Teacher: Ms. S. Mills Subject: Mathematics Grade: 10 Date: September 2022 Topic: Algebra Sub Topic: Product of Two Binomials General Objectives - Students should be able to manipulate the distributive law to solve problems relating to product of two binomials. Specific Objectives: Students should be able to: Knowledge (i) Multiply two different binomials (ii) Multiply a binomial by itself (iii) Multiply two binomials where the result is a difference of two squares. (iv) Use the foil or grid method to facilitate the multiplication of any given two binomials (v) Solve geometric problems using the multiplication of two binomials Prerequisite: Students should be able to : - Manipulate the distributive property of multiplication. - Add and subtract algebraic expressions - Multipy monomials by algebraic expressions Engagement Students will be asked to solve the following problems. (i) 5𝑥 2 𝑦 × 3𝑥𝑦 3 (ii) 3𝑦 × (4𝑥 + 3) (iii) (5𝑎 + 7) × 2 (iv) 𝑥 2 × (3𝑥𝑦 + 𝑥 3 ) Whole Class Share Students will be selected at random to solve problem on white board. Misconceptions will be identified and correct. Explain If (𝑎 + 𝑏)(𝑐 + 𝑑) can be expressed as: And further expressed as: Which gives: Resulting in 𝑎𝑐 + 𝑏𝑐 + 𝑎𝑑 + 𝑏𝑑 Explore (Pair Sharing) Then, Expand and simplify (𝑥 + 4)(𝑥 + 6) using this method Whole Class Share – A pair will volunteer to share solution with class. Explanation To solve (𝑥 − 2)(𝑥 2 +) can be solve: 𝑥3 + 𝑥 − 2𝑥 2 Rules when multiplying: First first term in each bracket Outer outer term in each bracket Inner inner term in each bracket Last the last term in each bracket Another Way −2 Explore – (pair share) Using any method of your choice, expand and simplify: (i) (2𝑚 + 4)(2𝑚 − 4) (ii) (2𝑦 − 5)2 Whole Class Share – Students will be chosen at random to solve problems on white board. Identification and correction of misconceptions will be done. Elaborate Please find attached worksheet. Extended Learning Find the area of a rectangle that has a width of −𝑥−5𝑦 cm and a length of −𝑥+4𝑦 cm