Spark discussions life characteristics with this simple demonstration. Place raisins in a beaker filled with carbonated water. Raisins will rise and sink.
I have used this demonstration every year to introduce the scientific method. The worksheet below is optional and includes instructions for writing a lab report and doing a more involved investigation, but for the beginning of the year, I prefer to just have students observe and give their suggestions for how to test various hypotheses.…
A simple demonstration using bromothymol blue to show students how the scientific method can be incorporated to determine why the chemical changed color after you blow into it with a straw.