Walking to School (Solve multiplicative comparison word problems involving finding the size of the group using bar model

The video tutorial explains how to determine the walking distance from Sarah's house to school using bar models. It introduces the problem of comparing Sarah's and Lily's walking distances, with Lily's being three times longer. By constructing a bar model, the tutorial demonstrates how to represent and solve the equation to find Sarah's distance, which is 300 feet. The lesson concludes with a summary of using bar models for solving multiplicative comparison problems.

What is the relationship between the distances Sarah and Lily walk to school?

• Lily walks three times the distance Sarah does.

• Sarah and Lily walk the same distance.

• Lily walks twice the distance Sarah does.

• Sarah walks three times the distance Lily does.

What is the unknown variable in the problem, and how is it represented?

• The distance from Sarah's house to school, represented as D.

• The distance from Lily's house to school, represented as L.

• The time it takes to walk, represented as T.

• The total distance both walk, represented as T.

How is the bar model for Lily's distance constructed?

• Using the bar model for Sarah's distance three times.

• Using the bar model for Sarah's distance once.

• Using the bar model for Sarah's distance twice.

• Using the bar model for Sarah's distance four times.

What equation is used to find the distance Sarah walks?

• D + 900 = 3

• 3 * D = 900

• D = 900 / 2

• 2 * D = 900

How far does Sarah walk to school every day?

• 400 feet

• 200 feet

• 300 feet

• 900 feet