Access Excellence puts high school biology teachers in touch with their colleagues, scientists and critical sources of scientific information. This is a great site with links to animations, 3D images and other goodies. Mr. C's Science World presents teaching stratagies which can be useful at all levels of education. Included in this site are links to electonic portfolio assessment, methods for citing web documents and links to research information on technology in the classroom. To assist you in using the internet, links are supplied that will allow you to search for particular topics of interest.
All search engines work using keywords.
For example, if you need information on Nucleotides, go to one of the search engines and type in nucleotides. A list will be generated that will contain all the sites dealing with them that are available on that search engine. Each search engine has its own listings. This is one of the largest search engines. It claims to be able to search through 8 billion words on 16 million web Pages.