Educational Games:

SuccessMaker  -- A great program for both reading and language arts

ABCYa.com  -- Educational games for K-5

Fun4theBrain

Scholastic 

 EZ School Games  -- Educational games for all grades in many subject areas.

Learning Games for Kids - Educational games site K-5

Language Arts

TVIS Library

AR Book Finder

RenPlace

Pearson Reading Street 

Math

https://www.pearsonrealize.com/#/

Math Curriculum 3rd Grade

Math Curriculum 4th Grade

Math Curriculum 5th Grade

Math Fact Cafe

Math Manipulatives at Math Playground

National Library of Virtual Manipulatives

Science and Social Studies

Science Curriculum

History/Social Science Curriculum