Organized by: Natt Supab, Rachel Cranfill, Darryl Yong
We're going to have ? stations.
1. Egg magic: We have eggs that have been soaked in vinegar, and we can demo how these eggs can go into a bottle without breaking. We also have another demo about floating eggs. Start by slowly filling a wide-mouth quart jar half full of tap water. Gently lower a raw egg (not a hardboiled egg) into the jar. You will notice that the egg remains on the bottom of the jar. Now using a wooden or plastic spoon, gently stir the water as you slowly pour about a half cup of kitchen salt into the water. You want the salt to dissolve as you stir it rather than pile up on the bottom of the jar.
2. Pickle power: see below.
3. Citrus magic:
Find a dime and penny dated before 1987 and wash them thoroughly. Have a parent cut two slits in another juicy lemon, about 1/4 inch apart, and insert the coins halfway into each slit. Stick out your tongue and touch both coins simultaneously. You'll feel it tingling: that's electricity!
Also lemon juice keeps fruit from turning brown.
1) trying to get an egg into a narrow-mouthed bottle without breaking it. we can see what the students try to do to solve this problem, and then bring out eggs soaked in vinegar (for 24 hours, I think) and show them how easy it is to pop that into the bottle and explain why vinegar dissolves egg shells. I don't know whether this is a whole hour-long activity, though.
2) making rock candy, but this would take more than a day!
Trang Pham says: We made carbonated fruit for Sontag Wine & Cheese, and it only took a few hours. This would be a nice treat for the students. Also, you guys have great ideas, but they all require more than one day. :/ How about, cutting up apples and avocados and have the students explain why they brown. Have them come up with ways to preserve the fruits?
-->> what do we use to plug the pickles in??
time | what's happening |
---|---|
3:00-3:10 | intro |
3:10-3:20 | let the students try to get eggs into bottles |
3:20-3:30 | bring out the prepared eggs, explain to them what happened |
3:30-3:40 | mint lifesavers lightning-in-mouth thing |
3:40-3:50 | plug pickle into wall! explain what's happening |
3:50-4:00 | serve carbonated fruit while talking about the process? |