Reading - Starfall
This is a site where children have fun learning to read. - a great interactive site for readers of a variety of different levels.
Here is a site that has flashcards for practicing instant recall of addition and subtraction facts. You can also access flashcards for multiplication and division.
Variety of First Grade Skills
This is a great site to find a variety of different skills on the first grade level - all subject areas!!! :) There are also practice tests and additional resource sites.