Lesson Notes By Weeks and Term v5 - Grade 2

Lesson Video

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Performance objectives

• Identify and describe the rule for a number pattern.
• Extend number patterns by counting forwards and backwards.
• Find numbers missing from the middle of a pattern.
• Create your own simple number pattern.

Lesson summary

Overview Number patterns are all around us, from the beautiful geometric designs in Ndebele art to the rhythm of a gumboot dance. In mathematics, a number pattern is a sequence of numbers that follow a specific rule. Understanding these patterns is like learning to crack a secret code! It helps us to think logically, predict what comes next, and understand how numbers are connected. For a Grade 2 learner in South Africa, spotting patterns is a fundamental skill. It helps in everyday tasks like counting money at the spaza shop (e.g., counting in R2 coins or R10 notes), predicting the next house number on a street, or even sharing sweets equally among friends.

Lesson notes

What is a Number Pattern? A number pattern is a list of numbers that are arranged in a special order. This special order is created by a rule. The rule tells us how to get from one number to the next. Think of it like a recipe for numbers!

The Rule: The rule is the most important part of the pattern. It can be something simple like "add 5" or "take away 10". Our job as number detectives is to find the rule! Types of Number Patterns for Grade 2 A. Increasing Patterns (Getting Bigger) These patterns happen when we are adding the same number each time. We are counting forwards.

Counting in 2s (Rule: +2)

This is like counting pairs of things: shoes, socks, or eyes.

Pattern: 2, 4, 6, 8, 10, ...

How it works: We start at 2 and keep adding 2. 2 + 2 = 4 4 + 2 = 6 6 + 2 = 8 Counting in 5s (Rule: +5) This is like counting the money in R5 coins.

Pattern: 5, 10, 15, 20, 25, ...

How it works: We start at 5 and keep adding 5. 5 + 5 = 10 10 + 5 = 15 15 + 5 = 20 Counting in 10s (Rule: +10) This is like counting money in R10 notes.

Pattern: 10, 20, 30, 40, 50, ...

How it works: We start at 10 and keep adding 10. 10 + 10 = 20 20 + 10 = 30 30 + 10 = 40 B. Decreasing Patterns (Getting Smaller) These patterns happen when we are subtracting (taking away) the same number each time. We are counting backwards.

Counting backwards in 1s (Rule: -1) This is like a rocket countdown!

Pattern: 10, 9, 8, 7, 6, ...

How it works: We start at 10 and keep taking away 1. 10 - 1 = 9 9 - 1 = 8 8 - 1 = 7 Counting backwards in 10s (Rule: -10) Imagine you have R100 and you spend R10 every day.

Pattern: 100, 90, 80, 70, 60, ...

How it works: We start at 100 and keep taking away 10. 100 - 10 = 90 90 - 10 = 80 80 - 10 = 70