These little water testing kits are very economical and would be great for science fairs or student-based inquiry projects.
Each one comes with a little student workbook that helps kids test for alkalinity, hardness, pH and a bunch of other things. I am a big proponent of data collection in the classroom, so this is right up my alley, and probably your too.
For example, have you ever wondered about the quality of your bottled water versus that of other companies? Or, is bottled water really better than regular ole tap water? Now your students can find out!
I won’t spoil the fun for you, but let’s just say I was a little surprised at the results.