2What is measurement?Measurement is a comparison of an attribute of an item or situation with a unit that has the same attribute.Meaningful measurement and estimation of measurements depends on personal familiarity with the unit of measure being used.
3What would you measure?BucketBallAround the house
4Attributes we measure Length Mass or weight Capacity Area Volume Time TemperatureAngles
53 steps to understanding measurement Students must understand the attribute they are going to measureStudents must understand what a unit of measure is and how it is used to produce a measurementStudents must understand the devices used to measure the attribute
7Informal advantagesMake it easier to focus directly on the attribute being measured.Make a good case for why standardization is important.Fun!Informal measurement gives the student an opportunity to understand the attribute being measured before introducing the standard measurement.
8Estimation of measures Estimation of measures and personal benchmarks for frequently used units help studentsincrease their familiarity with unitsprevent errors in measurementsaid in the meaningful use of measurementIs it a reasonable estimate?
9Estimate before measuring Helps students focus on the attribute being measured and the measuring processProvides intrinsic motivation to measurement activitiesHelps develop familiarity with the unit of measureEmphasizes the use of approximate language, including “about” the measure of …Helps clarify “precision” of error – the most precise we can ever be is half the measured unit of measure
10Length – we’re going on a measure hunt! Find 5 items that are about the measure of 5 linker chainsFind 5 items that are about the measure of a foot
11Small lengths with ruler Don’t always start from the edge“Zero” on rulers varyUse a broken rulerMeasure items smaller than the rulerMeasure items longer than the ruler
18millimeterThickness of a dimeThickness of the lead in your pencil
19centimeter 10 millimeters Width of your little finger nail Width of a paper clip
20decimeter 100 millimeters 10 centimeters Length of a crayon Height of a soup canSmall pocket combCell phone
21MeterHeight of a door knobChildBaseball batGolf Club
22deKameter 10 meters Length of a classroom ½ of a tennis court Small school bus
23hectometer100 metersFootball field plus one end zone
24Kilometer A little more than a half mile (.6 of a mile) Long distances Driving distancesMarathons – 42 Kilometers (26 miles)
25Race to the finish Customary – 10 yards Metric – 10 meters = 1 dekameterWhich team will reach their mark first?Cooperative Learning Groups#1 Recorder: Select and read the card. Make an estimate of the item to be measured.#2 Coach: Select and locate the right measurement tool to use. Explain the markings on measurement tool.#3 Athlete: Measure the item. Get a confirmation from team members that the measurement is accurate.#4 Equipment manager: Locate the item to measure, explain how it is used. When finished, return the item.
46gramPaper clipNote: A penny weighs approximatelygrams.
47kilogram1000 gramsTextbook5 bananasA little over 2 pounds
48Measurement Line-upLine up the 5 items in order from smallest capacity to largest capacity.EstimateLine up the itemsCheck on the label
49Measurement Line-upLine up the 5 items in order from lightest weight to heaviest.EstimateLine up the itemsCheck on the label
50Metrics – King Henry doesn’t usually drink chocolate milk KilometerHectometerDekameterMeter – Basic UNITDecimeterCentimeterMillimeter
51Area Measurement of covering Don’t use formulas, allow the students to create the rulesUse informal – How many deck of cards will fit onto a piece of paper?Formal – How many 1” color tiles does it take to fill the piece of paper?
52Volume Amount of space inside an object Cubic units Use wooden cubes to find fill containers.
53Customary Capacity Points of References Gallon – 128 ounces, milk jug, 4 quartsQuart – 32 ounces, eggnog, quart of milkPint – 16 ounces, medium fountain drinkCup – 8 ounces, milk container at lunch
54Metric Length Points of References Kilometer – a little over ½ mile (6/10 of a mile)Hectometer – football field + one end zoneDekameter – length of a small school bus, width of your bedroomMeter – height of a door knob, baseball bat, a little more than a yardDecimeter – height of a soup can, width of your hand, length of a crayonCentimeter – width of your little fingernail, width of a paper clipMillimeter – thickness of a dime
55Metric Capacity Points of References Kiloliter – child’s wading pool of water – metric tonHectoliter – car’s gas tankDekaliter – large punch bowl, fish bowlLiter – a gulp more than a quartDeciliter – tea cupCentiliter – teaspoon of liquid medicineMilliliter – 20 drops of water
56Metric Mass Points of References Kilogram – textbook, 5 bananas, a little over 2 pounds (2.2 lbs.)Gram – mass of a paperclipMilligram – mass of a butterfly’s wing
57home linksLink learning of measurement by having the students measure items at homeMeasurement Line-upsCooking and BakingScale drawings of rooms which would include measurementsInformal – measure the length and width of their room by stepping it off.Build a ramp (skateboard or handicap)
58Measurement Displays Throughout the school – make measurement a focus. Points of referenceA daily question with the answer given at the end of the day.How far is it from our the office to the playground?Estimate the weight of a fire truck.How much does one gallon of water weigh?How long is your principal? – Estimate, then measure.How cold is it in Hawaii today? What is the difference between our temperature and Hawaii’s temperature?Metric Units and conversionThe Big “G” and “Gallon Guy”The temperature of the day in Olathe
59Make Measurement happen The more the students measure, the better they get at estimating and measuring!Experience measurement by measuring!