Throughout history, people have recorded ideas and important events in their lives and communities. Methods of writing have changed greatly over the years. Today, computers make a writer's job much easier and enable people to write and publish more material than ever before.
Long ago, it often took weeks for postal workers to deliver mail to people who lived far away. Today, mail is transported quickly by trucks and airplanes, and it usually reaches its destination in a few days. Postal workers deliver mail directly to homes, businesses, and mailboxes.
Fishers have provided food for thousands of years. Long ago, fishers had to fish close to land and used simple fishing tools such as knives, hoes, and spears. With the use of modern boats and fishing equipment, today's fishers fish far out in the ocean and catch a large variety of fish for market.
Farmers are important because they grow the food that people eat. Modern equipment enables farmers to grow more food for an ever-increasing world population.
Librarians lend and take care of books. Many years ago, the job of a librarian was simpler because librarians only took care of a few books and libraries were small. Most libraries today contain many books, magazines, computers, and other media equipment. Librarians today help people find information and show them new ways to find it.
For over two hundred years, individuals have protected and served their communities as lawmen. Today, people who help enforce the law are called police officers because both men and women can serve in the police force.
Many years ago, doctors trained nurses to help them treat people. Today, nurses go to school to learn about medicine and about how to help people when they are sick. Nurses perform many of the same duties as doctors.
The first teachers in the United States were students who did well in school and were hired to teach other students. Today, teachers must have college degrees to teach. Schools today are larger than those in the past and often have several separate classes at the same grade level.
Firefighters are community heroes and their job is to help wherever there is trouble. Firefighters must be well trained, wear protective uniforms, and ride on trucks that are equipped to fight fires. Firefighters and the equipment they use today have changed significantly over the years.
Batter up and explore the comprehensive history of America's favorite pastime - baseball! This fun book features baseball's timeline, which follows the evolution of the baseball official rules through time. Also addressed are the first African American and Women's baseball leagues. Photos will keep readers engaged and vocabulary related to the game and its history is provided.
Doctors help people stay healthy. When people get sick, doctors help them get well again. Today, doctors use many complex instruments to treat people. Long ago, doctors had few instruments and did not know as many ways to help people get well.
Much of what we know today about Earth is from images taken by cameras on powerful telescopes. Edwin Hubble changed our view of the universe. Working in an observatory, he found that there are other galaxies besides the Milky Way. He also showed that the universe is still growing. Lyman Spitzer, Jr. proposed placing telescopes in space, and in 1990, the Hubble Space Telescope was launched. It sends us amazing images of the universe.