MAKING and TESTING ELECTROMAGNETS

There is a very practical and simple way to make and test electromagnets in science laboratory. After you are done discussing the theory of electromagnets, it is time to allow students some hands-on activities, to thoughtfully remember the concept. This is not a grand experiment though, but at least your high school students could look into how and what are the necessary materials needed to make a simple electromagnet, and test its strength afterwards.

SIMPLE EXPERIMENT: LAW OF REFLECTION

This activity investigates the rule of reflection, which focuses on obtaining, collecting, and considering evidence. The students should learn and remember the basic terms that are associated with the law of reflection.

When you look in a mirror, you can see a reflection of yourself.  If you look at texts on the newspapers or magazines, they appear to be reversed, which is the way light is reflected by a mirror. How can we investigate this phenomenon? What is reflection? What is the law of reflection?

In this practical, you need plane mirrors, concave, and convex mirrors.  Your focus is on making measurements accurately, recording the results, and making conclusions from the evidence collected.