Calcular el porcentaje de oxígeno en la atmósfera

Si quieres un experimento fácil, un experimento para calcular el porcentaje de oxígeno en la atmósfera, echa un vistazo a este.

Earth science lab: rain gauge creation

My middle school students have been doing our earth science unit. In this case, it is the atmosphere unit, and as part of it, I have decided to include an earth science lab: the creation of a rain gauge that we can place in a safe place on the rooftop of the school building to…