We read the "Late for Lunch" story.
Then we tested out different robot shapes and gearing.
Both tires and treads work.
Too high a center of gravity does not work.
Bigger tires on back or front works.
Treads have to be forward of the beams.
Only the one on the right works.
The girl on the front works better than on the back.
Just a small change of center of gravity can cause problems.
The bot can get the glasses, too.
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