I found some excellent interactive science and math websites for elementary school and middle school.
Why use interactive websites? The use of these types of websites is natural for today’s students who are growing up in the technological world of information at their finger tips and interesting online educational games. These types of activities help students develop a better understanding science and math concepts.
Example Interactive Science Videos for Grades 5 & 6
These interactive activities are developed and provided for free by Harcourt School Resources
Additional Interactive Math and Science Resources