Scale Factor and Area Problems

The video tutorial explores the concept of scale factors and their impact on area. It begins with a discovery about increasing area using blocks and triangles, revealing a pattern where the area increases by the square of the scale factor. The tutorial then demonstrates calculations for different scale factors, including fractional ones, showing how the area changes. The lesson concludes with a recap and contact information for further assistance.

What did the child discover about increasing the area using blocks?

• The area doubles with each additional block.

• The area increases by the square of the scale factor.

• The area remains the same regardless of the scale factor.

• You need twice as many blocks as the scale factor.

What pattern is observed when increasing the area by a scale factor?

• The area remains constant.

• The area increases by the square of the scale factor.

• The area increases linearly with the scale factor.

• The area decreases as the scale factor increases.

If the original area is 36 units squared, what is the new area with a scale factor of 2?

• 72 units squared

• 64 units squared

• 144 units squared

• 108 units squared

How many blocks are needed to increase the area by a scale factor of 3?

• 6 blocks

• 12 blocks

• 9 blocks

• 15 blocks

What is the area when the scale factor is 5 and the original area is 36 units squared?

• 180 units squared

• 900 units squared

• 720 units squared

• 625 units squared

How does the area change when the scale factor is less than one?

• The area increases.

• The area decreases.

• The area remains the same.

• The area doubles.

What is the area when the scale factor is 1/2 and the original area is 36 units squared?

• 9 units squared

• 18 units squared

• 12 units squared

• 6 units squared

What is the area when the scale factor is 2/3 and the original area is 36 units squared?

• 24 units squared

• 16 units squared

• 20 units squared

• 12 units squared

What should you do if you have questions about the lesson?

• Search online.

• Ask a friend.

• Email the teacher.

• Wait until the next class.

What is the teacher's preferred method of communication for questions?

• Google Hangouts

• In-person meeting

• Social media

• Phone call