Understanding Scale Factor

This video tutorial introduces the concept of scale factor, explaining it as a ratio comparing scaled measurements to actual measurements. It uses examples of triangles to illustrate how scale factors greater than one enlarge objects, while those less than one reduce them. The video provides practical examples, such as calculating the dimensions of a model car and sketching a ladybug, to demonstrate the application of scale factor in real-world scenarios. The tutorial emphasizes the importance of unit conversion when working with scale factors.

What is a scale factor?

• A ratio comparing scaled to actual measurements

• A type of triangle

• A mathematical operation

• A unit of measurement

If a scale factor is greater than one, what happens to the size of the object?

• It remains the same

• It becomes larger

• It becomes smaller

• It changes shape

What is the scale factor if a triangle is reduced to half its original size?

• Three

• One half

• One

• Two

In the model car example, what is the first step in finding the scaled dimensions?

• Draw the model car

• Find the scaled measurement in feet

• Determine the scale factor

• Convert feet to inches

How do you convert feet to inches in the model car example?

• Multiply by 12

• Add 12

• Divide by 12

• Multiply by 10

What is the scaled length of the model car in inches?

• 12 inches

• 9 inches

• 6 inches

• 3 inches

What is the scale factor used in the ladybug example?

• One to twenty-four

• Twenty-four to one

• Twelve to one

• One to twelve

How do you convert millimeters to centimeters in the ladybug example?

• Multiply by 100

• Divide by 10

• Multiply by 10

• Add 10

What is the scaled length of the ladybug in centimeters?

• 8.4 cm

• 9.6 cm

• 7.2 cm

• 6.8 cm

What is the scaled width of the ladybug in centimeters?

• 5.2 cm

• 3.6 cm

• 2.4 cm

• 4.8 cm