On the third day of creation Hashem created the land.  We learned that  the biggest parts of land is called a continent. There are seven continents on the Earth- North America, South America, Europe, Asia, Africa, Australia and Antarctica.
There are different kinds of land. Some land is flat; we call it a plain or valley. Some land is made of rocks; we call it a mountain. Some land is made of sand; we call it desert. A land that is surrounded by water is called an island.

What is land made up of? Rocks, soil, and sand... We took some soil from our school backyard to see what it is made of. There we found sand, little rocks, and humus. What is humus?  Earth worms that live in the soil eat parts of dying plants and animals making them into humus - an important part of soil that contains food for growing plants. You say- yicky, we say- science!

 We also learned that rocks are a part of land, they can be different in many ways. Some rocks are too big to hold it in our hands. A rock can be as big as a mountain.

Other rocks are so small that we can hold thousands of them at once, thousands of grains of sand. It  start as larger rocks, which are broken down to the grains of sand as rivers carry them down stream.