Friction, Drag and Resultant Forces — Interactive Lesson (Ages 11–14)

Why does a bicycle slow down when you stop pedalling, and how does a parachute work? This 18-slide interactive lesson on resultant forces takes pupils from first ideas to exam-style explanations, with 9 self-marking activities and nothing to prepare beforehand.

Teaching Friction, Drag and Resultant Forces in KS3 Science

Pupils sort examples of useful and unhelpful friction, explain air and water resistance and why streamlining helps. They calculate the resultant of forces acting in the same and opposite directions, describe what balanced and unbalanced forces do to motion, and explain each stage of a skydiver's fall, including terminal velocity.

What Pupils Will Learn

• Describe friction and when it is useful or a problem.
• Explain air resistance and water resistance (drag).
• Calculate the resultant force on an object.
• Describe what balanced and unbalanced forces do.
• Explain how a parachute works.

What’s Included

• 18-slide interactive lesson on resultant forces
• 9 self-marking activities: multiple-choice questions, true-or-false checks, sorting tasks, drag-and-drop categorising and fill-in-the-gap questions
• Step-by-step teaching cards that reveal one point at a time
• A written explanation task with a model answer for self-assessment

Why Teachers Love It

• No prep — open it on an interactive whiteboard, laptop or tablet
• Instant feedback explains every answer, right or wrong
• Everyday examples make physics feel real
• Works for whole-class teaching, independent study or revision

Curriculum Alignment

Supports the UK Key Stage 3 Science curriculum and Nigerian Junior Secondary Basic Science (JSS1), building the foundations pupils need for GCSE, WAEC and NECO.

Love this? You’ll love…

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FAQ

What year groups is this for? Year 7 (ages 11–14), and JSS1 in Nigeria.

Is it self-marking? Yes — all 9 activities give instant feedback.

Do pupils need to log in? No. The lesson runs in any modern web browser.

Can I use it for revision? Yes. Pupils can replay it as often as they like, and the results screen shows which questions to review before a test.