Farming on Mars

One of the games we play at the robotics workshop is the farming-on-mars game. The robots drive about, always keeping within a field thanks to their line sensors. The children have to design a scooping device to attach to their robot so that it can sweep up as many potatoes (sweets) as possible in 1 minute, anything it sweeps out of the field (black tape in the picture below) is theirs.

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