Anaheim Ducks S.C.O.R.E program: lots of free downloadable material and workbooks connecting science concepts with hockey for kids
Audubon Bird Guide: guide to North American birds, which includes sound clips
Biodiversity Heritage Library: improves research methodology by collaboratively making biodiversity literature openly available to the world as part of a global biodiversity community.
Calling Bullshit: Data Reasoning in a Digital World: a course on detecting and defusing logical and statistical inconsistencies
ChemSpider: chemical structure database providing fast text and structure search access to over 67 million structures from hundreds of data sources.
The Deep Sea: Interactive scrolling website that lets you explore the inhabitants of the ocean as you scroll deeper and deeper down into its depths
Falstad Educational Applets: basic demonstrations of math, physics, and engineering concepts
How Many People Are In Space Right Now: a simple counter for how many people are currently in space
JPL/NASA Educational Resources: resources from the Jet Propulsion Laboratory featuring NASA missions and science
Planet: Imaging the entire Earth, every day; satellites taking photos of the Earth’s surface constantly
Project Apollo Archive: photos from the Apollo space missions
San Diego Natural History Museum Education Resources: videos, curriculum, and 3-D models of natural history topics
The Women Who Changed Science: the stories behind women who have won Nobel Prizes in science