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3rd Grade
Time, Volume & Mass
2015-10-22 www.njctl.org
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· Hour and Half Hour · AM & PM · Elapsed Time · Quarter Hour, 5 Minute and 1 Minute · Measure and Estimate Liquid Volumes · Volume Word Problems · Measure and Estimate Mass · Mass Word Problems
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SLIDE 2 Hour and Half Hour
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What do you know about telling time?
Telling Time Slide 5 / 87
What do you know about telling time? What does the hour hand (little) tell you? What does the minute hand (big) tell you? How much time goes by each time you get to the next number?
Telling Time Slide 6 / 87
SLIDE 3 Put the numbers in the appropriate place. 1 2 3 4 5 6 7 8 9 10 11 12
Telling Time Slide 7 / 87
: : : :
8 00 7 30 What time is it? Write your answers in the box. Then pull down the shade to see if you are correct.
1 2 3 4 5 6 7 8 9 10 12 11 1 2 3 4 5 6 7 8 9 10 12 11
Telling Time Slide 8 / 87
7:00 9:30 Pull down the shade to find a
- time. Move the hands on the
clocks to the match the time in each box.
Telling Time Slide 9 / 87
SLIDE 4 Draw the hour and minute hands on the clocks to match the time.
1 2 3 4 5 6 7 8 9 10 12 11 1 2 3 4 5 6 7 8 9 10 12 11 1 2 3 4 5 6 7 8 9 10 12 11 1 2 3 4 5 6 7 8 9 10 12 11
12:00 5:00 2:30 8:30
Telling Time Slide 10 / 87
1 The clock shows 10:00. True False
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2 Can the minute hand can go all the way up to 100? Yes No
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4
How many minutes does the 6 represent on the clock?
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5 Where should you put the hour hand when showing the time 7:30? A
B between the numbers 6 and 7 C
D between the numbers 7 and 8
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SLIDE 6 Quarter Hour, 5 Minutes and 1 Minute
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When the minute hand moves from one number to the next, 5 minutes pass.
5 Minutes Slide 17 / 87
When the minute hand moves from across 3 numbers, 15 minutes pass.
Quarter Hour Slide 18 / 87
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When the minute hand moves from one mark to the next, 1 minute passes.
One Minute Slide 19 / 87
Click on the button to play a telling time game.
Quarter Hour, 5 Minutes and One Minute Slide 20 / 87
A 2:10 B 1:10 C 1:50 D 2:50 6 What time does this clock show?
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A 6:57 B 11:06 C 6:00 D 11:30 7 What time is shown on the clock?
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A 10:60 B 11:53 C 12:13 D 12:53 8 What time is shown on the clock?
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Yes No 9 Does the clock show 12:45?
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SLIDE 9 Yes No 10 Does this clock show 10:10?
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Elapsed Time
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The time it takes for an activity to start to the time the activity ends is called elapsed time.
Elapsed Time Slide 27 / 87
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Amy needs an hour and 15 minutes to drive from her house to her grandmother's house. If she leaves at 1:00, what time will she reach her grandmother's house? An example of elapsed time is given below. Read the next page for a suggestion on how to solve this problem.
Elapsed Time Slide 28 / 87
Use a clock Set the first clock for 1:00. Use it again to add an hour and 15 minutes. Check yourself by using the digital clock. Set the second clock to 1:00 by using the arrows under the clock. Then see what time you have after adding an hour and 15 minutes.
Elapsed Time Slide 29 / 87
Not all elapsed time problems have you add time. Some might need you to subtract time. As in this example: The paper says your favorite movie ends at 4:45. You know that the movie is 2 hours and 15 minutes long. What time will the movie start? Read the next page for a suggestion on how to solve this problem.
Elapsed Time Slide 30 / 87
SLIDE 11 Use a number line (or a ruler) Find 4:45 on the number line. Use the ruler to subtract 2 hours and 15 minutes. What time is it? ? 1 hour 1 hour 15 minutes 4:45
Elapsed Time Slide 31 / 87
Minute Die Hour Die
- 1. Tap this die to give you your
starting time.
- 2. Press the start and stop to flip the coin.
Heads means to add the hour and minutes
- n the dice to the right. Tails means to
subtract.
Elapsed Time Slide 32 / 87
Click the clock to play an elapsed time game.
Elapsed Time Slide 33 / 87
SLIDE 12
11 3:00 is three hours later than noon. True False
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12 JoAnn has to be home by 5:00. Her friend that lives next door wants her to watch a video that is 30 minutes long. If it is 4:15 now, does JoAnn have enough time? Yes No
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13 Lynda read her book for 20 minutes. If she started reading at 4:52. What time did she finish reading? A 4:72 B 4:12 C 4:32 D 5:12
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SLIDE 13 14 How many minutes pass from 1:10 to 2:00?
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A 5:30 B 5:35 C 6:25 D 6:35 15 If Nick needs 25 minutes to do his homework and his mom will check it at 6:00, what time should he start?
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16 Ana starts eating lunch at 12:15 p.m. She finishes eating lunch 40 minutes later. Which clock shows the time that Ana finishes eating lunch? Select the correct answer. A B C D
From PARCC EOY sample test non-calculator #5
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SLIDE 14 AM and PM
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Here are some examples... Elizabeth is going for a hike in the morning at 7:00. How should she write the time? Keith's soccer game is after school at 3:00. How should he write the time? There are 24 hours in a day. The 12 hours following midnight need an AM following the time and the other 12 hours that follow noon need a PM. What time is midnight? ...noon?
