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Kids & Family |
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What shape is an egg?  There are lots of interesting shapes - some natural, some manmade. For example, a dinner plate and a wheel on a bike or a skate are round circles. A ball or an orange is a sphere, a circle that has depth. Tree trunks, soda straws and the tubes that hold paper towels are cylinders. You might eat a scoop of ice cream in a cone or ride on a road that has safety cones set out. Maybe you had a slice of pizza or a slice of pie shaped like a triangle at lunch today. You can walk on a sidewalk made up of sections that are squares. A square with length, width and height is called a cube. Your television set is probably shaped like a cube and some freezer trays make little blocks of ice that are cube shaped. Usually writing paper is a rectangle and so is an envelope. You can probably find many things around you that are these shapes and other shapes, too. While you're looking around at shapes, can you think of the name for the shape of an egg?  If you said an egg is an oval, you're right! The fancy math words to describe an egg shape are oblate spheroid. The word spheroid means that the egg is like a sphere, but isn't exactly a sphere. That's because an egg isn't perfectly round. The word oblate means that the poles of the egg are flattened or depressed. So, an egg is a not-quite-round sphere with flattened sides. You could say that it's an oval with one end larger than the other. Now that you know this, can you draw an egg?  To draw an egg, you can start with a circle. Then, pretend that it's a round water balloon. You can pull on the top and bottom of the balloon (use your pencil to stretch out the ends, make them longer). Or, you can push in on the sides (move the lines forming the sides closer toward the center). Either way, you'll get an oval that's like an egg. |
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