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ChemEd X contributors offer their ideas and opinions on a broad spectrum of topics pertaining to chemical education.

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Whiteboard for C.E.R. Discussion
by Lowell Thomson
Fri, 02/17/2017 - 08:59

In a recent blog post, Ben Meacham shared his use of the Claim-Evidence-Reasoning Framework. I have started using this approach for class discussion as well, and will share some ideas and thoughts about the process.

Comments: 1
Recent activity: 1 day 13 hours ago
by Michael A. Morgan
Wed, 02/15/2017 - 18:48

I always find this time of year quite harrowing. I am right in the middle of academic competition season with Olympiads in physics, chemistry, biology, and math. I have science bowl and ocean bowl along with bridge building all on the same day. Why do we do this to ourselves?

Recent activity: 4 days 9 hours ago
by Kate Anderson
Fri, 02/10/2017 - 13:21

Beyond Benign, a national nonprofit, established in 2007 to equip educators, scientists, and citizens with the tools to teach and practice green chemistry to achieve a sustainable society, just announced a strategic partnership with Flinn Scientific.

Recent activity: 1 week 2 days ago
Ionic Covalent Card sort
by Chad Husting
Thu, 02/02/2017 - 19:10

Card sorts are a great way to achieve a number of classroom objectives.  They can be used as a review activity or they can be done during the middle of a lesson as a type of formative assessment. Sorts can encourage students to work with other students or can even be used as a type of exit ticket. I decided to use the strategy about two thirds of the way through a unit on covalent and ionic compounds and lewis structures. I knew there were items we did not cover in the sort but I was curious to see how they would approach these unknown topics.  

Recent activity: 2 weeks 2 days ago
Sky Blue dye
by Tom Kuntzleman
Tue, 01/31/2017 - 09:15

The chemistry of the Sky Blue dye found in McCormick's Color From Nature food colors is explored. This is part one of a three-part series in which the chemistry of McCormick's Color From Nature food colors is presented.

Recent activity: 2 weeks 5 days ago
carbon dioxide absorbing IR light
by Tom Kuntzleman
Wed, 01/25/2017 - 11:11

It is becoming increasingly important for citizens to understand various concepts related to climate change and global warming. This post describes several chemical concepts that are pertinent to these issues, in the hopes that teachers of science and chemistry can introduce the topic of climate change into their classrooms and everyday discussions.

Comments: 6
Recent activity: 2 weeks 4 days ago
concept map
by MeyersChemistry
Tue, 01/24/2017 - 12:24

It’s the end of one semester and the beginning of another. Final exam week. For the first time in my teaching career, I had my grades caught up and posted prior to the beginning of final exams. This gave me time to reflect and plan ahead.

Recent activity: 3 weeks 5 days ago
Concentration vs Rate of Reaction
by Ben Meacham
Tue, 01/24/2017 - 09:33

Whether you are introducing collision theory or something more demanding like reaction order, the reaction between sodium thiosulfate—Na2S2O3 and hydrochloric acid can provide a consistent, accurate, and engaging opportunity for investigating these topics.

Comments: 3
Recent activity: 2 weeks 3 days ago
Hoffman apparatus
by Chad Husting
Sun, 01/22/2017 - 08:01

There are many places online to build a DIY Hoffman apparatus. The ACS offers an electrolysis of water lesson that includes a hand made Hoffman apparatus(link is external) as part of a unit on energy that I used as a resource. 

Recent activity: 5 days 20 hours ago
bucket launch
by Tom Kuntzleman
Mon, 01/16/2017 - 09:21

The solution to Chemical Mystery #9: Liquid Nitrogen vs. Dry Ice is presented. Why does liquid nitrogen launch the bucket so much higher than dry ice and water?

Recent activity: 1 month 4 days ago