MEASURING STANDARD AND METRIC

CUBIT Cubit: In ancient Egypt, a cubit was the distance from the elbow to the fingertips. Today a cubit is about 18 inches.

WHOSE CUBIT DO WE USE

CONSIDER THE FOOT This is where the “Ruler” got it’s name. Foot: In ancient times, the foot was 111/42 inches. Today it is 12 inches, the length of the average man's foot. This is where the “Ruler” got it’s name.

Where did the inch come from? Inch: At first an inch was the width of a man's thumb. In the 14th century, King Edward II of England ruled that 1 inch equalled 3 grains of barley placed end to end lengthwise.

The first to standardize were the Romans 1 mile is 1000 double steps by marching roman troops

The yard, foot and inch 1 YARD 3 FEET 36 INCHES King Edward

ACRE 1 ACRE

FURLONG 1 FURLONG IS THE LENGTH OF A FURROW PLOWED ACROSS A 10 ACRE FIELD WHICH IS 220 YARDS 24 FURLONGS 5280 FEET

LETS REVIEW 36 inches 3 feet King Edward 1 yard 1 furlong = 220 yards The English System 36 inches 3 feet King Edward 1 yard 1 furlong = 220 yards 1 mile 5280 feet 24 furlongs

CREATED BY FRENCH SCIENTISTS IN THE 1790 METRIC SYSTEM CREATED BY FRENCH SCIENTISTS IN THE 1790

METER THE METER IS 1,670,763.73 WAVE LENGTHS OF A SPECTRAL YELLOW LIGHT EMITTED BY KRYPTON GAS. 1 METER

METER CENTIMETER MILLIMETER CFGNFG There would be 10 millimeter lines between each of the small centimeter lines

KILOMETER

HECTOMETER

DECAMETER MILLIMETER 1000 th CENTIMETER 100 th DECIMETER 10 th METER 1 HECTOMETER 100 KILOMETER 1000

WHICH ONE IS EASIER? MILLIMETER 1000 th CENTIMETER 100 th DECIMETER 10 th METER 1 DECAMETER 10 HECTOMETER 100 KILOMETER 1000 How many millimeters in a kilometer? INCH 1 FEET 12 YARD 3 MILE 1760 How many inches in a mile?

WHY DO WE NEED TO KNOW THE METRIC SYSTEM?