Mathematics - Term 2 - Week 9

Number sense refers to a person's ability to understand, interpret, and work with numbers. It involves recognizing the relationships between numbers, understanding their magnitude, and being able to manipulate them in various ways. This week, we will explore how to develop our number sense through counting strategies and visual representations. We will discuss how number sense can help us solve real-life problems and make sense of mathematical concepts.

Let's consider the number 24. We can represent this number using a ten-frame model. A ten-frame is a simple visual tool that helps us see how many tens and ones are in a number. For 24, we fill two full ten-frames (representing 20) and add 4 more counters in the ones place. This visual representation helps us understand that 24 is made up of 2 tens and 4 ones, reinforcing our counting skills and number sense.

In small groups, let's engage in a number talk. Each group will be given a number, and you will discuss how many different ways you can represent that number using addition, subtraction, or visual models. For example, if your number is 15, you might represent it as 10 + 5, 7 + 8, or even using a number line. After discussing, each group will share their findings with the class, allowing us to see different perspectives on the same number.

Now it's time for you to practice independently. Solve the following problems in your exercise books: 1) How many ways can you count to 30 using skip counting by 5s? 2) Create a visual model for the number 37 using a ten-frame. 3) Write a short paragraph explaining why number sense is important in everyday life. Remember to show your working clearly and check your answers for accuracy.

• The ability to memorize numbers
• Understanding and working with numbers
• A method of counting
• A type of math problem

Answer: Understanding and working with numbers

Number sense involves the ability to understand, interpret, and manipulate numbers effectively.

• A calculator
• A number line
• A textbook
• A worksheet

Answer: A number line

A number line is a visual representation that helps in understanding the order and value of numbers.

Answer: It helps to understand the process and identify mistakes.

Showing your working allows you to track your thought process and correct any errors.

• 5
• 6
• 50
• 0

Answer: 5

In the number 56, there are 5 tens (50) and 6 ones.

Answer: 0, 3, 6, 9, 12, 15, ...

Skip counting by 3s means adding 3 repeatedly to the previous number.

• 4 tens and 2 ones
• 2 tens and 4 ones
• 42 ones
• 3 tens and 12 ones

Answer: 4 tens and 2 ones

The number 42 consists of 4 tens (40) and 2 ones.

• 5
• 10
• 15
• 20

Answer: 10

When counting by 5s starting from 10, the sequence begins at 10.