Some of my favorite online resources to save for a rainy day:

Interactive Learning Games and E-Books:

www.abcya.com

www.starfall.com/

https://www.getepic.com

http://www.exploratorium.edu/explore

http://www.storylineonline.net

http://www.education.com/games/

http://pbskids.org/games/

http://kids.nationalgeographic.com

https://www.brainpop.com

http://www.spatulatta.com

http://www.goteachthis.com/online-rekenrek-ideal-for-exploring-number-sense

http://kennedymath.weebly.com/rekenrek-activities.html

http://www.bookadventure.com/Home.aspx

https://www.firstbook.org

http://nationalgeographic.org/education/explorer-magazine/resources/