Here are some great interactive on-line activities appropriate for preschool and kindergarten age children.

Mathematics

1. http://www.sums.co.uk/playground/ss5/playground.htm 
2. http://www.bbc.co.uk/schools/websites/4_11/site/numeracy.shtml 
3. http://www.oswego.org/ocsd-web/games/DogBone/gamebone.html 
4. http://www.crick.northants.sch.uk/assets/Flash%20Studio/cfsmaths/Number%20Track/ntrack.swf 
5. http://nlvm.usu.edu/en/nav/vlibrary.html 
6. http://www.bbc.co.uk/schools/starship/maths/parkthepods.shtml 
7. http://www.sums.co.uk/playground/hd3a/playground.htm 
8. http://www.sums.co.uk/playground/c1a/playground.htm 
   

1. http://www.bbc.co.uk/cbeebies/funandgames/index.shtml