Number sense and counting (T4 W5)
Progress: 0/7 checkpoints complete (0%).
0/400
0/400
0/400
0/400
0/400
0/400
0/400
0 due | 0 overdue
No due spaced reviews.
No recommendations right now.
No baseline score yet.
No topic mastery records yet.
No adaptive path suggestions yet.
Move from lesson study to exam practice in Mathematics.
No direct subject mapping found yet. Browse past papers to pick province and subject.
Number sense is the ability to understand, relate, and connect numbers. It involves recognizing numbers, understanding their values, and being able to manipulate them in various ways. For example, knowing that the number 10 is made up of 1 ten and 0 ones helps us understand place value. In this lesson, we will explore how to count forwards and backwards, recognize patterns in numbers, and use visual aids like number lines and ten frames to enhance our understanding.
Let's look at counting forward by 2s starting from 0. The sequence is 0, 2, 4, 6, 8, 10, and so on. Now, if we count backward from 10 by 2s, we get 10, 8, 6, 4, 2, 0. Notice how the numbers decrease consistently. We can use a number line to visualize this counting process, marking each number as we go along. This helps us see the relationship between the numbers and reinforces our understanding of even numbers.
Let's have a number talk! I will say a number, and you will tell me what comes next or before it. For example, if I say 15, what comes next? (Students respond: 16) What comes before 15? (Students respond: 14) Now, let's try counting by 5s starting from 0. What are the first five numbers? (Students respond: 0, 5, 10, 15, 20) Great job! Remember to think about the patterns you see in these sequences.
Now it's your turn to practice independently. Solve the following problems and show your working: 1) Count backward from 30 by 3s. Write down the numbers you get. 2) What is the sum of 12 and 8? 3) If you have 5 apples and you buy 7 more, how many apples do you have in total? Remember to check your work and correct any mistakes!
Answer: 8
The sequence is counting by 2s, so the next number after 6 is 8.
Answer: 24
Counting backward, the number before 25 is 24.
Answer: 20, 16, 12
Counting backward by 4s from 20 gives us 20, 16, and 12.
Answer: 25
Adding 15 and 10 together equals 25.
Answer: 14
14 is an even number because it can be divided by 2 without a remainder.
Answer: 8
You add 3 and 5 together to get a total of 8 oranges.
Answer: 40
The sequence is counting by 10s, so the next number after 30 is 40.
Answer: 0, 3, 6, 9, 12
Counting by 3s from 0 gives us the sequence 0, 3, 6, 9, and 12.