BCA tables

If you have seen some of my previous webinars*, you probably have heard me mention that I use interactive notebooks in my chemistry I classes. Today, I’m going to share the first of many units: stoichiometry. Keep an eye out because gas laws and thermochemistry will be coming very soon!

In a recent post, I shared sample quiz questions as to how I have differentiated assessment within the mole unit. Here, I will share a specific multi-day sequence within the stoichiometry unit.

A few months ago I was searching the internet, looking for a better way to teach stoichiometry to my pre-AP chemistry students. While my methods of dimensional analysis “got the job done” for most students, I would still always lose students and many lacked true understanding of what was happening in the reaction.

I recently stumbled across a blog about the use of BCA (Before Change After) tables for stoichiometry written by Lowell Thomson.  I was thrilled to discover ChemEd Xchange!  I wanted to share my journey, spurred on by my students, into the extensive use of the BCA

There has been a fair amount of discussion on ChemEd X within the last two years about how to teach stoichiometry.