Teacher's Guide - Pearson

Activity 2.2 (Student’s Book page 21)Pattens 1 (12), 2 (13), 3 (24) and 5 (25) are linear.Exercise 2.1 (Student’s Book page 22)1. Linear. Add 20.3 to the previous term.2. Not linear.2. Not linear.4. Linear. Add 2 to the previous term.5. Not linear.6. Linear. Add 23.5 to the previous term or subtract 3.5.Activity 2.3 (Student’s Book page 23)1. T n5 23 1 (n 2 1) 3 3 5 23 1 3(n 2 1) 5 23 1 3n 2 3 5 3n 2 6;T 105 3(10) 2 6 5 30 2 6 5 242. T n5 n 2 1​1__2 ​; T 5 8​ 1__10 2 ​3. T n5 0.3n 2 1; T 105 24. T n5 6 2 2n; T 105 214Exercise 2.2 (Student’s Book page 23)1. Sequence starts with 214. Add 14 to the previous term; T n5 14n 2 28; T 85 842. Sequence starts with 7. Add 2 to the previous term; T n5 2n 1 5; T 85 213. Sequence starts with 8. Subtract 3 from the previous term; T n5 1 2 3n; T 85 2134. Sequence starts with 24. Subtract 5 from the previous term; T n5 1 2 5n;T 85 2395. Sequence starts with 1__3 ​. Add ​ 1__3 ​to the previous term; T 5 ​ 1__n 3 ​n; T 5 2​ 2__8 3 ​6. Sequence starts with 1 1__4 ​. Subtract ​ 1__2 ​from the previous term; T 5 1​ 3__n 4 ​ 2 ​ 1__2 ​n;T 85 22​1__4 ​Support Activity 2.1 (Student’s Book page 24)1. T 205 40; T 505 1002. 3; 4; 5; 6; 7; 8; 9; 10; 11; 12; …3. T 505 160Activity 2.4 (Student’s Book page 25)1. a) 2; 5; 10; 17 b) 3; 7; 11; 15 c) 33; 34; 35; 362. a) 401 b) 79 c) 523. b) and c)8 EXPLORING MATHEMATICS FORM 3