The english translation of this site is work in progress. Nonetheless several worksheets are ready for download!

Acid meter image

Acid meter

Hoe ACIDIC is the water? And how about soil? Examine the acidity of the soil or water in your area using some magical RED CABBAGE

Acid meter
Particulates meter image

Particulates meter

Let’s examine how much PARTICULATE MATTER is in the air. Tiny particles are floating in the air. We do not see them, but breathe them every day. Make a simple measuring device using a MILK CARTON and VASELINE

Particulates meter
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