Counting in 3s | Year 3 Mathematics PDF Download

Repeated addition

• Observing Dice: There are 4 dice, each displaying the number 3.

Calculations:

• Asking what 3 + 3 + 3 + 3 equals.
• Multiple methods can be used to find the answer.
• One way is to double the first two threes and then double them again.
• Another method involves counting up in threes.
• The correct answer is 12.

Using Cubes

Pattern with Cubes: Presenting different configurations of blocks, increasing in number.

Patterns and Numbers:

• Noting a pattern where the numbers increase by 3 each time.
• Examples include 3, 6, 9, 12.
• Illustrating how 3 + 3 + 3 + 3 equals 12.

Using Arrays

• Arrays are a way to organize elements in a specific order.
• An array can be visualized as a collection of items arranged in rows and columns.
• Counting in arrays can follow different patterns, such as counting in 3s from top to bottom or from left to right.
  

Counting on a Number Line

• A number line is a visual representation of numbers in order.
• Counting in 3s on a number line shows a repetitive pattern.
• Observing the number line can help identify the regular intervals between numbers.

Counting on Hands

• Counting on hands is a practical way to understand counting in 3s.
• By using fingers on hands, one can visualize multiples of 3 easily.
• After 30, the next multiples of 3 would be 33, 36, 39, and so on.
• Continuing the pattern of counting in 3s helps reinforce the concept of multiples.