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Even & Odd Numbers
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 We'll learn what even and odd numbers are.
 We will also learn how to identify even and odd numbers.
 And we’ll explore how this knowledge can help us go on field trips, eat noodles, and even pair up our favorite shoes!

Discussion Questions

Before VideoHow can you count by 2s?ANSWER

Each number is 2 more than the number before it. 2, 4, 6, 8, 10, 12.

I can, 3 + 3 = 6.

3 + 6 = 9. No, I can write 4 + 5 = 9 or 5 + 4 = 9, but the groups can't be the same size.

I can, 8 + 8 = 16.

9 + 9 = 18 and 10 + 10 = 20. I can't make 19. One way to make 19 is 10 + 9.


After VideoHow can you tell if a group of objects has an even number of objects?ANSWER

You could pair them off. If there is an even number of objects, they will go into pairs with nothing left over.

You could pair them off. If there is an odd number of objects, there will be one object left over.

Even. I can make two equal groups.

Odd. When I put the objects into pairs, there is one left over.

9 + 9 = 18. 18 is even because it can be put into two equal groups.



Vocabulary

Even number
DEFINE
An even number of objects can be paired in groups of 2 with nothing left over.

Odd number
DEFINE
An odd number of objects cannot be paired in groups of 2 with nothing left over. One of the objects is not paired.

Addition
DEFINE
Putting together two or more groups to find a new total.

Addend
DEFINE
A group being added.

Sum
DEFINE
The result of adding

Equal Groups
DEFINE
Groups that have the same size or quantity.

Skip Count
DEFINE
Counting while skipping numbers. For example, when you skip count by twos you skip every second number: 2, 4, 6, 8, 10, ….

Pattern
DEFINE
Numbers, shapes, or objects arranged following a rule or rules.

Even number
DEFINE

Reading Material
Download as PDF Download PDF View as Separate PageWHAT ARE EVEN & ODD NUMBERS?Numbers can be even or odd. You can tell if a number is even or odd by making pairs, counting by 2s, or looking at the digit in the ones place. Numbers that can be counted by 2s are called even.
To better understand even & odd numbers…
WHAT ARE EVEN & ODD NUMBERS?. Numbers can be even or odd. You can tell if a number is even or odd by making pairs, counting by 2s, or looking at the digit in the ones place. Numbers that can be counted by 2s are called even. To better understand even & odd numbers…LET’S BREAK IT DOWN!
Make pairs of chopsticks.
You have 6 chopsticks. You can put all 6 chopsticks into groups of 2. 6 is an even number. An even number of objects can be paired in groups of 2 with nothing left over. You can count by 2s to see even numbers: 2, 4, 6, 8. When you count by 2s you add a pair each time.
Make pairs of chopsticks. You have 6 chopsticks. You can put all 6 chopsticks into groups of 2. 6 is an even number. An even number of objects can be paired in groups of 2 with nothing left over. You can count by 2s to see even numbers: 2, 4, 6, 8. When you count by 2s you add a pair each time.Make pairs of shoes.
You have 6 shoes. The shoes are in pairs. 6 is an even number. If you take 1 shoe away there are now 5 shoes. 1 shoe has no pair. 5 is an odd number. Odd numbers are numbers where one object cannot be paired. 1, 3, 5, 7, and 9 are all odd numbers.
Make pairs of shoes. You have 6 shoes. The shoes are in pairs. 6 is an even number. If you take 1 shoe away there are now 5 shoes. 1 shoe has no pair. 5 is an odd number. Odd numbers are numbers where one object cannot be paired. 1, 3, 5, 7, and 9 are all odd numbers.Make pairs of bracelets.
You made 20 friendship bracelets. You want to give the bracelets away in pairs. Count the bracelets as you make pairs: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20. 20 is even because 20 objects can be put into pairs.
Make pairs of bracelets. You made 20 friendship bracelets. You want to give the bracelets away in pairs. Count the bracelets as you make pairs: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20. 20 is even because 20 objects can be put into pairs.Find the pattern.
Here are some even numbers: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20. Do you see a pattern? The digits in the ones place repeat: 2, 4, 6, 8, 0. If the digit in the ones place is even, then the whole number is even. In 34, 4 is even so 34 is even. In 35, 5 is odd, so 35 is odd.
Find the pattern. Here are some even numbers: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20. Do you see a pattern? The digits in the ones place repeat: 2, 4, 6, 8, 0. If the digit in the ones place is even, then the whole number is even. In 34, 4 is even so 34 is even. In 35, 5 is odd, so 35 is odd.Write an equation to show even numbers.
Even numbers can be shown in two equal groups. 10 can be put into two groups of 5. 5 + 5 = 10. 16 can be put into two groups of 8. 8 + 8 = 16.
Write an equation to show even numbers. Even numbers can be shown in two equal groups. 10 can be put into two groups of 5. 5 + 5 = 10. 16 can be put into two groups of 8. 8 + 8 = 16. 
Practice Word Problems

Practice Number Problems

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Science & Math$_{/yr}

Science Only$_{/yr}
[Draw or display 9 objects.] Is this an odd or even number of objects?
[Draw or display 14 objects.] Is this an odd or even number of objects?
Write an equation to show that 14 is even.
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