3.1: Width of a Paper
Your teacher will show you two rods. Does it take more green rods or blue rods lined up end to end to measure the width of a piece of printer paper?
Let’s measure things.
Your teacher will show you two rods. Does it take more green rods or blue rods lined up end to end to measure the width of a piece of printer paper?
Station 1
cubic inches | cubic centimeters | |
---|---|---|
volume of the box |
Station 2
meters | feet | |
---|---|---|
length of ______________________ |
Station 3
Watch the video. How many times can a quart bottle be filled from a gallon jug? How many times can a liter bottle be filled from a gallon jug?
quarts and liters from Open Up Resources on Vimeo https://vimeo.com/184901230.
quarts | liters | |
---|---|---|
1 gallon of water |
Station 4
Use the applet to record the weights of different objects in different units.
Record their weights in ounces, pounds, grams, and kilograms.
object to weigh | ounces | pounds | grams | kilograms | |
---|---|---|---|---|---|
object 1 | |||||
object 2 | |||||
object 3 |
Station 5
milliliters | teaspoons | |
---|---|---|
volume of salt | 20 | |
volume of salt | 40 | |
volume of salt | 50 |
After you finish all five stations, answer the following questions with your group.
Use the data from Station 4 to put the units of weight and mass in order from smallest to largest. Explain your reasoning.
People in the medical field use metric measurements when working with medicine. For example, a doctor might prescribe medication in 10 mg tablets.
Brainstorm a list of reasons why healthcare workers would do this. Organize your thinking so it can be followed by others.
The size of the unit we use to measure something affects the measurement.
If we measure the same quantity with different units, it will take more of the smaller unit and fewer of the larger unit to express the measurement. For example, a room that measures 4 yards in length will measure 12 feet.
There are 3 feet in a yard, so one foot is $\frac13$ of a yard.