Monitor zone: In this area you will find some concepts about covered topics.
Blackboard zone: Examples and graphics that help to understand the subject.
Test zone: Press "Now" button to get an operation to be solved. In some cases also you need to select how big (in digits) do you want the numbers.
Keyboard zone: To write your answer. Please, give time to each key to send its information to "your answer" window. Press "Enter " when ready or "Cancel" if you make a mistake.
Report zone: See here your results. If the "stopwatch" doesn't stop, that's probably because the "now" button has been hit repeatedly, in this case press again "Enter" button.
That's all folks, have fun !