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USING THE SCIENCE OF COMPUTATION

USING THE SCIENCE OF COMPUTATION. AGRISCIENCE/TECHNOLOGY. Modified by Georgia Agricultural Education Curriculum Office . July, 2002. AREAS OF COMPUTATION IN AGRISCIENCE.

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USING THE SCIENCE OF COMPUTATION

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  1. USING THE SCIENCE OF COMPUTATION AGRISCIENCE/TECHNOLOGY Modified by Georgia Agricultural Education Curriculum Office July, 2002

  2. AREAS OF COMPUTATION IN AGRISCIENCE • MEASUREMENT : Involves determining the number of units in something; a foot is 12 inches long or a bushel of shelled corn is always 56 pounds. • MATHEMATICS : Involves the use of numbers and symbols to show relationships. • Made up of two areas- skills and applications

  3. WHY STANDARDS OF MEASUREMENT ? • Buyers and sellers must have the same standard when trading. • Persons mixing chemicals need to use the same standard that is given in the mixing instructions. • People who make products need to use the same standards.

  4. MEASUREMENT SYSTEMS • CUSTOMARY SYSTEM -Inch, foot, yard, mile, ounce, pound, quart, pint, gallon and acre are examples. • METRIC SYSTEM - Grams, meters, liters are examples. Based on decimal system that increases or decreases by numbers by 10s. Uses prefix (“centi”) to meter to form centimeter (1/100 of a meter)

  5. LINEAR MEASUREMENT • IT IS THE DISTANCE BETWEEN TWO POINTS. • EXAMPLES : • 1 FOOT = 12 INCHES • 1 YARD = 3 FEET OR 36 INCHES • 1 MILE = 5,280 FEET

  6. AREA • IT IS THE MEASUREMENT OF SURFACES • EXAMPLES : • LAND • FLOOR SPACE IN A GREENHOUSE • REPORTED IN SQUARE FEET OR SQUARE METERS

  7. VOLUME • IT IS THE TOTAL SIZE OF AN OBJECT. • IT IS THE TOTAL AMOUNT OF SPACE SOMETHING TAKES OR HOLDS. • RECORDED IN CUBIC FEET OR CUBIC METERS

  8. WEIGHT • WEIGHT IS THE HEAVINESS OF SOMETHING; RELATED TO GRAVITY WHICH IS THE PULL OF THE EARTH. • MEASURED IN POUNDS OR MASS IN KILOGRAMS

  9. TEMPERATURE • REFERS TO HOW HOT OR COLD SOMETHING IS; MEASURED WITH A THEROMETER. • FAHRENHEIT SCALE : WATER BOILS AT 212 AND FREEZES AT 32. • CELSIUS SCALE : WATER BOILS AT 100 AND FREEZES AT 0.

  10. TIME • EACH DAY IS COMPRISED OF 24 HOURS, EACH HOUR IS MADE UP OF 60 MINUTES AND EACH MINUTE OF 60 SECONDS. • BASED ON THE ROTATION OF THE EARTH

  11. INSTRUMENTS USED IN LINEAR MEASUREMENTS • MEASURING STICKS • TAPE MEASURES • CHAINS • CALIPERS • REMOTE MEASUREMENT • THICKNESS GAUGE

  12. WAYS THAT LINEAR MEASUREMENT IS USED • MARKETING • PLANTING RATES • CHEMICAL USE • LAND MEASUREMENTS

  13. AGRISCIENTISTS USE FIVE SHAPES • SQUARE: AREA=L X W • RECTANGLE : A = L X W • TRIANGLE : A = B X H DIVIDED BY 2 • TRAPEZOID : A = B + B DIVIDED BY 2 X H • CIRCLE : R SQUARED X 3.14

  14. LAND AREA • CUSTOMARY UNIT IS THE ACRE • ONE ACRE IS : APPROXIAMATELY 210 FT BY 210 FT. OR 43,560 SQ. FT. • METRIC UNIT IS THE HECTARE • A HECTARE IS 2.47 ACRES OR 107,639 SQ. FT.

  15. VOLUME • VOLUME IS THE AMOUNT OF SPACE SOMETHING OCCUPIES. • MEASURED IN TWO WAYS - CUBIC UNITS (CUBIC CENTIMETERS SUCH AS ANIMAL MEDICINE) AND STANDARDIZED CONTAINERS (GALLONS OF MILK)

  16. FORMULA’S FOR DETERMINING VOLUME • SQUARE : V = L x W x H • CYLINDRICAL CONTAINERS : V = R SQUARED x 3.14 x HEIGHT • CONICAL CONTAINERS : V = R SQUARED x 3.14 x HEIGHT DIVIDED BY 3 • IRREGULAR - SHAPED : V = B + B DIVIDED BY 2 x L x H

  17. KINDS OF CUSTOMARY WEIGHTS • AVOIRDUPOIS : Based on the pound ; most widely used • TROY : Based on the pound weighting 12 ounces. • APOTHECARY : Used in weighing medical drugs

  18. TYPES OF WEIGHING MACHINES • BALANCE SCALE • MECHANICAL SCALE • ELECTRONIC SCALE • IMPORTANT TO KNOW THAT MOST AGRISCIENCE LABS USE THE METRIC SYSTEM AND LINEAR MEASUREMENTS NEED TO BE CONVERTED.

  19. WAYS OF SELLING TIMBER • BOARD FOOT : A piece of wood one foot square and one inch thick. • CORD : Pulpwood or firewood is usually sold this way. A stack 4 feet wide by 4 feet high by 8 feet long or 128 cubic feet is one cord • A cord of wood also weighs 5300 lbs.

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