Science · Year 7

Active learning ideas

Introduction to Forces: Pushes and Pulls

Active learning works for forces because students need to feel the difference between pushes and pulls to build lasting mental models. When Year 7 students tug ropes, slide objects, and drop magnets, they connect abstract ideas to their own physical experiences, making concepts like friction and gravity memorable and meaningful.

• National Curriculum Attainment Targets
• KS3: Science - Forces

• 20–45 min
• Pairs → Whole Class
• 4 activities

Activity 01

• Inquiry Circle
• 30 min · Whole Class

Whole Class Demo: Tug-of-War Balances

Split class into two teams holding a rope attached to newtonmeters. Pull gently until forces balance (rope still), then unbalance to observe motion. Record readings on shared chart. Follow with class vote on predictions for next pulls.

Explain what causes an object to start or stop moving.

Facilitation Tip

During Tug-of-War Balances, have students stand on marked spots to emphasize that equal and opposite pulls create balance, visible in the stillness of the rope.

What to look for

Provide students with a diagram showing a book resting on a table. Ask them to: 1. List all the forces acting on the book. 2. Label each force as contact or non-contact. 3. State whether the forces are balanced or unbalanced.

• Analyze
• Evaluate
• Create
• Self-Management
• Self-Awareness

Activity 02

• Inquiry Circle
• 45 min · Small Groups

Small Groups: Contact Force Stations

Set up stations with sandpaper ramps for friction pushes, rubber bands for tension pulls, and toy cars for applied force. Groups measure with newtonmeters, note effects on motion, and rotate stations. Share one key observation per group.

Differentiate between contact and non-contact forces.

Facilitation Tip

At Contact Force Stations, circulate with a timer to keep groups rotating every 6 minutes, ensuring all students interact with friction, tension, and normal forces.

What to look for

Ask students to hold a spring balance and attach a known mass (e.g., 100g). Instruct them to read the force in Newtons. Then, ask: 'If you pull gently upwards on the spring balance, what happens to the reading? Why?'

• Analyze
• Evaluate
• Create
• Self-Management
• Self-Awareness

Activity 03

• Inquiry Circle
• 35 min · Pairs

Pairs: Non-Contact Force Drops

Partners drop objects like feathers and balls from heights to feel gravity's pull, then use magnets to attract paperclips across tables. Measure pull strength at distances with balances. Compare data in pair discussions.

Analyze how balanced and unbalanced forces differ in their effects.

Facilitation Tip

For Non-Contact Force Drops, assign roles so one student drops the magnet while another times the fall, making the invisible force of magnetism concrete through shared observation.

What to look for

Present a scenario: 'A tug-of-war team is pulling with a combined force of 500N, and the opposing team is pulling with 450N. Describe what happens to the rope and explain why, referencing balanced and unbalanced forces.'

• Analyze
• Evaluate
• Create
• Self-Management
• Self-Awareness

Activity 04

• Inquiry Circle
• 20 min · Individual

Individual: Force Diary Challenge

Students list five daily pushes or pulls, estimate force in newtons, then test one with a spring balance like opening a door. Sketch before-and-after motion. Share top example in plenary.

Explain what causes an object to start or stop moving.

Facilitation Tip

In the Force Diary Challenge, provide sentence starters like 'Today I pushed the trolley with a force of...' to guide students in accurately recording forces and outcomes.

What to look for

Provide students with a diagram showing a book resting on a table. Ask them to: 1. List all the forces acting on the book. 2. Label each force as contact or non-contact. 3. State whether the forces are balanced or unbalanced.

• Analyze
• Evaluate
• Create
• Self-Management
• Self-Awareness

A few notes on teaching this unit

Teach forces by starting with what students already do—push, pull, throw, and drop—then layer scientific language and measurement. Avoid abstract explanations alone; instead, let students test predictions with hands-on tools. Research shows that combining visual demonstrations with collaborative data collection helps students grasp the invisible nature of forces and reduces misconceptions about balanced forces and net effects.

Successful learning shows when students can identify pushes and pulls in everyday actions, measure forces in newtons, and explain how balanced and unbalanced forces affect motion. By the end of the lessons, they should confidently use tools like spring balances and describe forces with precise vocabulary.

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Watch Out for These Misconceptions

• During Small Groups: Contact Force Stations, watch for students who assume all pushes are stronger than pulls.

  Have students compare the sensation of pushing a heavy box across the floor with pulling a backpack on a smooth surface. Ask them to describe the effort in each action and record which felt stronger, then discuss why direction matters in force interactions.

• During Whole Class Demo: Tug-of-War Balances, watch for students who think balanced forces mean no forces are acting.

  After the tug-of-war, have students hold the rope still in the middle while you ask: 'Is the rope moving? What does that tell us about the forces?' Then, have them place a book on a spring balance to see opposing forces in action.

• During Small Groups: Contact Force Stations, watch for students who believe a stronger push always causes faster motion.

  Provide identical trolleys and ask groups to push with varying forces while measuring acceleration with a stopwatch. Have students plot force vs. speed on graph paper and discuss why mass also matters in the relationship.

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Methods used in this brief

• Inquiry Circle