This video tutorial explains the concept of even and odd numbers using counters and pairs. It demonstrates how even numbers can be represented as the sum of two equal add-ins and how odd numbers can be seen as doubles plus one. The video also covers counting by twos to identify even numbers and includes a word problem to apply the concept of equal groups. The lesson concludes with a preview of the next topic on place value.

What is an even number?

• A number that is always odd

• A number that can be divided into two equal groups with no leftovers

• A number that always has one leftover

• A number that cannot be divided into equal groups

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CCSS.2.OA.C.3

How can you represent an even number using add-ins?

• As the sum of two different add-ins

• As the sum of one add-in

• As the sum of two equal add-ins

• As the sum of three add-ins

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CCSS.2.OA.C.3

What is a characteristic of an odd number?

• It can be divided into two equal groups with no leftovers

• It can be divided into three equal groups

• It always has one leftover when divided into two groups

• It is always greater than 10

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CCSS.1.OA.C.6

CCSS.2.OA.B.2

What are doubles facts?

• Facts about numbers that can be expressed as the sum of two equal add-ins

• Facts about numbers that are prime

• Facts about numbers that are always odd

• Facts about numbers that can be divided by three

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CCSS.2.OA.C.3

How can you determine if a number is even by counting?

• By counting by threes

• By counting by fives

• By counting by sevens

• By counting by twos

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CCSS.3.OA.D.9

What does skip counting by twos help identify?

• Prime numbers

• Odd numbers

• Even numbers

• Composite numbers

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CCSS.2.OA.C.3

How can odd numbers be represented?

• As four equal groups

• As three equal groups

• As two equal groups plus one

• As two equal groups

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CCSS.1.OA.C.6

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What is the doubles fact for the number 15?

• 5 plus 5 plus 1

• 7 plus 7 plus 1

• 6 plus 6 plus 1

• 8 plus 8 plus 1

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CCSS.3.OA.D.8

In the word problem, how many blocks do Emma and Tala each live from school?

• Two blocks

• Three blocks

• Five blocks

• Four blocks

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CCSS.2.OA.C.3

What is a key takeaway about even numbers?

• They are always greater than odd numbers

• They can be written as the sum of two equal add-ins

• They always have one leftover

• They can be divided into three equal groups

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CCSS.2.OA.C.3