Lesson 23 Day 2

Lesson 23 Day 2

Today's Lesson

Today we will be will exploring

how to estimate the mass of an object.

Before we get started, we will review our focus questions and vocabulary.

Focus Question/ 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.

Estimate the Mass

Jamie bought a bag of flour at the store. Estimate the mass

of the bag of flour.

Picture It

You can use models to help you estimate the mass of an object.

Jamie picked up the two books shown below. Then he picked up the bag of flour.

The books and the bag of flour seemed to have about the same mass.

Open Ended

Lets Talk

How can knowing the mass of one of the books help you figure out the mass of the bag of flour?

How is estimating to find the mass of

an object like estimating to find liquid

volume?

Multiple Choice

Explain why Jamie used the books instead of a paper clips to help him to estimate the mass of the flour.

• It would take too many paper clips to equal the mass of the flour.

• It would take too many books to equal the mass of the flour.

• He should have used a dog to equal the mass of the flour.

Multiple Choice

The mass of each book is about 1 kilogram. Estimate the mass of the bag of flour.

Hint: There are 3 books. Each book is 1 kilogram. 1 x3=

• 1 kilogram

• 2 kilograms

• 3 kilograms

Multiple Choice

Would you estimate the mass of a table using kilograms or grams?

• kilograms

• grams

Multiple Choice

Would you estimate the mass of a comic book using kilograms or grams?

• kilograms

• grams

Multiple Choice

Nick has an orange that has a mass of 220 grams and an apple that has a mass of 110 grams. What is the mass of the orange and apple together?

Hint: The key word is TOGETHER. This means that we will be ________.

• 110 kilograms

• 300 kilograms

• 330 kilograms

Multiple Choice

Jeff had 40 grams of birdseed. He shared it equally among 4 birds. How many grams of bird seed did each bird get?

Hint: The word equally lets us know that we need to divide.

• 36 grams

• 44 grams

• 10 grams

Multiple Choice

Micah's dog has a mass of23 kilograms. Nate's dog has a mass of 8 kilograms. How much greater is the mass of Micah's dog than Nate's?

Hint: The word greater let's us know that we will be subtracting.

• 15 kilograms

• 31 kilograms

• 25 kilpgrams

Multiple Choice

Molly was packing books in a box to send to a friend. The box cannot weigh more than 2kg. If each book has a mass of 200g, what is the maximum number of books she can send?

• 100 books
• 1,000 books
• 10 books
• 1 book

Multiple Choice

Dina is 30 kg. He is 10 kg lighter than Lucy. How heavy is Lucy?

• 20 kg

• 10 kg

• 40 kg

Multiple Choice

Sarah has a mass of 32 kilograms. John is 7 kilograms heavier. What is John's mass?

• 39 kilograms
• 38 kilograms
• 37 kilograms
• 25 kilograms

Multiple Choice

Zack has 100 grams of grapes. If he eats 30 grams of grapes, how much will he have left?

• 7 grams

• 130 grams

• 60 grams

• 70 grams

Multiple Choice

If the block shown were 6 ounces lighter, how much would it weigh?

• 17 oz

• 6 oz

• 5 oz

• 7 oz

Multiple Choice

All of Glinda's magic wands have the same mass. Glinda knows the mass of 1 magic wand (shown below). What is the total mass of 7 magic wands?

• 56 g

• 49 g

• 48 g

• 42 g

Multiple Choice

All pizza slices at Pizza Party Zone have the same mass. Tim buys a pizza that has a total mass of 48 ounces. The pizza has 8 slices. What is the mass of one of the pizza slices on Tim's pizza?

• 5 oz

• 6 oz

• 56 oz

• 40 oz

Multiple Choice

If you have 3 blocks that weigh the same amount. How many total pounds of bricks would you have?

• 18 pounds

• 16 pounds

• 14 pounds

• 12 pounds

Multiple Choice

Which units do we use to measure mass?

• Litres and millilitres.

• Metres and kilometres.

• Grams and kilograms.

• Centimetres and millimetres.

Multiple Choice

What is mass?

• The same as matter.

• The amount of matter inside an object.

• The same as length as capacity.

• The amount of liquid a container can hold.

Multiple Choice

Measure weights with metric units (kilograms)

The baby weighs _______ kg

• The baby weighs 1 kg

• The baby weighs 2 kg

• The baby weighs 3 kg

• The baby weighs 6 kg

Multiple Choice

Measure weights with metric units (kilograms)

The ice bucket weighs .......... kg

• The ice bucket weighs 1 kg

• The ice bucket weighs 3 g

• The ice bucket weighs 2 g

• The ice bucket weighs 3 kg

Multiple Select

Measure weights with metric units (kilograms)

The pumpkin is ______ kg

• The pumpkin is 4 kg

• The pumpkin is 5 kg

• The pumpkin is 6 kg

• The pumpkin is 7 kg

Multiple Choice

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

The lamp weighs ........ the book

• The lamp weighs the same as the book

• The lamp weighs lighter than the book

• The lamp weighs heavier than the book

Multiple Choice

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

The tennis ball weighs ......... the book.

• The tennis ball weighs lighter than the book.

• The tennis ball weighs heavier than the book.

• The tennis ball weighs the same as the book.

Poll

Did you enjoy today's lesson Mass?