Just the name "NASA" inspires STEM confidence! Well they certainly deliver. There are many different STEM challenges you can download for FREE from the NASA site. These challenges support STEM practices in Science & Math as well as connecting to literature and careers. Thanks to Freda Gather, Science Lab Teacher @ Bryant ES, for sharing!
Direct Link to NASA Educator's Site -
http://www.nasa.gov/audience/foreducators/k-4/index.html#.UycEoKhdXh4
List of Links from A-Z -
http://www.nasa.gov/audience/foreducators/topnav/materials/A-Z_Pubs.html#A