Lesson 22 Day 1

Lesson 23 Day

Mass

Open Ended

Focus/ Essential Questions

How do we choose the appropriate unit of measurement? What is mass?

Vocabulary

• mass the amount of matter in an object;

  measuring the mass of an object is one

  way to measure how heavy it is. Units of

  mass include the gram and kilogram.

• gram a unit of mass in the metric system;

  a paper clip has a mass of about 1 gram.

  1,000 grams is equivalent to 1 kilogram.

• kilogram a unit of mass in the metric

  system; 1 kilogram is equivalent to

  1,000 grams.

Multiple Choice

Look at the following scales and fill in the blanks with “heavier than”, “lighter than” or “the same as”.

The pencil case weighs ____________ the apple.

• The pencil case weighs heavier than the apple.

• The pencil case weighs lighter than the apple.

• The pencil case weighs same as the apple.

Open Ended

Bristol has a measuring cup, a scale, and a bowl. How can she find out how heavy the bowl is?

Lesson 23 Mass

Think about measuring the liquid volume of the bowl. Explain how you could do this.

Open Ended

What do you know about the bowl if you know its liquid volume?

Multiple Choice

What tool can Bristol use to find out how heavy the bowl is?

Open Ended

Explain how Bristol could find out how heavy the bowl is.

Find Out More

When you describe how heavy something is, you are describing its mass. Two units used when measuring mass are gram and kilogram.

The mass of a paper clip is about 1 gram.

Find Out More

1 kilogram is the same as 1,000 grams. So, an object with a mass of 1 kilogram is about as heavy as 1,000 paper clips.

The mass of a wooden baseball bat or a large hardcover book is also about 1 kilogram.

Find Out More

The picture shows different types of scales you can use to measure mass.

Open Ended

Elena’s brother says the family dog has a mass of 30 grams. Elena says the dog has a mass of 30 kilograms. Who do you think is correct? Why do you think so?

Multiple Choice

Nikita borrows 1 superhero book and 1 dragon book from the library. The superhero book has a mass of 200 grams. The dragon book has a mass of 310 grams. What is the mass of the books Nikita borrowed?

• 510

• 110

• 210

• 410

Multiple Choice

Jamie’s snack had 4 grams of fat. The amount of protein was 8 times that amount. How many grams of protein did her snack have?

• 16g

• 32g

• 12g

• 4g

Multiple Choice

What is the amount of matter in an object;

measuring the mass of an object is one

way to measure how heavy it is. Units of

mass include the gram and kilogram.

• volume

• capacity

• mass

Multiple Choice

a unit of mass in the metric system;

a paper clip has a mass of about 1 gram.

1,000 grams is equivalent to 1 kilogram.

• gram

• kilogram

• pounds

Multiple Choice

What is a unit of mass in the metric system; 1 kilogram is equivalent to

1,000 grams.

• gram

• kilogram

• pound

Poll

Did you enjoy the introduction to the lesson on Mass? Please select one of the following responses.