If you have trouble accessing a specific article, ask the library for help or try the following:
You may want to search databases that focus on specific information, such as science or education.
These databases contain information on a variety of sources, including science and education. JSTOR is best when looking for older articles.
These databases contain a variety of information about science--much of it very specific and technical.
These databases may contain information about science experiments in the classroom.
Refresh your memory on certain concepts.