I published an article about an independent study unit I use with my AP Chemistry class two years ago, A guided group inquiry lesson on coordination compounds and complex ions. In the time since it was published, I have expanded the unit quite a bit and written some new assignments to go along with it. I use this unit every year as a post AP activity and am very fond of it. I thought some of my readers might enjoy seeing how it has changed and get access to the new assignments I have developed for it.
On June 20, 2016 at 6:34 P.M. E.S.T., our sun achieves the most northern point in its journey and stops. The summer solstice marks the moment when the sun stands still; a Latin derivative from the words sol, meaning ”sun”, and sistere, meaning “to come to a stop.” Imagine the wonder and curiosity associated with such a phenomenon in the ancient world!
It's been a few days since my summer break began. I have had a few days to decompress, relax, and think about my next post. I have been planning to write about concept mapping since the end of our first semester. I first recognized the effects of concept mapping in the classroom when I read Shannon Bowen's blog post last December.
Guiding principles in my scope and sequence: Start with a simple representations of the nanoscopic and dig deep. Hopefully, by the time we start with vital, albeit often more challenging symbolic representations (mole, stoichiometry, solutions), students have a decent foundation to build upon.
During our review since last week, resonance was labeled as one of the most tricky concepts (along with electron pushing in my opinion), despite lots of practice and instruction. My teaching sequence consists of defining and providing examples of conjugation (after learning about hybridization), delocalized electrons, and finally pushing electrons if conjugation exists. I remember from teaching at the college level that resonance was also a tricky topic for many undergraduates.
Solution to Chemical Mystery #6 is presented. Also, concepts related to the chemical can crush demo are briefly discussed.
Can you figure out how this experiment works?
This past week, as part of our Thermochemistry unit, my students were completing one of my favorite Target Inquiry Labs entitled “ A Very Cool Investigation”. We were using calorimeters, dissolving ammonium nitrate, and my students were recording the change in temperature using a digital thermometer. Some of my students had noticed that with si