Digit Span Memory Game

SPAN // digit recall instrument

READY

Mode

Starting length

3

Speed

Enter the sequence

Session ended

0

longest span recalled correctly

Session history

No sessions recorded yet in this browser.

Digits are generated locally each round. Stats are stored in this browser only.

Pharmaceutical Chemistry 1A (Organic Chemistry 1) - Learning using Logical Flow and Spaced Repitition strategies

Organic Chemistry I — Reaction Notebook

Pharmaceutical Chemistry IA · adaptive learning map · spaced repetition (SM‑2)

Concept Map — Logical Chain

Not started

Learning

Mastered

Due for review

Progress is saved to your account automatically (window.storage) so reviews are timed correctly across visits — it is not shared with other users.

N-Back Trainer - Working memory / cognitive training

Working memory / cognitive training

N-Back Trainer

On every trial a square lights up on the grid (and, in audio modes, a letter is spoken). Your job: decide whether the current stimulus matches the one shown N steps back in the sequence. Press match as soon as you notice a repeat — scoring below tracks hits, misses, and false alarms in real time.

Setup

N-Level

Speed

Mode

Trials

20

Sound cues

Spoken letters on

TRIAL 0/20 N = 1 VISUAL

Session results

Run a session to see your hit rate, false alarms, and reaction time here.

Trial-by-trial trace

Hit Miss False alarm Correct rejection

N-back difficulty comes from load, not speed — if 2-back feels easy, raise N before you raise speed.
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