--> 348 practice questions with expert explanations in 32 chapters and 12 categories
--> full theory in 32 chapters with over than 200 examples
--> the only app with student - produced response exercises (grid-in)
--> practice on each chapter and each category separately - play & learn
--> a different test for each student.The test questions are selected randomly from the 348 exercises.
--> the only app with student - produced response exercises (grid-in)
--> practice on each chapter and each category separately - play & learn
--> a different test for each student.The test questions are selected randomly from the 348 exercises.