Make It Stick (Brown, Roediger, McDaniel)
beginnerThe definitive popular book on retrieval practice, spacing, and interleaving, written by the cognitive scientists behind much of the research.
Evidence & theoryBook5-6 hours
The Learning Scientists: Retrieval Practice
beginnerFree, research-backed guides and downloadable materials on retrieval practice and the other durable-learning strategies, aimed at students and teachers.
Evidence & theoryFreeArticles & downloads1-2 hours
Visit resourceRetrievalPractice.org guides
intermediatePooja Agarwal's practitioner hub with the 'Powerful Teaching' guides and concrete classroom and self-study retrieval techniques.
Evidence & theoryFreeGuides1 hour
Visit resourceAnki for self-testing
beginnerUse Anki not just for spacing but as a pure recall engine: every card is a forced retrieval attempt before you see the answer.
Self-testing toolsFreeDesktop & mobile appOngoing
Visit resourceQuizlet
beginnerFast way to build question-answer sets and run learn/test modes; handy for quick recall drills on definitions and vocabulary.
Self-testing toolsFreeWeb & mobile appOngoing
Visit resourceThe Feynman Technique (write-up)
beginnerExplain a concept in plain language as if teaching a beginner; the points where you stumble pinpoint shallow understanding for targeted restudy.
TechniquesFreeMethod guide30 minutes
Blank-page brain dump method
beginnerAfter studying, close everything and write everything you can recall from memory; the gaps are your study list. A zero-tool active-recall staple.
TechniquesFreeMethod guide20 minutes
Past papers and practice exams
intermediateThe highest-fidelity active recall is sitting full past papers under timed conditions; most exam boards and courses publish them free.
Practice question banksFreePractice tests2-3 hours each