PBS is a great website for kids to play and explore with. They can click on their favorite character or show and do some fun games and projects.
Scholastic Kids is another fun website. Student can play games, do projects and art. Also get information about new books and some of their favorite characters.
http://www.scholastic.com/kids/
ABCMouse.com is a great web based classroom that we use weekly in class. Each child has their own avatar and they can work on kindergarten skills at school and home.
https://www.abcmouse.com/home#abc/parents/class_login
This is a great site to work on Reading skills. Students can work on letter sounds and recognition or reading.