Tell you students a fact that the Earth is almost 4.54 billion years ago. The first creatures on the earth were called as Amoeba. They are very small. Even this small full stop can have a thousand of amoebas.
Math Skills
Conversion of Weights in kg and g to g and vice versa.
Comparison of Weight in 2 or more units with conversion.
Addition of Weights of 2 units (kg-g) without carry over between units.