Author note — to cover

Expand products like (2x + 3)(3x − 1) and (5 − 2x)(x + 4), tracking coefficient products in the middle terms; include two-variable cases like (2x + y)(x − 3y). Both tiers — A4 leaves products of two binomials unbraced, so Foundation meets these too. Triple products are Higher. (A4)

• Fluency — direct questions on double brackets with coefficients, limited to this lesson's stated scope (4 questions).
• Application — use the same skill in unfamiliar or contextual questions without introducing a later method (4 questions).
• Check — questions built around the exclusions and likely misconceptions named in the lesson brief (4 questions).