Metals
Metals are generally hard, shiny materials. It is possible to bend or hammer them into different shapes. Three common examples of metals are iron, copper, and aluminum. Any rock material that contains enough metal in it to be mined is known as an ore. Metals can be combined to make tough, new materials called alloys.
Aluminum is used to make foil and pipes; copper is used for pots exposed to wet or damp air. Rusty metal is weak and crumbles easily. Metal objects cab be treated, however, to prevent rust.
Money
We use money to pay for the things we buy. Each coin and bill is worth a different amount. Bill use complicated patterns, water-marks, and special paper that is difficult to fake or copy. Some people save their coins in a piggy bank.
Health
Staying healthy is important to keep your body working properly. A heapthy diet gives your body energy and helps it repair itself. Exercise makes your muscles strong and keeps you fit. Playing sports is a wonderful way to exercise. Germs can cause illness and infection. If you scrape your skin, you should clean it to kill the germs.
