Pascal triangle mod 2 (did not work, return later)
More Chinese reminders
Game with stickers on forehead: each reports how many blue/red stickers they see; define their own color. Two stickers?
Graph paper and rulers. Coordinate axes.
Place points. Are the three points on one line?
More Chinese reminders
Game with stickers on forehead: each reports how many blue/red stickers they see; define their own color. Two stickers?
Graph paper and rulers. Coordinate axes.
Place points. Are the three points on one line?
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