Rotations (Identify the relationship between two numerical patterns derived from descriptions/rules in problems and grap

What is the rotation rate of the ceiling fan?

• 20 times per second

• 5 times per second

• 10 times per second

• 15 times per second

What rule generates the pattern for the fan's rotation?

• Subtract 5

• Multiply by 2

• Add 5

• Add 10

How many times does the washing machine drum rotate per second?

• 5 times

• 10 times

• 15 times

• 20 times

What is the relationship between the fan's and the washing machine's rotations?

• The fan rotates twice as fast as the washing machine

• The washing machine rotates twice as fast as the fan

• Both rotate at the same speed

• The fan rotates three times as fast as the washing machine

If the washing machine made 70 rotations, how many rotations did the fan make?

• 35

• 70

• 140

• 50

What mathematical operation helps find the fan's rotations from the washing machine's rotations?

• Addition

• Subtraction

• Multiplication

• Division

What is the key concept learned in this lesson?

• How to add rotations

• Understanding the relationship between two patterns

• How to subtract rotations

• Understanding the speed of a washing machine