Digital TapWater Tour, Classroom investigation of how and why the characteristics of tap water can vary and affect everyday activities, Background information, test materials included for pH, chlorine, hardness, copper, iron, With Instructor, Student Manuals
KidWind Balsa Blade Sheets, very lightweight and stiff, and it is perfect for making experimental wind turbine blades, for College, High School, and Middle School Science, Pk100