Factorising Quadratic Expressions ax² + bx + c — Interactive Lesson (Ages 14–16)

Name: Factorising Quadratic Expressions ax² + bx + c — Interactive Lesson (Ages 14–16)
Brand: Skoolmaths
SKU: SKM-104581
Price: 3.79 GBP
Availability: InStock

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

A 14-slide interactive KS4 lesson on factorising quadratic expressions, including those where the coefficient of x² is not 1, with worked examples and self-marking questions.

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Lesson at a glance

What pupils will learn

Take out common factors first
Factorise ax² + bx + c by splitting the middle term
Check by expanding

Curriculum

UK: Year 10–11 Maths, National Curriculum (England)
Topic area: Algebra
US equivalent: Grades 9–10 (year level only; not mapped to US standards)

How it is interactive

8 multiple-choice questions
3 fill-in-the-blank questions
1 true or false question

Feedback and what you get

Questions are marked automatically as pupils answer: a sound and a character reaction show straight away whether they are right, and correct answers earn points, with a results screen at the end.

A 16-slide interactive lesson that runs in any web browser on a computer, tablet or interactive whiteboard. Members open it online from their year group page. Buying it on its own gives you a .zip download to unzip and open.

Free preview: try the first slides before you decide. Included in every Skoolmaths plan.

Stuck when the number in front of x² isn’t 1? This 14-slide interactive lesson teaches factorising quadratic expressions step by step, from x² + bx + c to ax² + bx + c.

Mastering Factorising Quadratic Expressions at GCSE

Students recap factorising when the coefficient of x² is 1, including expressions with negative numbers, then move on to expressions where it is not 1. A worked example factorises 2x² − x − 3 into (2x − 3)(x + 1), showing how the possible factor pairs combine to give the middle term. Students then complete factorisations such as 3x² + 14x + 8 and 8x² − 6x + 1 and choose the correct factorised form.

What’s Included

14-slide interactive lesson on factorising quadratic expressions
Learning objectives on the concept of factorisation and negative numbers
A worked example factorising 2x² − x − 3
Complete-the-factorisation and multiple-choice questions
Self-marking questions with instant feedback

Key Benefits for Students

Shows how to find the factor pairs and test the middle term
Covers negative numbers, a common stumbling block
Moves from x² + bx + c to ax² + bx + c
Instant feedback on answer questions

Why Teachers Love It

No prep — ready for whole-class teaching on an interactive whiteboard
Worked examples model how to set out each factorisation
Self-marking questions support independent practice
Suits teaching, revision and homework
A useful stretch for confident students

Love this? You’ll love…

A dependable addition to a GCSE algebra topic, giving students a clear method for a skill many find difficult. Secure factorising also underpins solving quadratic equations and simplifying algebraic fractions.

Build confident factorising skills today — Add to Basket.

FAQ

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

Does it cover ax² + bx + c where a is not 1? Yes — with worked examples and practice.

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	4 March 2026