There's a very cool slideshow on the Discovery Channel site in
recognition of Earth Day 2009. The collection of photos that
make up the "On Earth Day, a Bird's-Eye View" slideshow are
beautifully done and are accompanied by explanatory text that
highlight the impact of climate change -- from dust storms to
floods to volcanic eruptions and earthquakes. The imagery is
amazing - and certainly good for classroom sharing. Geodesic
dome math project: A model dome like this can be made in any
size (as long as you figure out the relative lengths of the
struts). This one is pretty big! Born on May 15, 1863: Frank
Hornby, an inventor whose "toys" included Meccano, an
engineering construction set of nuts, bolts, and strips of sheet
metal. Hornby first devised the system for his children. When he
moved on to mass produce... Christina Ren, a high school junior
and founder of Science Alliance Network believes student-to-
student mentorship is key to keeping young kids excited about
science.