Exploring Fraction Problem Solving with Bar Models

This video tutorial by Mr. Math Blog covers problem-solving with fraction operations, focusing on using bar models to solve division problems. The lesson includes understanding how to take half of a fraction by doubling the denominator and applying this knowledge to solve word problems involving gorp and a science experiment. The tutorial emphasizes using visual models to aid comprehension and provides step-by-step solutions to the problems presented.

What is the equivalent of taking half of 20?

• 20

• 15

• 10

• 5

How do you find half of a fraction?

• Subtract 1 from the denominator

• Multiply the fraction by 1/2

• Divide the fraction by 2

• Add 1 to the numerator

What is the result of 1/2 multiplied by 1/2?

• 1/2

• 1/16

• 1/8

• 1/4

What does GORP stand for?

• Granola, Oats, Raisins, and Pretzels

• Grapes, Oranges, Raisins, and Peanuts

• Good Old Raisins and Peanuts

• Granola, Oats, Raisins, and Peanuts

How many days did Bob take GORP to school if he started with 3/4 of a pound and took 1/8 of a pound each day?

• 5 days

• 4 days

• 3 days

• 2 days

How much GORP did Bob have left over?

• 3/4 of a pound

• 1/2 of a pound

• 1/4 of a pound

• 1/8 of a pound

How many containers did Mrs. Nelson fill if she started with 2/3 of a cup of salt and each container held 1/12 of a cup?

• 4 containers

• 5 containers

• 6 containers

• 7 containers

What was the leftover amount of salt Mrs. Nelson had?

• 1/8 of a cup

• 1/6 of a cup

• 1/4 of a cup

• 1/12 of a cup

If Mrs. Nelson started with 1 and 2/3 cups of salt, how many containers would she fill?

• 15 containers

• 20 containers

• 12 containers

• 18 containers

What is the expression to find how many containers Mrs. Nelson filled if she started with 2/3 cups of salt and had 1/6 cup left over?

• (2/3 - 1/6) / 1/12

• (2/3 + 1/12) / 1/6

• (2/3 - 1/12) / 1/6

• (2/3 + 1/6) / 1/12