1. The Printing Press Before the invention of the printing-press, very few people knew how to read. In 1952, Johan Guttenberg invented the printing-press. He cut wood in the shape of letters. Put them together to words and sentences. Covered them with ink and presses paper on top of them. The first book that Guttenberg printed was the Bible. Invention Invented Wood Shape letters Words Sentences Covered ink Presses Bible לאה הלינגר מת"י פ"ת

2. The Submarine In 1775, David Bushnell invented the first military submarine, the Turtle”. In 1954, the USA built the first nuclear submarine, the Nautilus. Submarine Sub Marine Invented Turtle nuclear לאה הלינגר מת"י פ"ת

3. The Sewing Machine Years ago’ people sew clothes by hand. In 1844, Elias Howe invented the sewing machine. It helped people make clothes quickly. In 1921, Isaac Singer invented the first electric sewing machine. Today, sewing machines are like computers. Sew sewing Machine Invented Clothes Electric computers לאה הלינגר מת"י פ"ת