Day 173: Welcome to Jeopardy

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With 15 minutes to spare on a Friday I decided to share my love of Jeopardy and tell the students about the current run of Julia Collins (19 wins and counting). Some had never seen the show and few knew how it worked. They loved it and tried to beat me and the contestants to some of the answers. I think I may do this once a week in advisory next year. To girls who feel like they need to dumb themselves down, she offers this piece of advice: “If someone doesn’t like you because you’re smart, that’s their problem.”

Day 169: Salinity by Evaporation

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IS II students determined the salinity of a sample using evaporation. Clearly this is not a great method but it is good for them to practice a procedure and they better understand the concept of salinity in parts per thousand (S o/oo). They are able to calculate experimental error and discuss the reasons for it. The samples are placed in a drying oven overnight.

Day 160: TSD Diagram

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Getting this diagram ready to spring on my students tomorrow. Great way to show how we can determine salinity if we know density and temperature. Will show them how we use a hydrometer to find density. They will do a salinity lab the next day and determine salinity in ppt (o/oo) by evaporation.

Day 158: Radiation Lab – It’s Easy as Alpha, Beta, Gamma

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With apologies to the Jackson 5 . . . students in IS I did a neat lab that is courtesy of Advancing Science at Gettysburg (PA) College. Students used radiation detectors and Logger Pro to measure the background radiation and then the radiation counts from alpha, beta, and gamma sources. They shielded the sources with paper, plastic, aluminum foil, and lead. Quite an eye opener to see how energetic gamma particle are!

Day 157: Unknown Sand Lab – II

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On the left, IS II students work on finding the settling velocity of one the their 8 sand samples. Instructions and some diagrams are shared with them via Google drive (hence the laptops). Students work in teams of 4 and they are really good at dividing the tasks and working together. Overall a great lab ( click here for instructions and here for the descriptions).