The video tutorial introduces the concept of doubles and doubles plus one in mathematics. It begins with a hands-on activity using fingers to demonstrate doubling numbers. The lesson progresses to explain how to add one more to a double, forming the doubles plus one concept. Through examples and practice, students learn to identify and solve doubles and doubles plus one problems. The session concludes with a review and summary of the key concepts.

What is the first step in the initial activity described in the lesson?

• Wave your hands.

• Hold up one finger on each hand.

• Make two fists.

• Clap your hands.

How many fingers are raised after the first step of the activity?

• Four

• Three

• One

• Two

What mathematical concept is introduced using fingers in the activity?

• Doubling

• Division

• Subtraction

• Addition

What is the result of doubling the number 3?

• 8

• 5

• 7

• 6

What is the learning goal of the lesson?

• To divide numbers by two.

• To add doubles and doubles plus one.

• To multiply numbers by two.

• To subtract numbers quickly.

What is the sum of 3 plus 3 plus 1?

• 9

• 7

• 8

• 6

What is the doubles number sentence for the number 4?

• 4 + 3 = 7

• 4 + 4 = 8

• 4 + 6 = 10

• 4 + 5 = 9

What is the result of adding one to the double of 4?

• 9

• 10

• 8

• 11

What is the doubles plus one number sentence for 2?

• 2 + 5 = 7

• 2 + 4 = 6

• 2 + 3 = 5

• 2 + 2 = 4

What is the hidden double in the number sentence 1 + 2?

• 1 + 1

• 2 + 2

• 3 + 3

• 4 + 4