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Educator and Tagging Information:
Learning Area:
Maths
Resource Name:
Maths
Assessment Exemplar Number:
M8.85
Item:
85
Phase:
Senior
Grade:
8
Learning Outcome(s) and Assessment Standard(s):
Learning Outcome 2: Patterns, Functions and Algebra
Assessment Standard: We know this when the learner
8.2.1 Investigates and extends numeric and geometric patterns looking for a relationship or rules,
including patterns: represented in physical or diagrammatic form; not limited to sequences
involving constant difference or ratio; found in natural and cultural contexts of the learner’s own
creation; represented in tables; represented algebraically.
8.2.2 Describes, explains and justifies observed relationships or rules in own words or in algebra.
8.2.7 Determines, analyses and interprets the equivalence of different descriptions of the same
relationship or rule presented: verbally; in flow diagrams; in tables; by equations or expressions in
order to select the most useful representation for a given situation.
Learning Space:
Assessment
Hyperlinks:
To be completed later.
Number of questions for exemplar:
1
Rating:
Easy questions:
Question 1
Medium questions:
Difficult questions:
Assessment Task
Questions:
1.
Peter made up a 7 by 7 table with each row having a certain pattern that it is following. In
each row the next term will be two less than the previous term.
1 2 3 4 5 6 7
1
2
3
4
5
6
-7
0
7
4
19
a)
Complete the table using the rule in each row.
b)
In your own words, describe the rule that is being formed down each column.
c)
Use this rule to write down the sequence of numbers in the 6th row and 7th row.
Solution
1.
a)
1
2
3
4
5
6
7
1
-1
-3
-5
-7
-9
-11
-13
2
2
0
-2
-4
-6
-8
-10
3
7
5
3
1
-1
-3
-5
4
14
12
10
8
6
4
2
5
23
21
19
17
15
13
11
6
7
b)
Each column increases by -2 units, and each row increases by consecutive odd numbers
starting with 3.
1
2
3
4
5
6
7
1
-1
-3
-5
-7
-9
-11
-13
2
2
0
-2
-4
-6
-8
-10
3
7
5
3
1
-1
-3
-5
4
14
12
10
8
6
4
2
5
23
21
19
17
15
13
11
1
2
3
4
5
6
7
1
-1
-3
-5
-7
-9
-11
-13
2
2
0
-2
-4
-6
-8
-10
3
7
5
3
1
-1
-3
-5
4
14
12
10
8
6
4
2
5
23
21
19
17
15
13
11
6
34
32
30
28
26
24
22
7
47
45
43
41
39
37
35
6
7
c)
Appendix of Assignment Tools
Number pattern
Function