4/04 County level breakouts of 3/30 material  Click here
4/05 Solar power calculations for the Blue Valley Kansas School District  Click here
4/06 A change of pace - earthquake near Nias Island south of Sumatra Indonesia  Click here
4/07 In return for much hospitality, an open letter to the people of Kyrgyzstan Click here
4/11 Solar technology impact in Uruguay Click here
4/12 Kaytn Forest reprised: Polish mathematician Stefan Kaczmarz  Click here
4/14 Counterpoint: Missouri cuts and National Strategic Goals  Click here
4/15 Districts: scholastic, diocesan, Congressional and legislative  Click here
4/16 Solar power calculations for San Francisco Unified  Click here
4/17 Solar power calculations for Oakland (CA) Unified Click here
March 2010 Chronology  Click here
4/18 Round numbers, hyperbole and circular reasoning about colleges  Click here
4/19 Norse terrorists, geometric achievements and STAR tests  Click here
4/22 Constructing regular heptagons Click here
4/24 Volcanonic covariance, eruption data and glacier melting in Iceland Click here
4/30 The after-math of the one day strike by Oakland Unified teachers Click here
5/04 Predictions for the British elections Click here
5/06 Web 2.0 Conference in San Francisco and Live Oak schools  Click here
5/13 Higher order cochleoid (snail-shaped) curves  Click here
5/17 Snows of Kilimanjaro slides - Sonoma, Marin, Contra Costa and Solano Counties Click here
5/21 Cochleoid swirls: oil plumes, ash clouds and Solano County schools  Click here
5/24 Answering readers' questions about Solano County  Click here
5/27 Historical Oil Spills  Click here
Chronology  Click here