Mathematics and Society - OS X Lion Server

Spy ON THE EYEMaterials Needed:Clock with a second hand2 secretive, spying studentsActivity: (1) For 1 minute count the number ofblinks your partner makes and recordblinks per minute in the table. Askyour partner to blink in a naturalway.(2) Have your partner find your rate ofblinking.(3) Move to a bright area--near thewindow, near a lamp, in the sunshine--andfind out if the blinkingrates increase.(4) Secretly find the blinking rate of4 other students, 2 girls and 2 boys.Record.(5) Do the same for your teacher.(6) Find and record the blinking rateof someone wearing contact lenses.(7) Is there any difference in the blinking rate of boys and girls?(8) Is the blinking rate of the student wearing the contact lensesfaster than the other rates? Why?(9) Use your blinking rate to find the number of blinks you will makein a day? a year?(10) If your eyelids move 2 cm in a blink (1 cm in closing and 1 cm inopening), how far will your eyelids move in a day?147