Unit 8 Machines and Objects

This document discusses different types of tools, machines, and inventions. It explains that tools like scissors, pliers, spoons, and hammers make work easier. Simple machines such as pulleys, ramps, wedges, and wheels are also introduced. More complex machines include computers, washing machines, radios, bikes, telephones, and cars. Important inventions that have improved modern life are noted as the television, telephone, wheel, computer, and radio.