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"Spacewalk is a new multiplayer game in which players explore the International Space Station. The game is a free-form game. Spacewalk players take on the roles of astronauts in the International Space Station."

Free online pdf -> jpg converter

Download this free lesson plan template (PDF)

10 sites that offer quality science-based interactives

"We humans do like to insist that we have free will, and that whatever we choose to do is entirely our own decision. But about one third of us are infected with a certain parasite. Usually, if you're not pregnant or immunocompromised, this infection does not cause too many problems. But sometimes, this infection can change your normal behavior, and even increase the chances of schizophrenia and suicide."

"AudioSigGen is a free and simple Audio Signal Generator"

Free Science Journal for kids in upper elementary school.

Welcome to the Global 2013 STEMx Education Conference, the world's first massively open online conference for educators focusing on Science, Technology, Engineering, Math, and more. The conference will be held over the course of three days, September 19-21, 2013, and will be free to attend! STEMxCon will be a highly inclusive event that will engage students and educators around the globe and will encourage primary, secondary, and tertiary (K-16) educators around the world to share and learn about innovative approaches to STEMx learning and teaching. The call for presentations has been issued. Register as a member of this conference network to be kept informed! See the conference information and welcome HERE and the menu links to the left and at the top of each page.

Here is a stockpile of free articles from past issues of ChemMatters and the teacher's guides that accompany them. These would be a great supplemental resources for chemistry and physical science teachers.

Compare sizes of planets with this free webtool.

free biology images, including organisms of each kingdom, human biology, histology

DIY Sun Science is a free iPad app from The Lawrence Hall of Science. The app features directions for hands-on lessons about the sun. The lessons are a mix of activities that students can do on their own and activities that they should do with adult supervision. All of the activities use common household goods. Some of the activities that you will find in DIY Sun Science are measuring the sun, making UV detectors, detecting solar storms, and cooking with a solar oven.

Illume does this by offering the world's largest database of syllabi; reading lists; course notes; text and trade books; newspaper, magazine and journal articles; videos; case studies; simulations; problem sets; lecture presentations; and other instructor and student materials.  It has just been introduced and it is completely free for all to use. While it is designed for university instructors, high school teachers looking to assign learning materials beyond textbooks will also find it very useful.

Download this free lesson plan template (Docx)

Free online educational magazine for teachers. This issue has a STEM theme.

A free educational resource about the science of car crashes for grades 5-12 STEM classrooms.