Substitution into Formulae — Interactive Lesson (Ages 14–16)

☆☆☆☆☆ Add your review • Year 10–11 • 🎓 Interactive Lesson & Activities

A 31-slide interactive GCSE lesson on substituting values into formulae and expressions, including geometry, cost and science formulae.

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Can your students use a formula with confidence? This 31-slide interactive lesson teaches substitution into formulae and expressions with real-life examples.

Mastering Substitution into Formulae at GCSE

Students learn to substitute numerical values into formulae and expressions, including scientific formulae. A starter uses x = 8 to evaluate expressions such as −7(x + 2). They then use formulae for perimeter, the circumference of a circle with π = 3.14 and the area of a triangle, before a cost formula T = 40s + 50c for sweets and chocolate at a school fair, ending with a change-from-£5 problem.

What’s Included

31-slide interactive lesson on substitution into formulae
Learning objective on substituting into formulae and expressions, including scientific formulae
A starter activity evaluating expressions when x = 8
Geometry formulae for perimeter, circumference and area
A cost formula with a change-from-£5 problem and instant feedback

Key Benefits for Students

Builds accuracy substituting into expressions
Shows how letters represent numbers in a formula
Links formulae to shopping and science
Instant feedback on answer questions

Why Teachers Love It

No prep — ready for whole-class teaching on an interactive whiteboard
Real-life contexts keep students engaged
Self-marking questions support independent practice
Suits teaching, revision and homework
A dependable foundation for rearranging formulae

Love this? You’ll love…

A dependable addition to a GCSE algebra topic, giving students the confidence to use any formula they are given. Accurate substitution is essential before rearranging formulae and in science.

Build confident algebra skills today — Add to Basket.

FAQ

What year group is this for? Years 10–11 (ages 14–16), GCSE.

Does it include science formulae? Yes — the objective covers scientific formulae.

Is it self-marking? Yes, with instant feedback on the questions.

Year Groups	Year 10–11
Resource Type	🎓 Interactive Lesson & Activities
Format	Digital Only
Curriculum	England & Wales — KS4 (Years 10–11)
Added	22 April 2019