1. Level 4/5 Booster
Lesson 7B
Sequences

2. position term sequence term-to-term rule Objectives:
Generate and describe sequences.
Vocabulary:
position
term
sequence
term-to-term rule

3. Find the next two terms for each of the sequences below.
12, 14, 16, 18, 20, ……
2, 4, 6, 8, 10, ……
15, 20, 25, 30, 35, ……
19, 24, 29, 34, 39, ……
41, 39, 37, 35, 33, ……
21, 24, 27, 30, 33, ……
-2, 0, 2, 4, 6, ……
21, 16, 11, 6, 1, ……
15, 10, 5, 0, -5, ……
1, 2, 4, 8, 16, ……
Explain for each question how you found the missing numbers.
W/S 7.1B

4. Answers:
12, 14, 16, 18, 20, ……
2, 4, 6, 8, 10, ……
15, 20, 25, 30, 35, ……
19, 24, 29, 34, 39, ……
41, 39, 37, 35, 33, ……
21, 24, 27, 30, 33, ……
-2, 0, 2, 4, 6, ……
21, 16, 11, 6, 1, ……
15, 10, 5, 0, -5, ……
1, 2, 4, 8, 16, ……
22, 24 the numbers go up in two’s
12, 14 the numbers go up in two’s
40, 45 the numbers go up in five’s
44, 49 the numbers go up in five’s
31, 29 the numbers go down in two’s
36, 39 the numbers go up in three’s
8, 10 the numbers go up in two’s
- 4, -9 the numbers go down in five’s
- 10, -15 the numbers go down in five’s
32, 64 the numbers are doubling each time

5. The grey squares are square numbers – 1, 4, 9,…..
There are always 4 white tiles
Grey 4² and white 4. There will be 16 grey and 4 white tiles

6. M7[1]3B
The grey squares go up in 1’s – 1, 2, 3…..
The white squares go up in 2’s – 4, 6, 8,….
There will be 4 grey and 10 white.

7. position term sequence term-to-term rule Objectives:
Generate and describe sequences.
Vocabulary:
position
term
sequence
term-to-term rule

8. Thank you for your attention