All subjects: PBS Learning Media for NYS teachers: many free videos and resources for NYS (join as a teacher or student)
All subjects: PBS Kids: free videos and games; including math, spanish, spelling, nature games and more!
Recess and Physical Education: GoNoodle gets kids moving. The link goes to their family information page. They have games and videos to get kids moving.
Physical Education: PE with Joe from the Body Coach TV: a YouTube video each day with a different Physical Education workout and trivia from England (parents and kids can do this together)
Science and Math: Inspire your children with lots of activities to do at home from National Geographic Kids