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JCE ChemEd Xchange provides a place for sharing information and opinions. Currently, articles, blogs and reading lists from ChemEd X contributors are listed below. We plan to include other items that the community wishes to share through their contributions to ChemEd X.

ChemEd X Professional Learning Community

We are happy that you have chosen to attend our ChemEd X Professional Learning Community Workshop! Our hope is that you will leave with a better understanding of our mission for ChemEd X and you will be able to make better use of the site. If contributing content for publication is one of your goals, you will have a better understanding of that process.

2016 BCCE

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!

Find us at BCCE 2016

ChemEd X swag

Attending BCCE? Check out details of our schedule and booth to find us there!

Representing Molecules

magnetic ping pong model kits

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.

Balancing Equations with Molecular Models

molecular model kit

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”.

Time required: 

50 minutes

Puddles, Dissolving and a Cool Conductivity Tester...

Conductivity Tester

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"....

JCE 93.07 July 2016 Issue Highlights

Journal of Chemical Education July 2016

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.

NO MORE UNIT TESTS...What do you think?

My students are bright and motivated. Most work hard and prepare for class and tests. They perform extremely well on district-wide tests and my own classroom tests. However, I see real weaknesses on cumulative assessments requiring high levels of application. My students simply do not retain the content knowledge. I want to restructure my course to exclude "unit tests" and include only cumulative assessments. I'll share my early ideas here, and I would love to hear your experiences.