We started with Sink or Float. I know (from personal experience), that 3rd graders have already experimented with Sink or Float in previous grades. So, while we didn't spend a lot of time on it, I used this time around to work on creating a hypothesis as a group. It was fun to walk around and listen to the groups discuss whether they thought something would sink or float, and why they thought that, before they even tried it.
One group asked if they could put everything in at once, after their experiment was over. Why not!
We also searched for Buried Treasure this week! It was a fun take on the usual "Magnetic or Non-Magnetic" Experiment they did in previous grades. I buried four magnetic and four non-magnetic items in sand, and the students had to use their magnets to discover them, group them, and record their data. I enjoyed listening to their conversations as I walked around. Very interesting!
Both experiments went really well! The only thing I would change for next year is to have some mats or trays. Using paper towels under the experiments didn't work because they didn't stay in place. Having trays to work on would eliminate most of the mess left behind.
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