 
This activity, from Hagerstown Community College, uses snail eggs to teach anatomy and development to students of varying education levels. Elementary students examine snail eggs in varying stages of development using hand lenses, dissecting microscopes, and compound microscopes and discuss basic anatomy. Middle and high school students also use lenses and microscopes to examine snail development, but go into deeper detail in discussing anatomy and physiology, including conducting some experiments on the specimens. The activity includes directions and a handout.
HippoCampus is an extensive online resource designed to enrich secondary and post-secondary instruction in mathematics, the natural sciences, the social...
The Many Worlds of Logic is an online learning resource authored by Paul Herrick, a professor of philosophy at Shoreline Community College in Washington state....
What are the best ways to assess student learning in mathematics? The University of California at Berkeley and the Shell Center for Mathematics Education at the...
The American Museum of Natural History offers a variety of helpful resources to aid K-12 educators teach human origins and evolution. Educators may want to...
From the California Academy of Sciences comes the Science Notebook Corner, a resource designed to help K-12 science teachers support young learners develop note...
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A dense ball packs more mass in the same volume, so it has more momentum at any given velocity. Thus a dense ball travels further because it loses a smaller proportion of its kinetic energy to the surrounding fluid.
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