Anki Flashcards will change your lifeWatch
Anki is an incredibly useful revision resource which incorporates active recall and spaced repetition through flashcards that run on an algorithm. This algorithm determines when you need to review a certain flashcard again for you and will notify you when you do. It's completely free and has honestly saved my grades.
Active Recall - the process of retrieving information from your memory without any obvious prompts/hints
Spaced Repetition - retrieving information at regular intervals so that it becomes engrained into your long term memory
Anki is especially useful for sciences and vocabulary for languages but also for memorising key concepts for more essay-based subjects too. It's great for any summarised information or stats you may need to remember in class or in the exam.
HOW TO SIGN UP
Just search up AnkiWeb- Account Register, input an email and create a password. Then to create a flashcard deck, press Create Deck and give it a name.
I hope this was helpful. For reference, I was failing half my subjects at the end of Y10 and I've just got all 6s, 7s and 8s in my GCSE Mocks