standard_description: Make a line plot to display a data set of measurements in fractions of a unit (1/2, 1/4, 1/8). Use operations on fractions for this grade to solve problems involving information presented in line plots. For example, given different measurements of liquid in identical beakers, find the amount of liquid each beaker would contain if the total amount in all the beakers were redistributed equally.
problem_activity: Problem 1
Act 1: Watch the video
The Orange (Act-1)
.
a.   What do you notice? What do you wonder?
b.   How many linking cubes will it take to even out the balance scale? Make an estimate.
Problem 2
Act 2: Use the following information to determine how many cubes it will take until the balance is level with the orange -
[IMG]
[IMG]
Problem 3
Act 3: Watch
The Orange (Act-3)
. Was your answer reasonable? Why or why not?
Problem 4
Act 4 (the sequel):
a.   Jessica puts 28 grams of pinto beans and 36 grams of rice into a pot to make rice and beans. What is the total mass of the rice and beans?
b.   Lindsey bought 845 grams of potatoes at the grocery store. She uses some of them to make mashed potatoes. She now has 392 grams of potatoes left. How many grams of potatoes did Lindsey use to make the mashed potatoes?
c.   Jerry buys 6 bags of groceries. Each bag has a mass of 4 kilograms. What is the total mass, in kilograms, of Jerry’s grocery bags?


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