Session Complete

Brain Age

Accuracy 0%

Speed 0s

Max Streak 0

Operations Total: 0

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About

Mental arithmetic is not merely a school skill; it is a cognitive exercise that strengthens working memory and neuroplasticity. This Math Speed Drill uses an adaptive algorithm to keep you in the Flow State - the optimal zone where difficulty matches skill level. Unlike static flashcards, this tool adjusts real-time based on your reaction velocity.

We calculate a fictitious Brain Age based on two variables: t (average time per correct answer) and e (error rate). The theoretical minimum is 20 years old. As reaction time decays or errors increase, the calculated age rises, simulating cognitive load.

Formulas

Standard Scoring Algorithm

Points = n∑i=1 ( Base × Multiplier_i )

Accuracy Calculation

Acc = CorrectTotal × 100%

Reference Data

Metric	Formula/Logic	Implication
Brain Age	20 + RT × 1.5 + Errors × 2	Lower latency reduces age. Mistakes add years.
Streak Bonus	Score += floor(streak ÷ 5) + 1	Consistent accuracy rewards exponential points.
Adaptive Range	Max = 10 × log(Level + 1)	Difficulty scales logarithmically, not linearly.
Division	Z only (Integers)	No decimals or remainders.
Sudden Death	FALSE tolerance	Game ends on 1st error.

Frequently Asked Questions

It is a heuristic metric. We start with a base age of 20. Every second it takes you to answer adds 1.5 "years", and every wrong answer adds 2 "years". To achieve a score of 20, you must average under 1 second per question with 100% accuracy.

The tool uses an "Adaptive Flow" system. If you answer three questions consecutively in under 2 seconds, the number range expands (e.g., from 1-10 to 1-20). If you make a mistake or answer slowly, the range contracts to rebuild your confidence.

Yes. The algorithm specifically generates "integer-friendly" division problems. You will never encounter 10 / 3 = 3.33. You will only see 12 / 4 = 3.

In Standard mode, a wrong answer just breaks your streak and deducts time. In Sudden Death, a single incorrect input ends the game immediately, regardless of remaining time.