Chemical Education Xchange (ChemEd X) is interested in learning about the progress teachers have made, experiences that teachers have had, areas that are causing difficulty and more as they transition to using Big Ideas to organize chemistry and other science content. For this reason, we are initiating our first content specific Call for Contributions centered around the concept of “Big Ideas and Making Connections”.
Welcome to the Chemical Education Xchange (ChemEd X)! We hope to strengthen the community of chemistry educators by providing learning resources and forums for discussion and collaboration right here at this site. Take a look, and join in.
This year I received a Hach Grant to purchase new molecular model sets for my classroom. I have been using the same old Sargent Welch model kits made of wood for many years. While they did a good job for organic molecules they were lacking for any geometry that had more than four ligands. I applied for this grant because I have been expanding what I am doing with model kits in my classroom and was fortunate enough to get it.
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.
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.
Precisely timed series of interventions lead to the growth of complex, three-dimensional microscale structures.
In Chemical Mystery #7, a can of Coca-Cola was observed to sink in one container of water and yet float in another! This trick made use of the fact that the density of water changes with temperature. See the video below.