Understanding Addition and Arrays

This video tutorial teaches how to create arrays by modeling equal add-ins. It begins with an introduction to arrays and a review of addends and sums in addition. The tutorial addresses common misunderstandings, such as the inability to create arrays with unequal add-ins. It provides step-by-step instructions for creating arrays using equal add-ins, illustrated with examples using candies and circles. By the end, viewers will understand how to model arrays with equal add-ins effectively.

What are the parts of an addition sentence that are combined to form a sum?

• Multiples

• Factors

• Divisors

• Addends

In the equation 4 + 8 = 12, what is the sum?

• 16

• 12

• 8

• 4

Why can't the number 7 be arranged into an array with equal addends of 2?

• Because 7 is too small

• Because 7 is an odd number

• Because there would be one left over

• Because 7 is a prime number

What is an equal addend?

• An addend that is not used

• An addend that is larger than others

• An addend that is repeated equally

• An addend that is smaller than others

How many groups of two candies are needed to form an array for the equation 2 + 2 + 2 + 2 + 2?

• 5

• 4

• 6

• 3

What is the sum of the equation 2 + 2 + 2 + 2 + 2?

• 12

• 10

• 14

• 8

In the example using circles, how many groups of three are needed?

• 4

• 3

• 5

• 2

What is the total number of circles in the array for the equation 3 + 3 + 3?

• 12

• 6

• 15

• 9

What is the sum of the equation 3 + 3 + 3?

• 15

• 12

• 9

• 6

What concept did you learn about in this lesson?

• Creating arrays with prime numbers

• Creating arrays with unequal addends

• Creating arrays by modeling equal addends

• Creating arrays with different addends