct students to the sandpaper and rubber mat stations. Have them press their hands firmly on these surfaces and try to slide them. Ask them to describe the difference in grip compared to plastic or glass, then discuss how friction enables walking or holding objects safely.

• During Grip Challenge, observe students who describe friction as 'pulling backward' instead of opposing motion.

  Use the string and spring scales to measure force. Ask one student to pull slowly while the other feels the resistance. Then, have them pull quickly and discuss how the force changes direction relative to their motion, reinforcing that friction reacts to movement.

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Methods used in this brief

• Placemat Activity
• Stations Rotation