Providing a website featuring non-downloadable educational lessons and information in the field of mathematics and science for children and adults; Providing on-line, non-downloadable videos featuring educational lessons, problem sets and solutions to problem sets in the fields of mathematics, science, computer technology and engineering

Audio recordings featuring educational lessons, problem sets and solutions to problem sets in the fields of mathematics, science, computer technology and engineering; Downloadable video recordings featuring educational lessons, problem sets and solutions to problem sets in the fields of mathematics, science, computer technology and engineering; Sound recordings featuring educational lessons, problem sets and solutions to problem sets in the fields of mathematics, science, computer technology ...