In this video tutorial, first graders learn about missing addends in addition and subtraction problems. The lesson begins with an introduction to the concept of addends and the use of ten frames to visualize numbers. Students solve word problems involving butterflies and birds, using counting and ten frames to find missing numbers. The tutorial includes a math assignment and an optional online game for further practice. The lesson concludes with a recap and a check on the students' understanding of the material.

What is a missing addend?

• A number that is added to another number

• A part of a multiplication problem

• A part of a subtraction problem

• A number that is subtracted from another number

What do both ten frames have in common?

• They both have 11 butterflies

• They both have 13 butterflies

• They both have 10 butterflies

• They both have 5 butterflies

How many butterflies are in ten frame B?

• 13

• 12

• 11

• 10

How many green butterflies does Lucy have?

• 5

• 10

• 13

• 8

What is the total number of birds in the tree?

• 13

• 17

• 11

• 6

How many yellow birds are in the tree?

• 11

• 6

• 10

• 7

What number plus 8 equals 15?

• 5

• 6

• 7

• 8

What is the missing number in the equation 1 + ? = 6?

• 7

• 4

• 5

• 6

What is the missing number in the equation 4 + ? = 11?

• 6

• 7

• 8

• 9

Can you find the missing addend in a word problem?

• Never

• Yes

• No

• Sometimes