San Diego Zoo Polar Bear Cam: http://www.sandiegozoo.org/polarcam/
Teaching the Seasons: http://twistynoodle.com/mini-books/seasons/
Separating Mixtures: http://www.metrofamilymagazine.com/November-2012/Simple-Science-Experiments-Separating-Mixtures/
Science Center Activities: http://www.kellyskindergarten.com/science/science_center_activities.htm
Properties of Metals: http://www.sciencekids.co.nz/metals.html
Sensory Tubs for Preschool: http://www.hubbardscupboard.org/activites_for_2_s.html#MonthlySensoryTubIdeas
Freebies for Science Teachers: http://www.nsta.org/publications/freebies.aspx
MIT Open CourseWare: http://ocw.mit.edu/courses/materials-science-and-engineering/
Virtual Sky App: https://itunes.apple.com/us/app/pocket-universe-virtual-sky/id306916838?mt=8
Elementary Science: http://edu.symbaloo.com/mix/elementaryscience2