Mathematics and Society - OS X Lion Server

III.Between the ages of 2 and 4 a child usually begins to establish a preference forusing either the right or left hand for performing tasks. The following activitycan be used to establish handedness and also the degree (or dominance) of handedness.Type a page of zeros and furnish a dittoed copy for each student.1) As one student acts as a timer another student crosses off zeros on thesheet for 30 seconds. An X is the preferred method for crossing off thezeros.2) Repeat, this time using the other hand. Record both results in a table.3) Change roles and have theother student get and recordhis scores.4) Which is the dominant hand?5) Divide the smaller numberinto the larger number todetermine the degree ofhandedness (dominance).RIGHILEFTFor Example: RIGHT 50LEFT 25225150The right hand is twice asdominant as the left hand.6) Does anyone in the class have a degree of dominance that is almost I?7) What could this mean?IDEA FROM:Modern Life Science, by F. L Fitzpatrick and J. W. Hole,Copyright © 1970 by Holt, Rinehart and Winston, Publishers.Probing the Natural World, Volume 1, and Investigating Variation, Intermediate ScienceCurriculum Study.Permission to use granted by Holt, Rinehart and Winston, Publishers, and Silver Burdett General LearningCorporation135