Study Skillsi. How we learn
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Study Skills

How memory works, why passive reading fails, and the evidence-based techniques that actually make learning stick.

SkillsRead time8 minLast updatedJune 2026LevelBeginnerSections7
In this module

The spacing effect and active recall are two of the most consistently supported findings in learning research. This module explains why you forget and how to use your study time more effectively.

By the end you'll

  • Understand why cramming tends to produce weaker long-term retention than spaced practice
  • Know the difference between active recall and passive re-reading
  • Use interleaving and the SRS bucket system in your flashcard practice
7 sections≈ 13 min total

iHow we learn

How you study matters more than how long

Most people study by re-reading notes and highlighting. Research suggests these techniques feel productive but produce shallow, short-lived retention. A small set of evidence-backed strategies consistently outperforms them. They are the foundation of how this platform's flashcard system works.

This module walks through the core science. By the end you will understand why you forget, how to fight it, and how spaced repetition makes practice automatic.

iiForgetting

The forgetting curve

In the 1880s, psychologist Hermann Ebbinghaus memorised lists of nonsense syllables and tracked how quickly he forgot them. The result: without any review, we forget roughly half of new information within a day and about 70% within a week.

The insight is not just that forgetting happens. Forgetting follows a predictable curve, and a predictable curve can be interrupted. Reviewing material at the right moment resets the curve and extends how long the memory lasts.

The spacing effect

Each time you successfully retrieve a memory, the next forgetting curve is shallower. Space your reviews correctly and a fact that would have disappeared after a week can persist for months.
iiiActive recall

Active recall beats re-reading

Re-reading feels easy because the material looks familiar. But familiarity is not the same as being able to retrieve information when you need it. Research consistently shows that the act of retrieving a memory (testing yourself without looking) strengthens the memory trace far more than passive exposure.

This is why flashcards work. Flipping a card forces you to attempt retrieval before seeing the answer. The effort of trying, even when you get it wrong, produces stronger retention than reading the same fact ten times.

  1. 01

    Close the book first

    Try to recall before you look. The struggle is the learning.

  2. 02

    Get it wrong

    Failed retrieval attempts still strengthen the memory. Mark the card for review again rather than skipping it.

  3. 03

    Use your own words

    Restating a concept in your own words reveals gaps that re-reading hides.

ivInterleaving

Interleaving: mix it up

Blocked practice (finishing all of one topic before starting another) feels orderly and productive. Research suggests the opposite is often true for long-term retention. Mixing different subjects or problem types in the same session produces better results, even though it feels harder in the moment.

The difficulty is the point. When your brain cannot rely on the previous problem as a template, it has to identify what kind of problem this is before solving it, a deeper processing step that cements the knowledge.

Practical application

When reviewing flashcards, resist sorting by category. Mixed review sessions, across topics and modules, produce stronger retention than category-by-category blocks.
vSpaced repetition

Spaced repetition in practice

Spaced repetition combines the spacing effect with your personal performance. Cards you find easy get scheduled further into the future. Cards you struggle with come back sooner. Over time the system schedules each card just before you would forget it.

On this platform, cards live in one of three buckets: daily, weekly, and monthly. Rating a card Easy extends the interval beyond the floor; Repeat resets it. The ease factor adjusts automatically based on your history with each card.

Bucket minimums

  • Daily: at least once a day

  • Weekly: at least once every 7 days

  • Monthly: at least once every 30 days

viFlashcards

Flashcards

All cards
viiModule quiz
Module Quiz

Answer correctly to complete the module. Pass mark: 4/5.

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