Xperience ChemEd X

(e)Xperience ChemEd X through the ideas and opinions of its community members.

Xperience is where contributed, but not reviewed, ChemEd X resources such as blogs and opinion pieces are found. Here you can find blogs in which our contributors express their personal empiricism and polls in which you the community can provide your opinions.

Excel file for compiling student data
by John Varine
Wed, 04/19/2017 - 16:03

To assist in grading the lab results for this and other quantitative labs that we did, I created Excel spreadsheets where the students’ results could be entered. The spreadsheet then did all the required calculations and compared the students’ results to the theoretical value. This made grading the lab reports much quicker and more accurate, flagged incorrect student calculations, allowed a much more complete discussion of the lab results and permitted “what if” questions to be discussed.

Recent activity: 3 days 10 hours ago
How to Meet Students Where They Are At
by Tracy.Schloemer
Wed, 04/19/2017 - 12:03

I have had a variety of students with a broad range of academic abilities in my class at once. This hook doesn’t feel particularly deep until I stop and reflect for a moment on what that looks like.

Recent activity: 3 days 14 hours ago
Image of a chemistry themed clock
by Ben Meacham
Thu, 04/13/2017 - 11:22

As many chemistry teachers know, grading lab reports can be a very time-consuming task. For me, the lab report that has required the most time to grade is a stoichiometry lab that I have been doing the past couple years. Though we do at least four “formal” lab reports each year, what makes this one different is that it involves a lot more calculations and subsequent results than any of our other labs. Regardless of how well they organized their report or wrote their conclusions, their results need to be checked for accuracy. This takes time. Even after eventually being able to generally eyeball their work, it still takes more time than I would like. So, this year I finally decided to sit down and generate a tool for me to expedite this process—the stoichiometry calculator.

Comments: 1
Recent activity: 1 week 1 day ago
Laura Slocum's award certificate
by Deanna Cullen
Sat, 04/08/2017 - 15:26

The James Bryant Conant Award was established in 1965 and has had several sponsors. The award is intended to recognize, encourage, and inspire outstanding teachers of high school chemistry. It is fitting that the Journal of Chemical Education and ChemEd X have established an endowment that will permanently fund the award. I think it is even more fitting that the 2017 Awardee, Laura Slocum, has a history with JCE as a precollege assistant editor from 2007 – 2011.

Recent activity: 1 week 5 days ago
by Chad Husting
Wed, 04/05/2017 - 06:41

The answer may be in the anecdotal evidence. The conversations between students were mini debates. “Are you sure this is correct?” “How do you know?” “What about this other data?” “Should we label that number?” “What about the energy of the particles during a phase change?” And on, and on, and on….They were having discussions between themselves that I would not have been able to elicit as a teacher.

Comments: 3
Recent activity: 1 week 2 days ago
Fluorescence of sunflower dye
by Tom Kuntzleman
Tue, 03/28/2017 - 08:39

The chemistry of the Sunflower dye found in McCormick’s Color from Nature food dyes is explored in this post. This is the last in a three-part series in which several experiments and demonstrations that can be done with Color from Nature food dyes are described.

Recent activity: 1 week 4 days ago
bread/jam
by Deanna Cullen
Wed, 03/22/2017 - 08:37

The American Chemical Society will celebrate Earth Day on April 22, 2017. This year's theme is Chemistry Feeds Our World. I have gathered some resources related to food and cooking from ChemEd X in honor of the theme. I have also included links to other resources.

Recent activity: 1 week 4 days ago
hydrate lab
by Chad Husting
Wed, 03/22/2017 - 07:42

My students and I tend to have good experiences with a hydrate inquiry lab that I have "tweaked" (see the previous blog). Essentially, my students have some practice with hydrates in the lab and then they are provided an unknown hydrate. They must separate off the water by heating and calculate the mass of the anhydrous salt and container before they come up and put it on the scale. As an added twist, they must also ask me a question about what information they need from me to calculate the mole to mole ratio of the salt to water.

Comments: 1
Recent activity: 2 days 16 hours ago
by Ben Meacham
Mon, 03/20/2017 - 14:45

As our Gas Laws unit was coming to an end, it was time to create the test. As I thought of potential test questions that were both challenging and in alignment with the learning objectives we had previously identified for the unit, I was reminded of a multiple-choice question I had been shown in an old Modeling InstructionTM resource.

Comments: 15
Recent activity: 3 weeks 5 days ago
ACS Regional Award for HS Teaching
by Patricia Mabrouk
Thu, 03/16/2017 - 13:08

In 2006, The Division of Chemical Education endowed an award program, the Regional Award for Excellence in High School Teaching, to recognize and inspire outstanding high school chemistry teachers. Each of the ten Regions of the American Chemical Society solicits nominations for this award. The winners receive $1000, an engraved plaque and travel expenses to the meeting where they are honored.

Recent activity: 3 weeks 5 days ago