John Hattie is a guy who spent twenty five years doing over 50000 meta analysis studies on about 80 million students and wrote a book called “Visible Learning”. He has also done a number of TED talks. Essentially, he asks the question, “What affects students learning?” and clearly as well as simply defines what an “effect” is. He told the story of a researcher who spent years recording classroom interactions from the perspective of the student and the teacher. The researcher was surprised to learn that about seventy percent of learning was not visible to the teacher. So..even the best teachers with the best data only get about thirty percent of the picture. Next came the book, Visible Learning for Teachers and the website “Visible Learning Plus”.
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BCCE 2016 was an amazing couple of days. It is kind of like drinking from a fire hose. Here were some high points that you might find helpful. As one participant was heard saying, "It is kind of like rocket fuel for the school year."
These berries are really miraculous! After chewing a berry, you can bite directly into a lemon wedge, and it will taste like lemonade!
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I am sitting in Greeley Colorado. It is the first day of the 2016 BCCE. Time to get my learn on! I have spent the last week pouring over the schedule and deciding what I want to attend and a huge problem has developed. I am double booked almost every day!
A quick search on Amazon for a package of 144 ping pong balls and a trip to the arts and crafts store for paint, magnets, and glue and I was ready to start making my own class set of model kits.
I am a very firm believer that the world of physical science can be visualized and is an excellent medium for teaching students to model and to picture what happens at the molecular level. The first topic we decided to explore was balancing chemical equations. This seems like such a simple topic to chemistry teachers but I have found that it can be quite challenging for many of my inner city students. The first thing they ask me for is a list of rules that they can follow. We can discuss the problems of algorithmic teaching in a later post! For the time being let’s talk about how to get students to understand why they need to balance equations and discuss what we can call “Conservation of Atoms”.
One of my biggest struggles with students is to try to explain what happens when items, specific inorganic salts, dissolve in water. It might sound simple to me and you. Research shows that students have many real misconceptions when it comes to explaining inorganic salts dissolving in water. My own experience along with other teachers I know is that we are amazed and sometimes frustrated with trying to help students understand the simple process of dissolving, especially with ions. A key piece of equipment is a good conductivity tester. Just got done making a stack of them and can't wait to have students try them. But back to "dissolving"....
Exploration of Instrument Design and Performance
The July 2016 issue of the Journal of Chemical Education is now available online to subscribers. Topics featured in this issue include: cost-effective instrumentation, including 3D printed instruments and low-cost spectroscopy; laboratory instrumentation and equipment; effective teaching assistants in chemistry; laboratory experiments; resources for teaching; puzzles and games to introduce the periodic table.