Explore 8/24 -8/28 Bell-work What would you use to measure the distance from the school to your house? (inches, feet, yards, miles)
Conversions What are conversions – According to Merriam-Webster. com Converting is to change from one form or function to another. In science and math we talk about converting measurements. Like changing inches to feet or feet to inches.
Conversion In the U. S. we use the customary system and the International system (metric) for measurements. In science we use the International system (metric). It is called the international system because everyone in the world uses it.
Conversions Distance – According to Merriam-Webster. com the degree or amount of separation between two points, lines, surfaces, or objects In the customary system we measure distance in: Inches Feet Yards Miles In the IS system we measure distance in: Millimeters Centimeters Decimeters Meters Dekameters Hectometers Kilometers
Conversions How do you convert? You have to know something about the measurements before you can convert. Look at your ruler Tell me how many inches are in one ruler Tell me how many feet are in one ruler Now tell me how many inches are in one foot.
Conversions 1 ft=12 in or there are 12 in in 1 ft 2 ft=___in or there are ___in in 2 ft 3 ft=___in or there are ___in in 3 ft Do you see a pattern? Are we adding, subtracting, multiplying, or dividing. What number are we using?
Conversions 12 in=1 ft 24 in=___ft 36 in=___ft Do you see a pattern? Are we adding, subtracting, multiplying, or dividing. What number are we using?
Conversions Look at the yard stick How many inches are on the stick? 36 in How many feet are on the stick? 3 ft How many yards are on the stick? 1 yd
Conversions 36 in=1 yd or there are 36 in in a yd – 72 in=___yd – 108 in=___yd Do you see a pattern? Are we adding, subtracting, multiplying, or dividing. What number are we using?
Conversions 1 yd=___in 2 yd=___in 3 yd=___in Do you see a pattern? Are we adding, subtracting, multiplying, or dividing. What number are we using?
Conversions 3 ft=1 yd or there are 3 ft in a yd – 6 ft=___yd – 9 ft=___yd Do you see a pattern? Are we adding, subtracting, multiplying, or dividing. What number are we using?
Conversions 1 yd=3 ft 2 yd=___ft 3 yd=___ft Do you see a pattern? Are we adding, subtracting, multiplying, or dividing. What number are we using?
Conversions 1 mile= 1760 yds 1 mile =5280 ft 1 mile = 63, 360 in
Conversions Convert the following – 1 ft=___in 1 yd=___ft 24 yd=___ft – 3 ft=___in 5 yd=___ft 3 ft=____in – 7 ft=___in 12 yd=___ft 7040 yd=___miles – 36 ft=___in 24 in=___ft – 1 yd=___in 84 in=__ft – 5 yd=___in 144 in=___ft – 9 yd=___in 18 yd=___ft
Conversions What is mass? – The amount of matter in an object What is weight? – The force of gravity on an object at the surface of a planet.
Conversions Our weight is determined by the place we live. If we went to The Moon our weight would be less. Our mass is determined by the amount of matter that makes us. Our mass never changes.
Conversions The customary system uses Ounces (Oz) Pounds (lb) Tons The SI system uses Milligrams Centigrams Decigrams Grams Dekagrams Hectograms Kilograms
Conversions The conversion patterns are just like the ones we use for distance. – When we have inches (smaller unit) converting to feet (larger unit) we divide. – When we have feet (larger unit) converting to inches (smaller unit) we multiply. Pounds to tons we ____ Ounces to pounds we____ Tons to pounds we____ Pounds to ounces_____
Conversions Here are the conversions 16 Oz=1 lb 32, 000 Oz= 1 ton 2, 000 lbs = 1 ton
Bellwork Convert the following 3 ft = ____in 3 lbs = ____ T 36 in =_____yards 1 T=_____ lbs
Conversions 16 Oz = 1 lb – 32 Oz=____lb – 48 Oz =___lb – 64 Oz=____lb – 128 Oz= ___lb
Conversions 1 lb=16 OZ – 3 lbs=____Oz – 12 lbs=____Oz – 9 lbs=____Oz – 5 lbs=___Oz
Conversions 2, 000 lbs=1 ton – 4, 000 lbs=____ton – 16, 000 lbs=___ ton – 6, 000 lbs=____ton – 24, 000 lbs=___ton
Conversions What is capacity? – the maximum amount or number that can be contained or accommodated The customary system uses Fluid ounces (fl. oz) Cups (c) Pint (pt) Quart (qt) Gallon (gal) The SI system uses Milliliters Centiliters Deciliters Liters Dekaliters Hectoliters Kiloliters
Conversions Ounces 8 fl oz = 1 c 16 fl oz = 1 pt 32 fl oz = 1 qt 128 fl oz = 1 gal Cups 2 c= 1 pt 4 c = 1 qt 16 c= 1 gal Pints 2 pt = 1 qt 8 pt = 1 gal Quarts 4 qt = 1 gal
Conversions Remember Small unit to big unit means to divide Big unit to small unit means to multiply Feet to inches_____ Gallons to pints _____ Pounds to ounces ______ Yards to miles_____ Cups to quarts____ Pound to Tons_____
Conversions Now it is time for some practice.
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