Algebraic Expressions

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• Maths
• Lower Secondary (Key Stage 3)

Algebraic Expressions

Objectives:

- Use algebraic notation correctly. 

-Simplify expressions by collecting like terms. 

-Expand and factorise single brackets. 

-Substitute values into expressions.

Starter: Key Vocabulary Matching

Match algebraic terms to their definitions. Work in pairs. Discuss your answers and share your thoughts.

Key Algebra Vocabulary - Answers

Modelling: Simplifying Expressions

4a+2b+2a

Collecting like terms:

4a+2b+2a

6a+2b

Guided Practice: Whiteboard Tasks

Independent Work: Choose Your Challenge

Stretch Yourself

Support & Practice

Tier 1: Simplifying and expanding expressions, scaffolded.

Tier 2: Further practise with substitution. Colour-coded sheets and examples for support.

Tier 3: Factorising expressions. Challenge: Expand and simplify two brackets. Aim to explain your working step-by-step.

Plenary: Explain Your Thinking

Answer a final simplify, expand, or substitution question. Explain your method to a partner using today’s vocabulary.

Write down 3 things you learned in this lesson.

Write down 2 things you want to know more about.

Ask 1 question about something you haven't quite understood yet.