Our interactive lessons provide self-paced instruction. We began designing our lessons in 1998 for mainstream U.S. students in grades 5 through 8. Over the years, we have found that many other students can benefit from our materials, including special needs students of all ages, gifted students in grade 2 through 4, remedial high students, and adult GED students. Our complete curriculum, which includes 168 interactive lessons, plus extensive libraries of worksheets, games and puzzles, is available only on CD or by download. You may use our free sample lessons only on this site. Note that your browser must be JavaScript-enabled for them to work properly.
We have thoroughly tested our lessons in several browsers, on several platforms, and at various screen resolutions to ensure a quality presentation. Please note that we do not support beta browsers as they may not work properly.
| Platforms |
| Windows 7, Vista and Macintosh |
| Browsers |
| Firefox |
| Chrome |
