inquiry-based discovery learning

A nice quick and easy stoichiometry lab...

Stoichiometry lab

Students are told that they have to determine the amount of active ingredient in an antacid tablet. Then I ask them if they have any questions. First it starts with blank stares...then slowly the questions start coming. What exactly is the active ingredient? What does it react with? They are provided information that the active ingredient is baking soda.

A New Standard: Refine the Design of a Chemical System by Applying Engineering Principles

Teachers are accustomed to implementing new learning standards developed by state or national leaders. My state, Georgia, chose not to adopt the newest national standards. State leaders wrote the “Georgia Standards of Excellence” instead. Full implementation of the GSE begins in the 2017-2018 school year.

JCE 93.11 November 2016 Issue Highlights

Journal of Chemical Education November 2016

Analytical Thinking, Analytical Action

The November 2016 issue of the Journal of Chemical Education is now available online to subscribers. Topics featured in this issue include: electrochemistry; researching how assessment aids learning; using technology to teach; environmental chemistry; hands-on, minds-on activities and demonstrations; geology-inspired chemistry.

Hydrate Labs, Microscale Chemistry and Cage Fighting....

Bottle cap set up for hydrates

For years my students would heat the hydrates in glassware, burn themselves, break the glassware and splatter salts and thus their data, all over the lab bench. A few years ago Bob Worley came up with a great microscale technique. Essentially, it takes a used bottle cap without the plastic and this is used as the dish. Next, there is about a three inch machine screw that goes through a drilled hole in the cap. A nut is placed on the screw to hold everything in place and cheap pliers are used to hold the entire assembly over the flame.

JCE 93.10 October 2016 Issue Highlights

Journal of Chemical Education October 2016

The October 2016 issue of the Journal of Chemical Education is now available online to subscribers. Topics featured in this issue include: exploring the candy–cola soda geyser; peer-led team teaching; investigating students’ reasoning; fostering a student-centered learning environment; chemical education in India; activities to increase interest in chemistry; using a smartphone in the laboratory; food chemistry analysis; organic synthesis; green chemistry in the organic laboratory; materials science experiments; cost-effective laboratory equipment; teaching resources; JCE resources to celebrate National Chemistry Week 2016.

If only I could bottle this...

cartesian divers

Each year we do an activity that involves Archimedes principle. You might wonder...why do this in chemistry? Leading up to the activity, students do a series of labs and activities that involve measuring, accuracy, precision, significant numbers and density. The culminating guided inquiry activity takes place by which students take an object, find the volume in multiple fluids and find the mass in multiple fluids. An examination of class data starts to show that the volume of a solid does not change in fluids but the mass in air and the mass in different fluids are different.