1. Reasonably classify water of different colors;
2. Calm down and use empty cups to sort water of different colors;
3. Put water of the same color into a test tube;
4. Observe more and summarize more rules, so that you can sort water successfully as soon as possible
2. Calm down and use empty cups to sort water of different colors;
3. Put water of the same color into a test tube;
4. Observe more and summarize more rules, so that you can sort water successfully as soon as possible
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