“Mathematics: a basic introduction” was written by Alan Graham, a lecturer with thirty years of experience in teaching mathematics at the Open University. Understanding mathematical concepts can be challenging. This introductory course provides...
Flying across border and going for trips seem far from many of us in the past two years due to the COVID-19 pandemic. By looking up the sky to imagine being a bird, we can fly anywhere without a passport! This naturalist’s guide introduces 280 representative...
Still remember your first time to come in contact with Chemistry? In my memory, it started with the image of an atom, H2O – the chemical formula of water and the most remarkable – the Periodic Table. How amazing and puzzling to find that all the blocks...
Under your feet, where you are standing on, beneath the cement layer and pipelines that are made by man, our earth is made up of layers of rocks. Learn how to identify rocks! Underneath our feet, the earth’s crust is made up of different kinds of rocks...
Multiplication and division are essential learning requirements for understanding basic arithmetic operations in Math at early childhood education. Young children are always frustrated with arithmetic because they do not really get what is...
