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.
Resources To Inform Teaching and Learning
The April 2017 issue of the Journal of Chemical Education is now available online to subscribers. Topics featured in this issue include: green chemistry; environmental chemistry; using food chemistry to teach; 2016 Jame Bryant Award; development of important skills; chemical education research: assessment; advanced laboratories; from the archives: water quality.
On April 22, 2017, people all over the world will be coming together to stand up for science. The March for Science is a part of a global movement by scientists, science-enthusiasts, and evidence-based policy makers to celebrate the integral role science plays in all our lives. The March will serve to further several goals, I encourage you to read about them.
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.
Each week I decided to put on paper, or in a blog, one concrete action that I could take that I was pretty sure would help at least one student. After almost three years and close to a hundred entries, the entries were separated into categories by multiple people. The result was pretty clear....my biggest struggles were with assessment.
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.
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.
According to the app store description, Chemical Formula Challenge is "An educational game to improve your ability to form chemical formulas from chemical names. You can either play it yourself or challenge a friend". The app features different levels of play such as easy, normal, and hard regarding the difficulty of the ions. As an example, beryllium chloride is considered "easy" while lead II nitride is considered "hard". The app then gives the user several ions to choose from and the user must then select the correct number of ions needed to balance the formula correctly.