Click the map below for a fun video on the 7 continents!
http://www.internet4classrooms.com/skill_builders/measurement_math_third_3rd_grade.htm
http://www.rickyspears.com/rulergame/
http://www.teachingmeasures.co.uk/length/dragdist/ruler15cm.html
http://www.funbrain.com/cgi-bin/meas.cgi?A1=s&A2=1&A3=0&INSTRUCTS=1
http://www.harcourtschool.com/activity/length_strength3/