Topic 18 3 rd Grade Created 2012. Volume 18-1 You have already learned how to measure the area of...

Topic 18

3rd Grade

Created 2012

Volume

• You have already learned how to measure the area of plane (2-D) figures. Today you will learn how to measure the amount of space inside solid (3D) figures.

Customary Units of Capacity

• You have already learned how to measure the volume of solid figures. Today you will learn how to measure how much a container holds.

• This container holds about a cup. What other containers hold about one cup?

• Pint?

• Quart?

• Gallon?

Capacity

• The amount of liquid a container will hold

• 1 cup (c)= school milk

• 1 pint (pt)= small ice cream

• 1 quart (qt) = orange juice carton

• 1 gallon (gal)= gallon of milk

• 2 cups = 1 pint

• 2 pints = 1 quart

• 4 quarts = 1 gallon

Let’s Practice!

Choose the best estimate

A. 1 c

B. 1 qt

A. 3 pt

B. 3 gal

A. 1 pt

B. 1 gal

A. 1 c

B. 1 pt

A. 1 c

B. 1 pt

A. 2 pt

B. 2 qt

A. 22 c

B. 22 qt

Kitchen sink

A. 1 c

B. 1 qt

Water glass

A. 1 c

B. 1 qt

Baby bottle

A. 3 c

B. 3 qt

Tea kettle

Tea cup

Pitcher of juice

Which measurement best describes the capacity of a

bathtub?

A. 50 cups

B. 50 quarts

C. 50 gallons

D. 50 pints

Which of the objects below holds about 1 pint?

A. Can of soup

B. Punch bowl

C. Gas tank

D. pool

Which is NOT a customary unit used to measure capacity?

A. pint

B. cube

C. quart

D. gallon

Which of these objects probably holds about 1 pint?

A. Bath tub

B. barrel

C. Dog bowl

D. Tea spoon

Which measurement best describes the capacity of a juice

box you might bring with your lunch?

A. 1 cup

B. 1 pint

C. 1 quart

D. 1 gallon

Units of Weight

• You have learned how to measure the capacity of a container. Today you will learn how to measure how heavy an object is.

• What objects could be about as heavy as this textbook?

• The weight of an object is a measure of how heavy the object is or how strong gravity is pulling down on an object.

Weight

• a measure of how heavy the object is or how strong gravity is pulling down on an object.

• 1 ounce (oz) weighs about

the same as one slice of bread

• 1 pound (lb) weighs about the

same as a loaf of bread

• 1 ton (T) weighs about the

same as a small car

• 16 ounces = 1 pound

• 2,000 pounds = 1 ton

How much does this weigh?!

A. 1 oz

B. 1 lb

A. 6 oz

B. 6 lb

A. 10 oz

B. 10 lb

A. 300 lb

B. 300 T

A. 200 lb

B. 2 T

A. 2 oz

B. 2 lb

A. 1 oz

B. 1 lb

A cracker

A. 30 oz

B. 30 lb

Television set

A. 5 oz

B. 5 lb

Baseball hat

A. 30 lb

B. 3 T

elephant

Student desk

bicycle

Which animal weighs about 1 ton?

A. Squirrel

B. Giraffe

C. Wolf

D. Monkey

Which animal weighs about 1 ounce?

A. fox

B. lamb

C. mouse

D. kangaroo

Which is the best estimate for the weight of a stove?

A. 250 ounces

B. 250 pounds

C. 250 tons

D. 250 feet

Metric Units of Capacity

• You have learned how to find the capacity of containers using customary units. Today you will learn how to find the capacity of containers using metric units.

• Milliliter (mL) = 20 drops from eyedropper

• Liter (L) = big water bottle

• 1,000 milliliters = 1 liter

Let’s practice!

Choose the better estimate.

A. 250 mL

B. 2 L

A. 5 mL

B. 1 L

A. 40 mL

B. 40 L

A. 15 mL

B. 1 L

A. 14 mL

B. 14 L

A. 250 mL

B. 250 L

A. 150 mL

B. 15 L

Tea cup

A. 115 mL

B. 115 L

bathtub

A. 3 mL

B. 3 L

Bottle cap

A. 1 L

B. 10 L

teapot

Soup can

Water pitcher

Swimming pool

Baby bottle

Which measurement best describes the capacity of a can

of paint?

A. 4 mL

B. 4 L

C. 40 L

D. 40 mL

Which container holds more than 1 liter?

A. Fish tank

B. Baby’s cup

C. Cereal bowl

D. Bottle of perfume

Which measurement best describes the capacity of a

punch bowl?

A. 6 mL

B. 60 mL

C. 6 L

D. 60 L

Units of Mass

• You have learned how to measure the weight of an object using customary units of measure. Today you will learn how to measure the mass of an object using metric units.

• What other objects have about the same amount of matter as a dollar bill?

• The mass of an object is a measure of the amount of matter in an object.

• 1 gram (g) = mass

as a paperclip

• 1 kilogram (kg) = mass as a baseball bat

• 1,000 grams = 1 kilogram

• This textbook has a mass of about 1 kilogram. How can you use this information to determine whether a stapler has a mass greater than or less than 1 kilogram?

• How can knowing the mass of the book help you estimate the mass of the stapler?

• Is the mass of the stapler more or less than a kilogram?

What is the mass?!

A. 5 g

B. 5 kg

What is the mass?!

A. 40 g

B. 4 kg

What is the mass?!

A. 100 g

B. 10 kg

What is the mass?!

A. 15 g

B. 15 kg

What is the mass?!

A. 4 g

B. 400 g

What is the mass?!

A. 400 g

B. 4 kg

Bag of oranges

What is the mass?!

A. 2 kg

B. 12 kg

Bicycle

What is the mass?!

A. 1 g

B. 1 kg

feather

What is the mass?!

A. 5 kg

B. 550 kg

What is the mass?!

A. 3 g

B. 300g

What would this tool measure?

A. Capacity of a glass

B. Temperature of water

C. Length of a box

D. Weight of a pear

E. Length of time you sleep

C. Length of a box

D. Weight of a pear

C. Length of a box

D. Weight of a pear

C. Length of a box

D. Weight of a pear

C. Length of a box

D. Weight of a pear

Which measurement best describes the mass of a rabbit?

A. 2 grams

B. 2 kilograms

C. 2 liters

D. 2 meters

Which would you use to describe the mass of a

watermelon?

A. 4 grams

B. 4 liters

C. 4 kilograms

D. 4 meters

Which measure would best describe the mass of a dime?

A. 2 grams

B. 2 meters

C. 2 liters

D. 2 ounces

Jerry’s math book has a mass of 1 kilogram and 374 grams. Which is another way to express this mass?

A. 1,374 kilograms

B. 1,374 grams

C. 3,740 grams

D. 374,000 grams

Topic 18 3 rd Grade Created 2012. Volume 18-1 You have already learned how to measure the area of...

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