Measurement

Subject Matter Consultant: Dr Dawn Ng Kit Ee consistency No Three can compare across different Four put side-by-side why ? contexts standard direct perčeptua/ handspan COMP, COMPARISON v2 Created by: Daniel Tay X S Singapore May 2014 [email protected] non-standard indlirect ONG ESTIMAT IDENTICAL UNIT 11 12 TRANSITIVITY conservation If A > B chunling foot eg. use ruler 90- 80 70 60 50 40 30 ¡TERATIONS 30 40 50 60 70 80 & B > C km number of iterations needed inverse relationship compensation metres shorter of UNIT unit STANLEY FatMax size Helix H01 BladeArmor Measurement * P 25 | longer \ength calibration cm mass no overlapping kg correct use 4.8 cm 4.7 cm 4.9 cm no gaps AREA gram errors reading ENCLOSED starting point rim e t volume spatial visualization end point parallax error? decomposition composition x1000 x100 000l+ 120 130 140 15o 160 170 180 20 ATTRIBUTES 10 0 180 170 160 150 140 130 120 1 more fewer INSTRUMENT