Phosphene is a truchet tile board with a selection of tile shapes, colors, and board…
Month: June 2025
Pirouette
Pirouette is a Spirograph clone (sample gallery) with a larger number of gears, 30 standard…
Lectures on Elementary Mathematics
Lectures on Elementary Mathematics is an 1898 translation by Thomas J. McCormack of lectures delivered…
Eddington on Relativity
Space, Time and Gravitation by Sir Arthur Eddington, completed at Distributed Proofreaders (DP) in 2009,…
Einstein on Relativity
This installment of Free Online Math Materials dips into physics to bring you two Project…