Study guides
Evidence-based study guides built on learning science. No “study hacks,” no filler. Just proven methods applied to specific subjects.
Subject guides
How to study specific subjects using active recall and spaced repetition.
BiologyHow to study biology using active recallBiology rewards recall, not rereading. Learn how to study biology using practice questions, pathway mapping, and spaced repetition for long-term retention.ChemistryHow to study chemistry: from concepts to problem solvingChemistry requires solving, not memorizing. Learn how to study chemistry using worked problems, reaction practice, and active recall for lasting understanding.
Study methods
Deep dives into evidence-based study techniques that actually work.
Active RecallActive recall: the study method that actually worksActive recall is the most effective study technique proven by research. Learn how to use self-testing, retrieval practice, and question-based studying to retain more.Spaced RepetitionSpaced repetition: stop forgetting what you studySpaced repetition beats cramming by scheduling reviews at optimal intervals. Learn how the forgetting curve works and how to use spaced practice for any subject.
Exam prep
Subject-specific exam preparation strategies built on learning science.
Our approach
Every guide is built on cognitive science research, primarily Roediger & Karpicke (2006) on retrieval practice and Dunlosky et al. (2013) on effective study strategies. We don't publish generic “tips.” Each guide applies active recall and spaced repetition to the specific demands of that subject.