Spaced Repetition

The Science

We forget most of what we learn—unless we review it at strategic intervals. Spaced repetition exploits the "forgetting curve" by reviewing information just before you'd forget it.

Why It Works

• Each retrieval strengthens memory
• Spacing increases long-term retention
• Effort during recall builds stronger traces

The Core Method

1. Create Retrieval Opportunities

Don't just re-read. Test yourself:

• Flashcards
• Practice problems
• Teaching others
• Writing from memory

2. Space Your Reviews

Optimal spacing schedule:

• Day 1: Learn the material
• Day 2: First review
• Day 4: Second review
• Day 7: Third review
• Day 14: Fourth review
• Day 30: Fifth review
• Then monthly

3. Use the Leitner System (Analog)

Five boxes of flashcards:

• Box 1: Daily review
• Box 2: Every 2 days
• Box 3: Every 4 days
• Box 4: Weekly
• Box 5: Monthly

Correct answer → move card up one box
Wrong answer → back to Box 1

Best Practices

Card Design

• One concept per card
• Question on front, answer on back
• Use your own words
• Add context and examples
• Include images when helpful

Session Structure

• Review daily (even 5 minutes helps)
• Add new cards in small batches (10-20/day max)
• Rate difficulty honestly
• Don't skip hard cards

Common Mistakes

• Making cards too complex
• Adding too many new cards at once
• Re-reading instead of testing
• Inconsistent review schedule