This highly effective app has been written by experienced teachers and examiners for the OCR 21st Century GCSE Core Science specification. Watch the short animations, take the related tests, challenge your friends, track your scores ... A simple and fun way to revise in short bursts, whenever youre in the mood. Key syllabus topics are presented in beautifully clear animations that quickly take you through the essentials ... Pause at or skip through to concepts you need to revise Take the short tests: each test has 10 questions and the time limit is 10 minutes Check your answers and read the detailed Explanation of the right answer Aim for the maximum score by repeating the tests: the question order and answer order changes each time you take the test! Check your progress: compare your Latest and Previous scores for the same test Challenge your friends or random players to a game: the app selects a random test; the highest score or fastest time (if its a draw) wins. Once again, you have 10 minutes. Share your Scores with your teacher and post them to social media.