Balancing weights

Yasmin Jayathirtha
Continuing from where she left off in the November issue of Teacher Plus, the author further explores the idea of building our own insturments to learn concepts in science. This time she looks at the old style weighing scale (takdi), which has by and large been replaced by the top pan balance.

A measure of Boyle’s law

In the series on science experiments, this article explains Boyle’s law and the experiments that can be done in the classroom.

Of moles and masses

How do we measure elements? What is a mole and how is the Avagadro number related to this unit of measurement? Find out from the experiments given in this article.

What is the size of a molecule?

One of the first lessons we are taught in chemistry is that all matter is made of atoms and molecules. And that these atoms and molecules are tiny particles? But do we know how tiny atoms and molecules are? There are experiments which can help us determine. This article mentions one such experiment.

Testing a hypothesis

This article explains how one can set up experiments either to prove or disprove a hypothesis.

Why experiments are important

Science teaching must emphasise both content and process, one without the other is meaningless. Content can be acquired from books and from experimentation. And experimentation is the process of science.

The metallic edge

Metals play an important role in the lives of human beings. Whether it is iron, silver, gold or copper, man has been associated with metal since the historic ages. Let us understand these metals better through some experiments.

Reactions of the halogens

Observing the reactions of the halogens, especially chlorine is quite easy with Small Scale Chemistry. Here we give some experiments that you could try out.

Elucidating Electrochemistry

Using the concept of Small Scale Chemistry detailed in the last issue of Teacher Plus, here is how you can experience concepts in electrochemistry.