Lesson Notes By Weeks and Term v5 - Grade 1

Lesson Video

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Performance objectives

• Find and continue number patterns.
• Describe the rule for a pattern (like 'add 2').
• Create your own number patterns.
• See patterns in pictures and numbers.

Lesson summary

Number patterns are all around us! From the tiles on the floor to the days of the week, we see patterns everywhere. Understanding patterns helps us predict what comes next, which is a very important skill in mathematics and in everyday life. In South Africa, understanding patterns can help us with things like planning our day according to the time schedule of the bus, or even predicting how many sweets we'll need for all our friends at a birthday party. This week, we will focus on identifying and creating simple number patterns and the rules that govern them. This skill builds a foundation for later mathematical concepts like multiplication, division, and algebra.

Lesson notes

A pattern is something that repeats or follows a predictable order. In mathematics, number patterns are sequences of numbers that follow a specific rule. A rule tells us how to get from one number in the pattern to the next. The rule is what makes the pattern predictable. We can find the rule by looking at how the numbers change. For example, do they get bigger by the same amount each time? Or smaller?

Examples of Number Patterns and Rules: Counting Forward by 1: 1, 2, 3, 4, 5… The rule is "Add 1" or "+1". Why? Each number is one more than the number before it. How? We start with 1, then add 1 to get 2, add 1 to get 3, and so on.

Counting Forward by 2: 2, 4, 6, 8, 10… The rule is "Add 2" or "+2". Why? Each number is two more than the number before it. How? We start with 2, then add 2 to get 4, add 2 to get 6, and so on.

Counting Forward by 5: 5, 10, 15, 20, 25… The rule is "Add 5" or "+5". Why? Each number is five more than the number before it. How? We start with 5, then add 5 to get 10, add 5 to get 15, and so on.

Counting Forward by 10: 10, 20, 30, 40, 50… The rule is "Add 10" or "+10". Why? Each number is ten more than the number before it. How? We start with 10, then add 10 to get 20, add 10 to get 30, and so on.

Counting Backward by 1: 10, 9, 8, 7, 6… The rule is "Subtract 1" or "-1". Why? Each number is one less than the number before it. How? We start with 10, then subtract 1 to get 9, subtract 1 to get 8, and so on.

Counting Backward by 2: 10, 8, 6, 4, 2… The rule is "Subtract 2" or "-2". Why? Each number is two less than the number before it. How? We start with 10, then subtract 2 to get 8, subtract 2 to get 6, and so on.