In this unit students have been learning about where soil comes from, and how it is made. Soil, which is the top layer of the earth’s surface, is made up of rock and mineral particles mixed with organic matter. Soil is vital to the existence of almost all organisms; plants grow in it, animals inhabit it, and people grow their crops in it. Soil is as essential as water, air, and the sun’s energy – but it cannot last forever, for it has been put at risk by harmful human activities. The world would be a very different place without soil, so we must do everything we can to protect it.
Composting with worms (a.k.a. vermicomposting) is a win-win situation. It gives you a convenient way to dispose of organic waste, such as vegetable peelings. It saves space in the county landfill, which is good for the environment. It gives worms a happy home and all the free “eats” that they could want. For those that have gardens or even potted plants, homegrown compost is a great way to feed and nurture plants.
Composting with worms (a.k.a. vermicomposting) is a win-win situation. It gives you a convenient way to dispose of organic waste, such as vegetable peelings. It saves space in the county landfill, which is good for the environment. It gives worms a happy home and all the free “eats” that they could want. For those that have gardens or even potted plants, homegrown compost is a great way to feed and nurture plants.
SOIL CLASSIFICATION
Students collected a soil sample from the school's nature study area. Approximately 1 cup was placed in a jar and covered with water. It was mixed thoroughly until it looked like a solution and was then left to settle for 3 days. We forgot to add detergent so it was not as easy to see the distinct layers. Otherwise we could classify the type of soil in our nature area based on this soil calculator.