It is my first year as well, so we are learning too. However, my kids are 
measuring the distances the robot needs to travel.
We programmed the robot to travel in a straight line for a set time (I 
think it was 10 sec). Then they measured the distance travelled, and I 
had them compute the seconds per inch travelled.

Then they just multiply the seconds/inch by the number of inches the 
robot needs to move, so that they can program the number of seconds 
to move. 
So far it seems to be working OK for them. There may be an easier way 
to do it, but this is what they came up with.
Hope this helps!
Team Blockbusters

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