Textbooks and Workbooks Math in the Kingdom Delayed feedback. When the student makes a mistake, Math in the Kingdom corrects it immediately.
Immediate feedback teaches much faster than delayed feedback.
In textbooks, workbooks, and on chalkboards, explanations of how to do a problem are static. Dynamic and interactive explanations. Limited skill set. More complete skill set. The Learning Kingdom covers all the important basic concepts and skills that the textbooks and workbooks do.