The video tutorial introduces the concept of 'doubles plus one' in addition. It begins by explaining the number line and how numbers adjacent to each other can be used in this strategy. The teacher demonstrates the method of doubling the smaller number and adding one to solve addition problems. Several examples are provided to illustrate the concept, followed by practice problems to reinforce learning. The lesson concludes with a summary of the doubles plus one strategy.

What is the main focus of today's lesson?

• Division facts

• Doubles plus one

• Multiplication facts

• Subtraction facts

What is the result of 1 plus 1?

• 4

• 3

• 2

• 1

Which numbers are next to each other on a number line?

• 4 and 5

• 2 and 4

• 1 and 3

• 3 and 5

What is the sum of 0 plus 1?

• 3

• 0

• 1

• 2

How do you solve a doubles plus one problem?

• Subtract one from the larger number

• Double the smaller number and add one

• Double the larger number

• Add the numbers directly

What is 3 plus 4 using the doubles plus one strategy?

• 8

• 9

• 6

• 7

If 4 plus 4 is 8, what is 4 plus 5?

• 8

• 9

• 10

• 11

What is the result of 5 plus 6?

• 10

• 13

• 11

• 12

What is the sum of 6 plus 7?

• 15

• 14

• 13

• 12

What is the result of 7 plus 8?

• 14

• 15

• 16

• 17