Solar Sierra and Windy Schor represent EnergyTeachers.org in Second Life, building virtual objects for exploring real-life technologies, and holding meetings and discussions between educators and interested people. Windy uses the […]

The Cantor Bernstein Schröder Theorem of Set Theory   The EQUIVALENCE THEOREM (a.k.a. Bernstein-Schröder Theorem) Modern set theory originated between 1874 – 1884 from the researches of Georg Cantor at Universität Halle, Germany. Around 1895, Cantor presented the EQUIVALENCE CONJECTURE: Given sets A and B, if A is equivalent to a subset of B and […]

It is that time again! The annual Science Fair will take place this year on Saturday, June 27 from 7 AM to 10:30 AM PDT. This year all curators of […]

In the months of July and August, our weekly presentation hour is replaced by the Science Cafe. Text chat conversations Subject selected by means of a Poll on the calendar […]