Students learn how to write the product of three binomials by expanding a cubic expression. Learning progresses onto solving cubic identities and using an expansion to calculate a cube number.
At the start of the lesson students recap multiplying out linear and quadratic expressions. The plenary is used to assess the progress made by all students through typical past exam questions.
Differentiated Learning Objectives
- All students should be able to expand the product of two or more binomials in the form x3+ax2+bx+c
- Most students should be able to expand the product of two or more binomials in the form ax3+b2+cx+d
- Some students should be able to use expand three or more binomials.