Math
https://www.mathplayground.com/math-games.html
http://nlvm.usu.edu/en/nav/grade_g_1.html
https://www.coolmath4kids.com/
http://www.kidscount1234.com/mathcentersandgames.html
Literacy
Story Starters
Alphabetical Order - Beginner
Alphabetical Order - Increasing Levels - Needs Flash
Scrambled Sentences
Cause and Effect Comprehension
Reading Comprehension Game
Word/Spelling Links
Word Games
Unscramble the Words
Dolch Word Lists
Spelling City
Spelling
Science
https://www.billnye.com/home-demos
http://www.brainpop.com/
http://kids.nationalgeographic.com/kids/
http://www.seewinter.com/