Phosphorus is a chemical element with symbol P and atomic number 15. As an element, phosphorus exists in two major formsâ white phosphorus and red phosphorus âbut due to its high reactivity, phosphorus is never found as a free element on Earth. Instead phosphorus-containing minerals are almost always present in their maximally oxidised state, as inorganic phosphate rocks.
Ages & Stages â Preschool Children. Three and four-year-old children are often called preschoolers. Preschool children want to touch, taste, smell, hear, and test things for themselves. They are eager to learn. They learn by experiencing and by doing. Preschoolers learn from their play.
Chores: Ages 4 and 5. The great thing about preschool aged kids is that they are still fairly motivated to help. Preschoolers also love individual time with adults. If you take some time to teach them new chores one on one, they usually love it. Many kids at this age are ready to do chores without constant supervision.