Number sense and counting (T1 W1)
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Number sense refers to a person's ability to understand, interpret, and work with numbers. It includes skills such as recognizing numbers, understanding their relationships, and being able to manipulate them in various contexts. This week, we will explore how to build a strong foundation in number sense through counting exercises and visual representations.
Let's consider the number 12. We can represent this number using different visual models. For example, we can use counters or blocks to show 12 as 10 + 2. This helps us understand the composition of numbers. If we have 3 groups of 4 counters, we can also see that 3 x 4 = 12. Visual models make it easier to grasp the concept of numbers and their relationships.
Now, let's practice counting together. I will show you a set of objects, and I want you to count them aloud. For instance, if I have 5 apples and 3 oranges, how many fruits do I have in total? (Students will count and respond with 8.) After that, we will discuss how we can represent this using addition: 5 + 3 = 8. This reinforces both counting and addition skills.
For your independent practice, solve the following problems on your own. Remember to show your working clearly. 1) If you have 15 marbles and you give away 7, how many do you have left? 2) Count the number of stars in the following image and write it down. 3) Create your own number sentence using the numbers 4, 5, and 9. Explain your reasoning to a partner.
Answer: 10
The sum of 6 and 4 is 10.
Answer: All of the above
All options correctly add up to 15.
Answer: 15
20 - 5 = 15, so you have 15 candies left.
Answer: 15
The product of 3 and 5 is 15.
Answer: 2 + 3 = 5
This sentence shows that 2 added to 3 equals 5.
Answer: 18
18 is greater than 12.
Answer: 4
There are 4 tens in the number 47.
Answer: 15
10 + 5 = 15, so you have 15 apples in total.