# high school

## Meltdown Showdown! Which Deicer Works Best?

In this Activity, students test two chemical deicers, rock salt (sodium chloride) and calcium chloride, to determine which melts ice better and whether it is worth the extra cost to buy a more expensive deicer. They perform three tests comparing the two deicers, predict which will be more effective at melting through a thin disk of ice, and then test their prediction.

## Measurements for a Rainy Day

In this Activity, students collect data outdoors on a rainy day using plates and paper towels and use the information to calculate the rate of rainfall. This Activity reinforces ideas about density, mass, volume, area, length, and units.

## Brushing Up on Chemistry

In this Activity, students make their own toothpaste and use various tests to compare its properties with those of commercial toothpaste. This includes testing its ability to remove stains from the dyed shells of hard-boiled eggs. The Activity allows students to discover more about a cleaning product they use every day.

## big-sleep-ian-parker.jpg

Insomnia drugs like Ambien are notorious for their side effects. Has Merck created a blockbuster replacement?

## work-sheet-accompany-orbital-viewer-program-preview.png

I have my students use Orbital Viewer when learning about quantum numbers and their associated rules, electronic orbitals, and other quantum concepts.  I have developed a worksheet that allows students to use Orbital Viewer to explore various concepts related to electronic orbitals.

## simpsons-and-their-mathematical-secrets-simon-singh.jpg

Simon Singh uses mathematical tidbits planted by the nerds and geeks who write The Simpsons to lead the reader on an excursion through some amazing mathematics. The book will appeal to the kind of person who might read JCE, and others with some mathematical background and interest.