Exploring Percent Increase and Decrease with Double Number Lines

The video tutorial introduces Sedona's awesome map network and demonstrates how to use double line graphs to solve percentage-related questions. The example problem involves determining the original capacity of a cereal box after a 20% increase. The instructor explains the process of using a double line graph to visualize the problem, calculate percentages, and find the original amount. Alternative methods for solving the problem are also discussed, providing a comprehensive understanding of percentage increase and decrease. The lesson concludes with a recap of the key concepts covered.

What is the main topic discussed in today's session?

• Using bar graphs to solve percentage questions

• Using double line graphs to solve percentage questions

• Using pie charts to solve percentage questions

• Using histograms to solve percentage questions

What percentage increase is mentioned in the problem statement?

• 20%

• 25%

• 15%

• 10%

What is the new capacity of the cereal box in ounces?

• 120 ounces

• 108 ounces

• 100 ounces

• 90 ounces

Why did the instructor count by 20s on the double line graph?

• Because 20 is a round number

• Because the increase was 20%

• Because it makes the graph look better

• Because it was a random choice

How many notches are there for the percentage increments on the graph?

• 4

• 7

• 5

• 6

What does 120% represent in terms of ounces?

• 120 ounces

• 108 ounces

• 180 ounces

• 90 ounces

What is the original capacity of the cereal box in ounces?

• 72 ounces

• 80 ounces

• 90 ounces

• 100 ounces

What is the value of 20% in ounces?

• 24 ounces

• 22 ounces

• 20 ounces

• 18 ounces

What is the alternative method to find the original capacity?

• Adding 18 ounces to 108 ounces

• Multiplying 108 ounces by 0.2

• Subtracting 18 ounces from 108 ounces

• Dividing 108 ounces by 2

What is the key takeaway from the session?

• Learning to solve algebraic equations

• Learning to visualize percentage changes using double line graphs

• Understanding how to use bar graphs

• Knowing how to create pie charts