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
Density Set Brass, Set of 12 brass cylindrical bars of different length but the same diameter. Students learn that the density of a substance is constanteven as its mass and volume change. Comes in an attractive wooden holder