Bài 7: Introducing sixty to sixty nine

Wow, jigsaw puzzle.

Starry, how many pieces does it have?

You don’t know. Look, it’s written on the box.

6 and 0. Oh Starry I forgot you don’t know what number that is.

6 and 0 is 60 Starry, the puzzle has 60 pieces.

60 is the number that comes after 59, s-i-x-t-y.

Let me explain it to you with these strings of beads.

Each of this string has 1-2-3-4-5-6-7-8-9-10 beads.

Now there are 1 ten+1 ten+1 ten+1 ten+1 ten+1 ten that’s 60 beads Starry, 6 tens, 60.

Suppose we add 1 single bead to these beads Starry that would be 6 tens and 1, 61, s-i-x-t-y o-ne, 61.

On adding 2 beads we get 6 tens 2 units, 62, s-i-x-t-y t-w-o, 62.

Now Starry, let’s add 1-2-3 beads, that gives us 6 tens 3 units, 63, s-i-x-t-y t-h-r-e-e, 63.

That should we do next Starry, let’s add 4 beads. Now we get 6 tens 4, 64, s-i-x-t-h f-o-u-r, 64.

And 6 tens plus 1-2-3-4-5 beads is 6 tens 5, 65 Starry, s-i-s-t-h f-i-v-e.

Now 6 tens plus 6 beads is 6 tens 6, 66, s-i-x-t-h s-i-x, 66.

Here are 7 beads Starry, let’s add them to the 6 tens we get 6 tens 7 that’s 67, s-i-x-t-h s-e-v-e-n, 67.

And 6 tens plus 8 is 6 tens 8, 68, s-i-x-t-y e-i-g-h-t, 68.

Finallly what do we have Starry, 6 tens plus 1-2-3-4-5-6-7-8-9, which is 6 tens 9 units, 69, s-i-x n-i-n-e.

There’s Starry, you have now learnt the numbers in ascending order from 60 to 69.

Let’s count them again!

60-61-62-63-64-65-66-67-68-69

And from the biggest to the smallest in descending order we go 69-68-67-66-65-64-63-62-61and 60.

Now shall we revise what we have just studied Starry!

Identify the numbers and match them with their number names.

The first number is

66, s-i-x-t-h s-i-x.

60 s-i-x-t-y

69, s-i-x n-i-n-e.

63, s-i-x-t-y t-h-r-e-e

67, s-i-x-t-h s-e-v-e-n

61, s-i-x-t-y o-ne

68, s-i-x-t-y e-i-g-h-t

62, s-i-x-t-y t-w-o

And in this activity all the numbers have been mixed up.

We have to put them in the correct serial order.

Let’s begin!

60-61-62-63-64-65-66-67-68 and 69.

Remember Starry, 6 and 0 is the number 60.

And what comes after it in series order 61-62-63-64-65-66-67-68 and 69.