# MATH

• WELCOME TO MATH!

Today we will introduce our last metric units of measure for this chapter. WHEW!

Tomorrow we will work with all of the units we have learned, and then we will move on to telling time :)

Okay, so let's get started with the gram and kilogram.

To begin with, it might be helpful to think in terms of what you are already accustomed to.
When we talk about how much something weighs, we typically say it weighs a certain number of pounds or a certain number of ounces. Pounds and ounces are U.S. standard units of measure.
It takes 16 ounces to equal one pound.

Our goal in this section of math is to think in terms of the way other countries measure how heavy something is. I.e., what is the 'metric' term or unit of measure for how much something weighs?

In both the U.S. and other countries, MASS is the term for for how heavy something is.

That is, how much do you weigh?
You can probably answer that question using 'pounds.'
Do you have any idea how much you weigh in metric units of measure? That is, do you know how many kilograms you weigh?

gram (g) is used to measure light objects. If you open your Math textbook to page 278, you will see that a feather might weigh approximatey 1 gram. (Gee, that's not much.)

If you have something heavier to weigh, you might want to use kilograms. Your book shows a picture of a dictionary because it can be used as an example of something which weighs approximately 1 kilogram (kg).

It takes 1000 grams to equal 1 kilogram.

Seems straight forward.
Let's do #s 1 - 6 on page 278. When you think you know the answers, please check them against what I have presented below.

1. bag of potatoes; more than
2.
3. rooster; more than
4. cracker; less than
5.
dog; more than
6.
muffin; less than

How did you do?

GREAT!
Now let's continue with questions 7 - 12 on page 279.
When you think you know the answers, please check them against what I have presented below.

7. computer; kg
8.
comb; g
9. classmate; kg
10.
toothbrush; g
11.
bowling ball; kg
12.
letter; g

GOOD!