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Monday 28 August 2017

Bài 11: Practising addition 11 to 14






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Starry, do you remember the different addition stories we learnt about the number 6 7 8 9 and even 10.

Remember 9 plus 1 equals to 10, and 1 plus 9 also equals to 10.
Yes, and 7 plus 3 equals to 10, and 3 plus 7 also equals to 10.
And of course, 6 plus 4 equals to 10, and 4 plus 6 also equals to 10.
I haven’t forgotten 5 plus 5 equals  10.

Today, we will practice some more addition Starry with the numbers 11 12 13 14.
Let’s begin by counting these red flowers and adding them together to get the number eleven.
Here are 1 2 3 4 5 6 flowers and 1 2 3 4 5 flowers.

That 1 2 3 4 5 6 7 8 9 10 11 flowers all together. So 6 plus 5 is 11.
Remember Starry in addition the order of the number is not important.
So 5 plus 6 is also equal to 11.    

And now the orange flowers 1 2 3 4 5 6 7 orange flowers plus 4 orange flowers equal 1 2 3 4 5 6 7 8 9 10 11 flowers,
7 plus 4 equal 11, and 4 plus 7 also equal 11.

Next the blue flowers 1 2 3 4 5 6 7 8 flowers plus 1 2 3 flowers that 1 2 3 4 5 6 7 8 9 10 11 flowers,
8 plus 3 equal 11, and 3 plus 8 also equal 11.
Finally, the yellow flower Starry,
1 2 3 4 5 6 7 8 9 flowers and 1 2 flowers that 1 2 3 4 5 6 7 8 9 10 11 flowers all together.
So 9 plus 2 equal 11, and again 2 plus 9 also equal to 11. It’s that like the stories of 11.

Starry, do you remember the number 12?
Ok, now we will add beads of different amounts to give us the number   12.
1 2 3 4 5 6 7 red beads plus 1 2 3 4 5 red beads is 12 beads, 7 plus 5 equal 12, and 5 plus 7 equal 12.
1 2 3 4 5 6 7 8 blue beads plus 1 2 3 4 blue beads equal 12 beads.
8 plus 4 equal 12, and 4 plus 8 equal 12.
1 2 3 4 5 6 7 8 9 green beads plus 1 2 3 green beads equal 12.         
9 plus 3 equal 12, and 3 plus 9 equal 12.

Now, 1 2 3 4 5 6 7 8 9 10 yellow beads plus 1 2 yellow beads is 1 2 3 4 5 6 7 8 9 10 11 12 beads.
10 plus 2 equasl 12, and 2 plus 10 equals 12.
Finally, 1 2 3 4 5 6 7 8 9 10 11 purple beads plus 1 purple beads equals 12 beads,
11 plus 1 equals 12, and 1 plus 11 equals 12.
That is stories of 12.

Starry, here are different addition that given at the number 13.
1 2 3 4 5 6 7 black kites plus 1 2 3 4 5 6 black kites equals 1 2 3 4 5 6 7 8 9 10 11 12 13 kites,
7 plus 6 equals 13, and 6 plus 7 also equals 13.

1 2 3 4 5 6 7 8 white kites plus 1 2 3 4 5 white kites also equals 1 2 3 4 5 6 7 8 9 10 11 12 13 kites,
8 plus 5 is 13, and 5 plus 8 is also 13.
1 2 3 4 5 6 7 8 9 red kites plus 1 2 3 4 red kites equals 1 2 3 4 5 6 7 8 9 10 11 12 13 kites,
so 9 plus 4 equals 13, and 4 plus 9 also equals 13.    

And now Starry, we will add different objects to give us the number 14.
1 2 3 4 5 6 7 white balls plus 1 2 3 4 5 6 7 white balls equals 1 2 3 4 5 6 7 8 9 10 11 12 13 14 balls, 7 plus 7 equals 14.

1 2 3 4 5 6 7 8 blue balls plus 1 2 3 4 5 6 blue balls equals 1 2 3 4 5 6 7 8 9 10 11 12 13 14 balls,
8 plus 6 equals 14, and 6 plus 8 equals 14.  
1 2 3 4 5 6 7 8 9 red balls plus 1 2 3 4 red balls equals 1 2 3 4 5 6 7 8 9 10 11 12 13 14 red balls.

Now let’s do another activity together.
Here are some flowers, write a number in each blank to make the total equal to the number in the centre.
Shall we begin. The yellow flower with number 11 at it centre.
8 + __ = 11, 8 + 3 =11; __+ 9 =11, 2 + 9 = 11; 5 + __= 11, 5 + 6 = 11; __+ 7 = 11, 4 + 7 =11.

Easy, this is did Starry.
Now the red flower with the number 12 at its centre.
__+7 = 12, 5 + 7 =12; 8 + __ = 12, 8 + 4 =12; 6 + __ =12, 6 + 6 =12; __ + 9 = 12, 3 + 9 = 12.

This is little blue flower has just 3 petal with the number 13 at its centre.
7 + __ = 13, 7 + 6 =13; __ + 9 =13, 4 + 9 =13; 5 + __ =13, 5 + 8 = 13.

Finally, the orange flower Starry with the number 14 in the centre.
8 + __ = 14, 8 + 6 = 14; __ + 9 =14, 5 + 9 = 14; 7 + __ =14, 7 + 7 =14.

Wasn’t that fun Starry?
 Adding different number to get the same number 11 12 13 and 14.
I'm sure it was

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