The color scheme is subtle. The site uses minimal graphics. Text varies according to layout. Each section of the site is a complete unit. The options and menus change slightly to conform to the needs of a section.
Viewers can use the navigation menu at the top of each page to get around the site.
Access is limited to members, but memberships for secondary and higher education students and educators can be purchased online for a fairly low price. Educators and students can set up a free trial membership. Users will have access to other science resources on the Web. This site is a good resource for teachers. Inc. All Rights Reserved.