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STUDENT RESPONSE PAGE NAME__________________ HOW MANY LAKES? ESTIMATE: USING THE MAP ESTIMATE THE NUMBER OF SUBGLACIAL LAKES IN THE IMAGE: 1. 2. 3. 4. 25-50 >50 BUT < 70 >70 BUT <300 >300 _______ _______ _______ _______ Why would we use the mathematical tool of ‘estimating’ to answer this question? ______________________________________________________________________________ PERCENTAGE: USING THE MAP USE PERCENTAGE TO EXPRESS HOW MUCH OF ANTARCTICA IS SHOWN AS BEING BELOW SEA LEVEL: 1. 5 TO 10% 2. 20 TO 40% 3. 60-80% _______ _______ _______ Why would we use the mathematical tool of ‘percentage’ to answer this question? ______________________________________________________________________________ Lamont-Doherty Earth Observatory For more activities see: http://www.ldeo.columbia.edu/edu/polareducation/