This demonstration shows that the combination of yeast, sugar and water will produce a gas that can be collected. This provides students with an opportunity to draw on prior knowledge to identify the cellular process involved. Students also have a chance to predict the gas produced and determine a way to test their prediction.
Peergrade.io is a free website that allows teachers to provide a rubric for students to use to assess peer assignments. The website allows teachers to see student assignments and the feedback they... read more
Categories: Teacher Demonstration
A head on elastic collision between an object with mass M and an object with mass 3M traveling with equal speeds results in all the kinetic energy of the system being transferred to the smaller mass.... read more
In this demo, a polyethylene strip is charged by rubbing with wool. The charged strip is then used to charge a neutral object, a pith ball, by contact. This demo can be done as a student activity. read more