Category: Computers and the web

Excel spreadsheet for calculating molar masses and percent composition

Over a decade ago I made a Quatro-Pro  spreadsheet to make quick calculations from masses on the periodic table. Well, now Excel rules the roost, so I created a similar version  using Excel. The fundamental element of the spreadsheet is that the cell with each mass is given a name that is the symbol for the element. So, for example,...

Why I’m pledging off quickly Sharing those great images with embedded text on Facebook.

Most of us have probably done it. We see a great quote or other statement embedded in a photo on Facebook, Google+, or other social networking site. Maybe it’s political, maybe it’s insightful, maybe made us Laugh Out Loud. A quick click of the Share button and all our friends can read it…well, most of them. Maybe we have a...

Results of online grading survey

Last week I posted a survey of online grading practices. I announced the survey through several email lists I participate in [1], as well as on my Facebook “wall”. The survey was open for five days, and resulted in 164 responses. I make no attempt to pass this survey off as statistically accurate representation of all teachers/schools–the respondents come from...

Survey of teacher use of online grading systems and their implementation

If you teach at a middle school or high school, please take a couple minutes to answer this survey. I will post results here in mid-December 2012. (Apologies for the multiple scroll bars.) I’ve reached the capacity of the free Survey Monkey site (100 responses!), so I’m making a copy of it. If the survey don’t appear below, it means...