Workshop #1, Day 2 Re-cap

1 Jul

Day 2 kicked off with some discussions about the new curriculum. I certainly don’t pretend to represent the College Board in any way, but I think I have a decent handle of things surrounding the new exam and course, and given that I am 100% independent, I can also give an honest, personal view of things! Granted it may not be totally unbiased, but I have no incentive to hold back on any opinions – a good discussion resulted!

Next, Paul agreed to share a manganate REDOX titration with us, which led us to teaching points surrounding the writing of half-reactions, what constitutes measurements versus calculations, and a few other discussions about titrations in general.

Paul with the REDOX titration

Paul with the REDOX titration

These general chats always bring up interesting teaching point to me, and as a small example of what I’m talking about we got into the pros & cons of adding electrons first or last when constructing half-reactions – sounds pretty trivial onthe surface, but I think it introduces some interesting ideas about what works for kids.

Titration

Titration

I used the old, ‘piece of paper to help the reading of the manganate meniscus’ trick, that people enjoyed!

Manganate titration

Manganate titration

I coupled the wet lab, with an extra look at question #5 from 2007,

2007, 5

2007, 5

and then with one of Tom Greenbowe’s excellent simulations. These activities gave us a thorough look at one particular reaction that spawned some excellent conversation over a wider context.

We then pressed on to the second of the ‘Big Five’, Equilibrium. A look at another simulation was followed by a brief FRQ writing session after lunch.

We then had a look a three Acid/base lab kits; One from Carolina, one from ScholAr and one from Flinn. All had pros and cons, but we could see good applications for all.

Carolina Acid Base Lab

Carolina Acid Base Lab

Paul contributed valuable things again by giving us access to his titration calculation document, and we finished with a quick look at some more of the Acid Base topics, #3 in the ‘Big Five’.

Indicator Lab

Indicator Lab

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