By Shelley, Lynn, Matt, and Trevor Mrs' Shott

1
Metric Madness
Why might you need to know the metric system? How
can math help me understand my world?

• By Shelley, Lynn, Matt, and Trevor Mrs. Shott
• 6th period

2
Millimeters and Centimeters

• A millimeter is the length of the period at the
  end of this sentence.
• A centimeter is the length of a raison, or the
  width of your pinky finger.

3
Millimeters and Centimeters

• Millimeter is written mm.
• Centimeter is written cm.
• A millimeter is 0.001 meters (1/1000 meter)
• A centimeter is 0.01 meters (1/100 meter)
• Both measurements are used to measure length.
• Both are used to measure items that are not too
  large.

4
Actual Measuring
width of the structure between the cubby 2.5 cm
length of calculator 14 cm
width of pencil 7mm
thickness of the orange math book 3 cm
5
Problem Solving With Centimeters and Millimeters

• ProblemTwo kids went to the roller rink. One
  was a guy, and the other was a girl. At this
  particular roller skating rink, for some odd
  reason, the guys all have to add 7 centimeters to
  their actual shoe size, and girls have to add 75
  millimeters.
• Can You Solve It?
• If Robs shoe was 260 mm regularly, and Sarahs
  was 30 cm, how much bigger will Sarahs roller
  skates be than Robs? State your answer in
  centimeters and millimeters.

6
Solution To The Problem
To solve the problem, the first thing you need to
do is convert each shoe size to the proper
measurement being used. I changed Robs 260 mm to
26 cm since I was adding cm to it, not mm and I
changed Sarahs 30 cm to 300 mm. I then added the
correct additional measurement required by the
roller rink. Robs shoe ended up being 33 cm, or
330 mm, and Sarahs was 375 mm, or 37.5 cm. I
then subtracted to find out how much bigger
Sarahs shoe was than Robs. The correct answer
is 4.2 cm, 42 mm.
7
Why We Need to Know Millimeters and Centimeters?

• Some items are too small to be measured in feet
  and inches, so we need to know and understanding
  how to use cm and mm.
• To make sure parts fit perfectly together, they
  are made and sold using metric measures. If you
  want to buy the right part at the hardware store,
  you better know your millimeters and centimeters.
• If you ever want custom sunglasses you will need
  to know the width and length in cm.
• In some countries, like Japan, shoes are measured
  using centimeters.
• Pencil lead is made using the mm measurement. If
  you want the right lead, you better know how to
  measure in millimeters.
• If you plan to be an optometrist when you grow
  up, you will need to know these metrics
  measurements.

8
Meters and Kilometers

• Meters
• Written m
• 1000 m 1 km
• 100 cm 1 m
• One meter is the length of 4 world book volumes
  stacked on top of each other.

• Kilometers
• Written km
• 1 km1000 m
• Length of 5 city blocks.

One Meter
9
Actual Measuring
door height 2 m
Table Length 1.81 m
Whiteboard length 2.43 m
trash can height .38 m
map 700 m
10
Problem Solving With Meters and Kilometers
Problem Ben was running a marathon. He has ran
1500 m already. 1 km is about 5 city blocks. The
race was 5.5 km long. Can You Solve It? How
many more blocks does he have to run?
11
Solution To The Problem
First change 5.5 km into 5500 m. Next subtract
1500 from 5500 and you get 4000 m. Change 4000m.
back into 4 km. Then multiply 4 by 5 (blocks) to
get 20. Ben needs to run 20 more blocks.
12
Why We Need to Know Meters and Kilometers
You need these units of measurement to Figure
out travel distance from location to location in
almost every country of the world. Find the
altitude of a plane. Understand distances
related to sporting events because they are
measured using meters and kilometers.
13
Grams and Kilograms

• A gram is written as g.
• There are 1,000 milligrams in a gram
• A gram has a mass of a jellybean

• A kilogram is written as kg.
• There are 1,000 grams in one kilogram
• A kilogram has a mass of a cantaloupe

14
Actual Measuring
1 Cantaloupe is equal to 1 kilogram.
1 jellybean is equal to 1 gram.
15
Problem Solving With Grams and Kilograms
Problem Mike is having an Easter egg hunt. He
buys 300 plastic eggs all together. Some eggs
hold 5 grams of jellybeans. Some egg hold 10
grams of jellybeans. Mike purchased 2 kilograms
of jellybeans to fill the eggs. Can You Solve
It? How many 5 gram-size plastic eggs did Mike
buy, and how any 10 gram-size plastic Easter eggs
did Mike buy?
16
10 gram Easter egg
5 gram Easter egg
Jellybeans (5)
Jellybeans (10)
17
Solution To The Problem
18
Why We Need to Know Grams and Kilograms

• To know how much fat and sodium is in our food
  and understand other nutritional facts found on
  food labels
• To figure out the total price we will need to pay
  for produce or other items that are sold by price
  per gram.
• So that we know just how much weight we have
  gained or lost between hospital or doctors
  office visits.

19
Liter and Celsius

• Liter is written as l
• Celsius is written C
• 1 liter is the same as half of a 2 liter bottle
  of soda
• Celsius is the system countries outside of the US
  use to measure temperature

20
Actual Measuring
This holds 250 Milliliters
0o Celsius 50 Celsius
21
Problem Solving With Liters

• Problem
• Kristi is irrigating her garden. She needs
  100.25 kiloliters of water. She uses 30,000
  liters of water.
• Can You Solve It?
• Will that much water be enough?

22
Problem Solving With Celsius

• ProblemMary has a thermometer on her front
  porch. She checked it every day for four days.
  The first day the temperature was 20C, the
  second day the temperature was 25C, the third
  day the temperature was 27C, the fourth day the
  temperature was 24C.
• Can You Solve It?What was the average
  temperature for the four days?

23
Solution To The Problems

• Problem 1- Since Kristi needs 100.25 kiloliters
  of water she didnt use enough. To find the
  answer you multiply 100.25 by 1000 because there
  are 1000 liters in a kiloliter. Kristi only used
  30,000 liters when she needed 100,250 liters of
  water.
• Problem 2- To find the average temperature of
  the four days you add together the four
  temperatures from the four days. 20252724
  96. Then you divide by the number of temperatures
  you have (4) and you get the average temperature.
  96/4 24 The average temperature for the 4
  days is 24C.

24
Why We Need to Know Liters and Celsius

• The Celsius degree is commonly used among
  scientists.
• In most of the other parts of the world Celsius
  is the main unit of temperature.
• Liters are used in the medical field and among
  scientists.
• Liters are also very common in the United States
  and other parts of the world.
• In order to know just how much of any liquid
  medicine to take, you need to know how to measure
  in milliliters.

25
How Do We Measure Up?
Shelleys smile is 7 cm long. The shoulder widths
for Lynn, Matt, and Shelley range from 30-36 cm.
Trevors legs are about 77 cm long. Lynn weighs
47 kilograms.
26
How Can Math Help Me Understand My World?

• Math is everywhere and in order to really
  understand the world, you need to know math.
• Measurement is math and measurement is everywhere
  as well.
• Every time you read a food label, follow a
  recipe, watch the weather report, print out
  driving directions, hop on the scale, or
  participate in a sporting event math and
  measurement are involved.
• Understanding math and measurement can help you
  figure out or make decisions like
• whether or not you are getting enough vitamins
  and minerals in your diet
• how to double a recipe
• what clothes you should wear based on the outdoor
  temperature
• whether or not you have a fever
• How much further you have to go before you arrive
  at your destination
• Which golf club you should use on your next shot
  
• If you understand math and measurement, life and
  the world around you is so much easier to figure
  out!