Making Measurement Meaningful or Why to Avoid Saying "Sig Figs" in Class.

Gluging in Class

Every year when the day came to discuss the rules for significant figures in measurements with my classes I would write the rules on the board, we’d work through a couple examples, and I’d try to find a way to explain why we needed to use them when reporting measurements.  This has never been my favorite topic to teach, mostly because I had a difficult time helping students see why these rules for measurement and reporting uncertainty were important.

Cautious Chemistry Corner #2: Methyl Alcohol Again

Another chemistry demonstration accident has happened. This one was at a museum in Nevada. In preliminary reports, it looks as if several children were injured. One child was held overnight in the hospital. See the article posted on Yahoo News. (Thanks to Tom Kuntzleman for the link.)

AACT: A Community for K–12 Teachers of Chemistry

AACT

On September 2, the American Association of Chemistry Teachers (AACT) launched its official website, loaded with lots of resources and member benefits. If you visit teachchemistry.org, you will find many great tools that K–12 teachers of chemistry can use in their classrooms; the new online periodical, Chemistry Solutions; professional development opportunities; and a community for you, in addition to many other benefits.

Using an Introductory Video to set the stage for a Blended Classroom

Introductory Video on YouTube

Deanna Cullen wrote about her decision to move forward with a blended model this year and asked for some suggestions about videos. I've been using videos as a teaching tool in my class for the last six years and wanted to share some thoughts.