Algebra in the primary curriculum

Extending and using patterns - first and second class

Content for first class

The child should be enabled to

• Recognise pattern, including odd and even numbers.
Count in twos on the hundred square and colour each number you stop at.
Construct sets that increment in twos, starting with 0 (0, 2, 4, 6…), starting with 1 (1, 3, 5, 7 ….)
Discuss and record pictorially?
Use two colours to identify odd and even numbers on the hundred square and discuss results.
Extend activities to group counting with fives and tens.
• Explore and use patterns in addition facts.
Notice patterns that make up tens e.g. (9 + 1 = 10, 2 + 8 = 10, 18 + 2 = 20) and the effect of adding 10 to a given number e.g. 3 + 10 = 13, 13 + 10 = 23
• Understand the use of a frame to show the presence of an unknown number e.g. 3 + 5 = __ or 2 + __ = 6.

Content for second class

The child should be enabled to

• Recognise patterns and predict subsequent numbers.
Counting on the hundred square e.g. start on 2, count on 5, 2 + 5 = 7 or start on 12, count on 5, 12 + 5 = 17.
Explore other number patterns, including odd and even number patterns, on the hundred square.
Group count in threes, fours and sixes and discuss the results.
• Explore and use patterns in addition facts
• Understand the use of a frame to show the presence of an unknown number e.g. 24 + 6 = __ , 14 + __ = 20, 2 + 4 + __ = 12.