Flashcards are widely used as a learning drill to aid memorization by way of spaced repetition.
They burn visual information into the brain as they engage active recall. Brain is given a clue on the front side and they attempt to actively recall the answer on the back. It means that learners are forcing their brain to remember a concept. This makes using flashcards such a compelling method of memorization.
With included notepad you can enter notes and reminders.
It is great way to learn and quickly memorize traffic signs.