Third week of school

The school year is now 2 1/2 weeks old. I missed the first week as my wife was thrown from a horse while on vacation in Utah. Fortunately there was no nerve damage but she had to have C5-C6 vertebrae fused. In the first days of school I have concntrated on measuring length ( in imperial system and the metric system) and mass in grams. We have spent a day discussing the difference between variables, vlaues and relations between these variables. I have used the program "Understanding Science". This will all lead well into our inorganic crystal section.