Spaced Repetition for Skills and Facts

Spaced repetition is a study method: review material after delays rather than repeating it many times in one sitting.

A simple schedule

For something worth retaining, try a quick review later the same day, then after roughly 1 day, several days and a week. Adjust based on difficulty.

Recall before rereading

Try to produce the answer first. Then check it. Retrieval gives you information about what you actually remember.

Use small cards

One prompt, one answer. For mental math, a card can ask “25% of 76?”; for cryptarithms it can ask “Can a leading letter be zero?”

Drop what is already easy

Spend more repetitions on material you miss and fewer on material you can recall reliably.

Educational note: these techniques are practice methods, not medical or cognitive-performance claims.