Understanding Scale Drawings and Ratios

The video tutorial covers the concept of scale drawing, starting with an introduction to using scales in drawings. Students are encouraged to try drawing independently before the teacher explains the book's method using a number line. The session includes an analysis of how different scales relate to each other, followed by a reflection on learning strategies. Finally, students apply their knowledge to solve practice problems, reinforcing the concepts taught.

What was the original scale used in the drawing before it was changed?

• 5 meters to 2 centimeters

• 6 meters to 1 centimeter

• 5 meters to 1 centimeter

• 10 meters to 1 centimeter

How does the book suggest converting scales using a number line?

• By adding the scale factor

• By subtracting the scale factor

• By multiplying the scale factor

• By using a number line to divide the scale factor

What is the new scale ratio after conversion?

• 3 to 1

• 6 to 1

• 5 to 1

• 4 to 1

How are the original and new scales related?

• The original is larger by a factor of 2

• The original is 6 to 5 compared to the new

• They are unrelated

• The new is 6 to 5 compared to the original

What is the definition of a scale drawing?

• A drawing with the same size as the original

• A drawing with different sizes but equivalent ratios

• A drawing with no relation to the original

• A drawing with larger dimensions than the original

What strategy was suggested to better understand the scale drawing problem?

• Using a calculator

• Drawing freehand

• Reflecting on models and strategies discussed

• Ignoring the scale factor

What is the scale factor for the new drawing in the practice problems?

• 8

• 12

• 20

• 5

How do you justify the accuracy of a new scale drawing?

• By ensuring the ratios remain equivalent

• By making the drawing larger

• By ignoring the original scale

• By using a different scale factor

What is the reduced ratio from the old drawing to the new drawing?

• 3 to 4

• 5 to 6

• 3 to 5

• 4 to 5

What should you do after completing the practice problems?

• Submit them to the teacher

• Upload them to Canvas

• Ignore them

• Redo them