I'm going to help save the planet by adding solar panels to my roof!
Should I tilt the panels on my roof to more accurately aim towards the Sun?
If so, at what angle should I use?
S...
There's a lot of misinformation out there about the cost to consumers of CFL and LED bulbs and the savings in energy and money that could be realized.
Let your students "do the math" and realiz...
Sunday, April 22nd, 2018, is Earth Day. Use this activity to demonstrate the various mappings of our 3-d Earth to a 2-d piece of paper. Students compare maps with this famous photo and check to...