Curriculum-based interactive easy-to-use electronic textbooks with in-depth instruction from which students can self-teach, practice with lots of understandable help & do better in their classroom and prepare for the SAT/ACT by working from a menu of clickable topics, intro's, examples, questions, step-by-step help, 30-question printable tests with or without solutions. Patience for the perplexed and fast as the brightest -- it's up to the student. Extensive VOCABULARY sections and review of pre-requisites included. Print FLASHCARDS of theorems & definitions!