Here's another great science resource found by my wife. Biology Junction is a site created by a Biology teacher that has a HUGE amount of resources on Biology. The site has stuff related to the creator's classes, but also has a plethora of resources for all teachers and students.
This is one of those sites you have to explore yourself because you just keep finding more and more things.
The site has resource broken down by Biology subtopic, class, and type. There are class openers, games, lesson plans, labs and activities, information, links and so much more. There are study help guides, science fair help, teacher help, presentations, templates, test prep, notebook help, teacher resources, and the list keeps on going.
If you are a Biology Teacher or Student, you need to check out this site.