 How many people use it worldwide?

 billion people use it every day,

 Which countries don’t use it?

 Us…(United States)…..of course

 What kind of things do we buy that already use the metric system.

 cola in liters  video tape and film in millimeters,  lightbulbs in watts,  and aspirin in milligrams

 The metric system is based on decimal arithmetic, just like dollars and cents

 Diving off the 10-meter diving platform is similar to………

 to diving from the roof of a three-story building

 Basketball players slam dunk in a net measuring 45 centimeters in diameter……about _________ the diameter of the ball.

 Competitors in one of our most popular recreational road races, "the 5K," run 5 kilometers, which is longer than _______ football fields.

 54 football fields…..put end to end.

 Those bicycle racers that complete the grueling Tour de France will have ridden about 3800 kilometers which is like..

 Like almost the straight-line distance from New York to Phoenix.

 Gymnastic floor exercises are performed on a mat measuring 12 by 12 meters, which is like about ____ the are of a basketball court.

Turn to your partner....and deliberate this?

 Female gymnasts execute precise movements on a balance beam that is only 10 centimeters wide, which is like the size of a ……

10 centimeters  paperback novel.

 The rings in men's gymnastics are placed 250 centimeters off the floor…..which is like the height of a …………..

250 cm  a standard ceiling

 The stars of beach volleyball can jump about 75 centimeters off the sand which is like

 Like about the height of a Great Dane at its shoulders

 How much mass is things?

The metric system has prefix modifiers that are multiples of 10.

 How much mass is it?

 A kilogram is 1000 grams  A hectogram is 100 grams  A decagram is 10 grams  A gram is the stem unit of mass  A decigram is 1/10 gram  A centigram is 1/100 gram  A milligram is 1/1000 gram

 As we move down the units, the next unit is one tenth as heavy. As we move upward, each unit is 10 times as heavy. One hundred milligrams, which is 1/10 gram (100/1000=1/10) are heavier than one centigram (1/100th gram).

 A meter is about the same length as a yard  A meter is about three feet long  A decimeter is about four inches long  An inch is about 25 millimeters  A foot contains about 30 centimeters  A foot contains about 3 decimeters

 A kiloliter is 1000 liters  A hectoliter is 100 liters  A decaliter is 10 liters  A liter is the basic unit of volume  A deciliter is 1/10 liter  A centiliter is 1/100 liter  A milliliter is 1/1000 liter