Patterns within number patterns can also be illustrated by using number lines, for example:
Skip count pattern in 2s: either all odd or all even even
even odd odd odd even odd skip 1 odd odd +10 even odd even odd
Skip count pattern in 4s: either every second odd or every second even skip 1 odd
even odd odd even odd skip 1 even -2 +2 -10 +2 -10
Skip count pattern in 8s: either (+ 10 - 2) or (- 10 + 2) +10
-2 +2 -10 even even odd skip 1 even +10 -2 +2 -10
Patterns within number patterns can also be illustrated by using number grids. On a 0 to 99 number grid, patterns can be sorted into three groups: • Column patterns:
Count in 2s from any odd number Count in 2s from any even number
90 91 92 93 94 95 96 97 98 99 80 81 82 83 84 85 86 87 88 89 70 71 72 73 74 75 76 77 78 79 60 61 62 63 64 65 66 67 68 69 50 51 52 53 54 55 56 57 58 59 40 41 42 43 44 45 46 47 48 49 30 31 32 33 34 35 36 37 38 39 20 21 22 23 24 25 26 27 28 29 10 11 12 13 14 15 16 17 18 19 0 1 2 3 4 5 6 7 8 9
90 91 92 93 94 95 96 97 98 99 80 81 82 83 84 85 86 87 88 89 70 71 72 73 74 75 76 77 78 79 60 61 62 63 64 65 66 67 68 69 50 51 52 53 54 55 56 57 58 59 40 41 42 43 44 45 46 47 48 49 30 31 32 33 34 35 36 37 38 39 20 21 22 23 24 25 26 27 28 29 10 11 12 13 14 15 16 17 18 19 0 1 2 3 4 5 6 7 8 9
Count in 2s from any odd number Count in 2s from any even number
90 91 92 93 94 95 96 97 98 99 80 81 82 83 84 85 86 87 88 89 70 71 72 73 74 75 76 77 78 79 60 61 62 63 64 65 66 67 68 69 50 51 52 53 54 55 56 57 58 59 40 41 42 43 44 45 46 47 48 49 30 31 32 33 34 35 36 37 38 39 20 21 22 23 24 25 26 27 28 29 10 11 12 13 14 15 16 17 18 19 0 1 2 3 4 5 6 7 8 9
90 91 92 93 94 95 96 97 98 99 80 81 82 83 84 85 86 87 88 89 70 71 72 73 74 75 76 77 78 79 60 61 62 63 64 65 66 67 68 69 50 51 52 53 54 55 56 57 58 59 40 41 42 43 44 45 46 47 48 49 30 31 32 33 34 35 36 37 38 39 20 21 22 23 24 25 26 27 28 29 10 11 12 13 14 15 16 17 18 19 0 1 2 3 4 5 6 7 8 9
0 0
Count in 1 1
Coun 2
10 10 1211 11 1 20 20 2221 21 2 30 30 3231 31 3 40 40 4241 41 4 50 50 5251 51 5 60 60 6261 61 6 70 70 7271 71 7 80 80 8281 81 8 90 90 9291 91 9
even odd skip 1 odd even odd skip 1 even +10 -2 even even odd even
Section 3: Teaching and learning Mathematics
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