Hello there! I just worked with my co-teacher to do an awesome lab to start out the year. It's a three bottle problem where the students work in pairs to determine which of their solutions matches those of their labmate by mixing them in plastic well plates. For example, A = 2, B = 3, C = 1, where one student has A - C and the other has 1 -3. They should both mix their solutions together (A+B...
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