Response: Rare and Singular Talent | Science
fx-100AU PLUS, 2nd edition Scientific Calculator - Casio Education - Australia
Aged 20 and the fastest human calculator in the world - BBC News
Mental Math and Calendar Calculations | Matt Baker's Math Blog
The Great Mental Calculators. By S. B. Smith. (Pp. 374; illustrated; $15.00.) Columbia University Press: New York. 1986. | Psychological Medicine | Cambridge Core
When Should You Let Your Child Use a Calculator?
Page 1259 - theCambridgehandbookofintelligence1
Zerah Colburn, a mental calculator, as a child free public domain image | Look and Learn
UCAT Calculator: 6 Tips for Using the UCAT Calculator - Medic Mind
Weapons of maths destruction: are calculators killing our ability to work it out in our head?
Trendz Abacus (@trendzabacus) / Twitter
Secrets of Mental Math: The Mathemagician's Guide to Lightning Calculation and Amazing Math Tricks by Arthur T. Benjamin | Goodreads
Global Child Prodigy Awards
This Classic Calculator Was Literally Reverse Engineered From the Bare Metal - IEEE Spectrum
What Is Mental Math? How to Ditch the Calculator | Reader's Digest
The Great Debate: The Role of Calculators in Math Education
PDF) The Great Mental Calculators: The Psychology, Methods, and Lives of Calculating Prodigies, past and Present
Mental Math - Learning to be a Human Calculator
Sorotouch Malaysia | Kuala Lumpur
Aged 20 and the fastest human calculator in the world - BBC News
