By purchasing this logger from EnergyTeachers.org at a deeply discounted price, I agree to provide EnergyTeachers.org with a written account of how my students and I used the logger in the same school-year we received the logger, to be submitted to ideas@energyteachers.org or on the web-forum at http://energyteachers.org by the end of the same school-year. For help, contact energyteachers.org by using the link at the bottom of the home page. Signed: Date: