February 25, 2008

This class has the friction page on the big screen.
They are using the Cities and Transportation sets so the colors are different.

They worked in teams of two to do and record the project.

Picking up the cars by the wheels can squish them so close the beams that there is friction.
Then the car will not move down the ramp.

Why does the wheels need to go on the other way? Rubber side rubbing is too much friction.

Why are 2 by 4 plates used?
The thin plates do not hold the rectangle shape
and there can be too much friction with the axles in the angled holes.

The big plates work for ramps and different colors made no difference
because the correct parts were pick by counting studs.