Fourth-grade students are learning about the Earth's features by testing
the effects of rain on the earth’s surface and the forces that cause
landforms to grow. In the experiment, they created three mounds of soil,
one large, one medium in size, and one small. They poured equal amounts
of water over each of the soil piles to investigate how rain affects
each of these landforms.
They also drew physical maps with legends to indicate different types of
hills, valleys and other landforms. They are learning how maps can
change over time, as Earth’s features change from weathering and erosion
of Earth's surface.