MemoFlash is a flashcards app-based tool that improves upon Spaced Repetition Systems (SRS). It helps everyone to study concepts, ranging from chemistry to social sciences, and custom-made topics.
- Login and sign-up page for users (Hui Ting)
- Home page - Displays all the default flashcards (Samuel)
- Learn (flashcards page) - the user gets to learn concepts using flashcards. (Bryan)
- Test - the user gets to access his/her own knowledge of the topic of choice.
- Multiple choice style - there will be multiple choice questions, and the user selects the correct answer. (John)
- Recall answer with flashcards simply by clicking - after recalling the piece of information, the user clicks the flashcard to view the correct answer. If user gets it correct, he/she presses "I got it right", and if wrong, vice versa. (John)
- Recall answer by typing answer out - the system will check if the answer typed out matches the correct answer. (Samuel)
- Profile page (Victoria)
- App UI and logo (Victoria)
- Calculates the timing to review the flashcards (Samuel)
- Speedrun feature for users who want a challenge, and let them edit the time they have to answer (Hui Ting)
- Information Depository for users to key in notes outside of the flashcards (Hui Ting)
- Image Relaxation (Bryan)
The forgetting curve can help remind the users when would they almost forget that information (the exact date and timing). This is done by sending them a notification when the retainability has reached a certain level as time passes. For example, a user has finished a deck of flashcards, and the app estimates that he/she will forget about 70% of information in 6 days. This means that R is reduced, until about R = 1 - 0.7 = 0.3. Hence, it will send a notification 6 days later to the user.
The Forgetting Curve formula has to estimate R, as t, passes. Also, in the equation, another factor that determines R is S. However, S is assumed to be the same for everyone. This means that the equation can assume that everyone is equally good at remembering information. In reality, it is unfortunately not the case! This also shows that learning may not be personalised for everyone, based on the equation. Everyone is treated the same, so a user who may have trouble remembering is assumed to have the same standard of remembering information, just like everyone else. Hence, to personalise learning abilities for everyone, aka personalising S, we introduce another equation to estimate that.
To estimate t for each flashcard question, we would take the timestamp of the current answer - timestamp of last correct answer. To estimate r for each flashcard question, we would prompt the user to rate the confidence of each answer, be it correct or not.
Research on metacognition has suggested that to think about our own thinking, we need to monitor our understanding, see our confidence in answers, then finding out a solution from there. To rate your confidence, simply indicate a sclate of 1-5. The more 1s rated, the more likely to see new cards since those cards rated 1 are new to the user. Let's say we have 10 flashcards. Hence 10 S values are calculated with the above formula. based on the 10 S values, calculate a good estimate of S overall, which is the mean of all 10 S. Substitute it into the Forgetting Curve Formula, and you will get a curve. The app will then use that curve to estimate the duration, as mentioned above. (Refer to Explanation of New Feature if not sure)
Referenced by Peaceknight05