Interactive Science/Math

Howtosmile.org, from the University of California, is an online collection of thousands of hands-on interactive science and math activities dedicated to making learning exciting and engaging for everyone. All activities are freely accessible. Howtosmile.org, funded by the National Science Foundation as part of the National Science Digital Library, brings together a consortium of science museums across the country to empower educators working with students in science, mathematics, engineering, and technology.