Can I explain the concepts covered in the related material?Because the exams don’t just duplicate the lab activities, it is also important to understand concepts in order to handle the variation in tasks provided in the exam. Note that I’m suggesting that you be able to explain concepts, not just understand them. Relax! You won’t be required to do any explaining as part of the exam. However, being able to explain something is an informal but useful measure of whether you understand something. Enlist a friend and try explaining concepts. You’ll discover quickly the concepts that you’re solid on and the ones that could use some more attention.