AM and PM Slide 41 / 87
Sometimes an event starts in the AM and ends in the PM. As in this example... We leave for lunch at 11:22 and return to the classroom at 12:49. How would we write both of these times? Can you give an example of the opposite? Meaning an event that starts in the PM and ends in the AM.
AM and PM Slide 42 / 87
SLIDE 15
Tap on the clock to play a AM/PM game.
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17 Midnight and noon are the same thing. True False
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18 What time is dance class after school? A 11:00 AM B 1:00 PM C 5:30 PM D 10:15 PM
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SLIDE 16 19 What time did the thunderstorm wake you up at in the middle of the night? A 3:10 pm B 7:25 pm C 10:00 am D 1:30 am
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20 Is midnight 12:00 pm? Yes No
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21 Does school start at 8:00 AM or PM?
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SLIDE 17 Measure and Estimate Liquid Volume
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Liquid volume (or capacity) is the measure of how much liquid a container can hold.
Measure and Estimate Liquid Volume Slide 50 / 87
The volume of this dropper is 1 milliliter (ml). Have you heard of this measurement? Please give an example.
Measure and Estimate Liquid Volume Slide 51 / 87
SLIDE 18 This test tube holds about 25 ml. The cup and mug both hold about 250 ml.
Measure and Estimate Liquid Volume Slide 52 / 87
How much liquid volume is in each measuring cup?
90 mL 80 mL 70 mL 60 mL 50 mL 40 mL 30 mL 20 mL 10 mL 90 mL 80 mL 70 mL 60 mL 50 mL 40 mL 30 mL 20 mL 10 mL
25 mL 50 mL 75 mL 100 mL
Measure and Estimate Liquid Volume Slide 53 / 87
Yes No 22 Would you use mL to measure the liquid volume of a bathtub?
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SLIDE 19 5 mL 10 mL 15 mL 20 mL 23 How many mL of liquid are in the beaker?
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90 mL 80 mL 70 mL 60 mL 50 mL 40 mL 30 mL 20 mL 10 mL 90 mL 80 mL 70 mL 60 mL 50 mL 40 mL 30 mL 20 mL 10 mL
24 What is the volume of the liquid?
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A 4 mL B 40 mL C 400 mL 25 About how many mL would a soup spoon hold?
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SLIDE 20
Yes No 26 Would 500 mL be a good estimate for the liquid volume of this soup?
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The volume of this measuring cup is 1 liter (L). Have you heard of this measurement? Please give an example. 1,000 mL = 1 L
Measure and Estimate Liquid Volume Slide 59 / 87
All of these containers hold 1 L. This size bottle holds 2 L. Some fish tanks can hold 50 L.
Measure and Estimate Liquid Volume Slide 60 / 87
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Yes No 27 Would 1 Liter be a good estimate for the liquid volume of this shampoo?
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28 Which is the better estimate of the liquid volume of this pot? A 2 mL C 2 lL B 2 L
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A a baby's bottle B a soda can C a bucket D a drinking glass E a large mixing bowl 29 Which TWO containers could hold more than 1 liter?
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SLIDE 22 Yes No 30 Could a bathroom sink hold 10 liters?
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B 75 L C 750 L A 7 L 31 About how many liters can a pool hold?
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32 Gwen pours about 3 liters of water into a container. Select the letter that shows about how much water Gwen poured into the container.
A B C D
From PARCC PBA sample test non-calculator #13
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SLIDE 23 Volume Word Problems
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300 mL - 10 mL = 290 mL George's coffee cup holds 300 mL of coffee. If he took a 10 mL
- sip. How much coffee is left in George's cup?
Volume Word Problems Slide 68 / 87
Florence bought 3 bottles of soda. If each bottle has a liquid volume of 2 L. How much soda does she have in all? 3 bottles x 2 liters each = 6 liters of soda
Measure and Estimate Liquid Volume Slide 69 / 87
SLIDE 24 33 There are 7 jugs of juice on the store's shelf. Each jug holds 3 liters. How many liters of juice are on the shelf in all?
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34 The Smith family used 89 liters of water on Monday, 43 liters on Tuesday and 72 liters on Wednesday. How man liters of water did the Smith family use in those 3 days?
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Measure and Estimate Mass
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Mass is the measure of how much matter an object has.
Measure and Estimate Math Slide 73 / 87 Slide 74 / 87
Objects with more mass are measured with kilograms (kg).
Measure and Estimate Liquid Volume Slide 75 / 87
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A grams B kilograms 35 Which unit would be used to measure the mass of the umbrella?
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36 Which unit would be used to measure the mass of the hat? A grams B kilograms
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37 How many grams do the rolls of coins have?
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38 What is the mass of this duckling?
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A 2 grams B 2 kilograms C 20 kilograms 39 Which estimate is better for the mass of the cat?
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A 3 grams B 30 kilograms 40 Which estimate is better for the mass of the dime?
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SLIDE 28 Mass Word Problems
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A pear has a mass of 203 grams. An apple has a mass of 157 grams. How many more grams is the pear than the apple? 203 grams - 157 grams = 46 grams
Mass Word Problems Slide 83 / 87
2 kg x 3 rabbits = 6 kg A rabbit has the mass of 2 kilograms. If there are 3 rabbits, what is the total mass?
Mass Word Problems Slide 84 / 87
SLIDE 29 41 A snack bag has 48 grams of carrots and 23 grams of
- celery. How many grams of vegetables are in the
bag?
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42 The total mass of 7 quarters is 42 grams. How many grams does each quarter have?
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43 Mrs. Lyles' mass is 68 kg. If she picks up and holds her 13 kg son, what is their total mass?
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