4 Inventions

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Alphabet We learn our ABCs when we are very young. We use the alphabet to write our name, read a story, and type on a computer. Each letter stands for a certain sound. Our alphabet developed over thousands of years. Before the alphabet, ancient Egyptians wrote with picture symbols called hieroglyphics Books help people find information to use and stories to enjoy. It's a fact! A pangram is a sentence made up to include all the letters of the English alphabet. One example of a pangram is "The quick brown fox jumps over the lazy dog."

There are 26 letters in the English alphabet. We use the alphabet to read and write.

Glass Glass is one of the most useful materials in the world. It can be finer than a spider web or stronger than steel. There are many things made of glass that are around us every day. Glass is made by melting sand and other materials together. Glass may be blown into a bulb shape, squeezed, and stretched. Look through the glass window to see outside. Eyeglasses help people to see better. You can see the numbers through the glass face of a wristwatch.

A drinking glass holds a beverage like water or juice. It's a fact! People probably first made glass around 3000 B.C. in Egypt or Mesopotamia