Australian Bureau of Statistics
www.abs.gov.au
This website is obviously useful to maths teachers, but it has a wealth of information that you can use in all curriculum areas. Even better it has an education resource section with a variety of resources already prepared for teachers and students. I can't give you a URL to take you straight to this section because it is a string of letters and numbers a mile long. Here's how to get there from the homepage.
Click on Education. This takes you to the Education Resources page where you click on Teaching Tools and Classroom Activities to get to the Education Services page. There are three main sections on this page.
Lesson Plans gives you access to a large number of lesson plans for different age groups and curriculum areas, not just maths and statistics.
Student Activities has some interactive programs for students.
Statistical Concepts Resources deals specifically with statistics and includes an excellent on-line introduction to statistics called Statistics A Powerful Edge.