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Friday 25 August 2017

BÀI 9: Greater than, Less than and Equal to symbols






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Starry, have you seen the long green animal before?
Yes, it is an alligator
Hasn’t this got a big mouth? It looks so hungry.
It can eat up all these the little fishes!
Now, Starry. Take a closer look at the shape of its mouth!
The shape is like this. 


Do you know what this sign is?
It is the greater-than sign.
Do have you remember the greater-than sign .
Just think of the alligator and its open mouth.
Remember the alligator always eats a greater number of fishes.

Suppose we have 5 fishes and 3 fishes.
We write 5 is greater-than 3 (5>3).
The mouth of the alligator, Starry is open towards the greater number of  fishes.
The closed part of the mouth points to the smaller number of fishes.

Here we have 7 fishes and 2 fishes. Now, 7 is the greater number of fish.
And so, the mouth of the alligator will be open towards 7, Starry!
We write 7 is greater than 2 (7>2).

Starry, suppose we want to show one number is less-than another.
All we have to do it turns the alligator mouth around because remember the alligator always eats the greater number.

So, if we have 3 fishes and 8 fishes, we write it as 3 is less than 8.
And if we have 5 fishes and 7 fishes, we write it as 5 is less than 7.
Don’t forget the alligator open mouth.
And 2 less-than 5 is written as 2 less-than 5.
Remember Starry, greater-than and less-than are 2 different signs.

Now, Starry. What if we have the same number of fish.
Then be used the equal sign.
See, 3 fishes and 3 fishes is written as 3 equals 3.
And 7 equals 7 is written as 7 equals 7.

Now, that you have learned your signs.
Starry, can we do an activity together.
Fill in the blanks with the correct sign : greater than, less than or equal to.
Let’s begin!
5 flowers (dash) 8 flowers. 5 flowers are less than 8 flowers.
9 leaves (dash) 2 leaves. 9 leaves are greater than 2 leaves. 
10 ants (dash) 5 ants. 10 ants are greater than 5 ants.
4 butterflies (dash) 4 butterflies. 4 butterflies equal to 4 butterflies.
4 bees (dash) 10 bees. 4 bees are less than 10 bees.

In this activity, you have to say whether the signs used are correct or wrong by putting a tick or a cross.
If wrong we have to correct the signs.
8 is less than 8 . wrong. Starry, the correct answer is “8 equals to 8”.
1 is less than 8.  correct. 
2 is greater than 4 .  wrong. The correct answer is “2 is less than 4”.
4 is less than 3 . wrong.
What do you think it the correct answer Starry?
Yes, the correct answer is “4 is greater than 3”.
8 is greater than 2. correct.
5 equals to 5 –.correct.

Wasn't the alligator a great help in learning the different sign,Starry.
Remember,the alligator is alway hungry and so eat the greater number of fishes




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