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Astronomers Through Time

Lisa E. Greathouse

Publisher: Teacher Created Materials ISBN: 9780743905626

Ancient astronomers looked at movements in the sun, moon, and stars to guide travelers and keep track of the seasons. Nicholas Copernicus was the first to challenge people's beliefs that Earth was the center of the solar system and is known as the founder of astronomy. Galileo Galilei built a telescope and spotted craters on the moon and sunspots on the sun. Isaac Newton invented the reflecting telescope and discovered the law of gravity. Astronomers continue to work every day to uncover the mysteries of the universe.

Rachel Carson: Nature's Guardian

Gina Dal Fuoco

Publisher: Teacher Created Materials ISBN: 9780743905664

Rachel Carson began writing about nature when she was just 10 years old. She became a zoologist in 1932 and went to work for the United States government as a biologist and writer. She wrote about natural resources and encouraged others to care for the planet. She wrote books that helped people understand the world around them. Everyone can play a part in keeping the Earth healthy.

Inside the World of Matter

Jane Weir

Publisher: Teacher Created Materials ISBN: 9780743905671

Everything around us is made up of matter. Understanding how matter can change properties and how the position of molecules determines the state of matter helps explain everything from energy to why certain substances have chemical reactions when mixed together.

Max Planck: Uncovering the World of Matter

Jane Weir

Publisher: Teacher Created Materials ISBN: 9780743905688

Planck studied physics, the science of matter and energy. He wound up making big discoveries in the area of thermodynamics, which is the study of heat and how it moves. Planck won the Nobel Prize for his work in Quantum Physics, which is the movement inside of atoms. It changed the way scientists understood the world.

Marie Curie: Pioneering Physicist

Elizabeth R.C. Cregan

Publisher: Teacher Created Materials ISBN: 9780743905701

Marie Curie's work in radioactivity changed the way scientists think about matter and energy and led to advancements in the treatment of disease. With her fellow scientist and husband, Pierre Curie, she searched for the source of radioactivity and discovered two elements, radium and polonium. They shared the 1903 Nobel Prize, the world's highest science award, for their discovery.

All About Energy

Don Herweck

Publisher: Teacher Created Materials ISBN: 9780743905718

Energy is all around us—humans use energy, machines use energy, and heat and power use energy. Energy is found in many forms, and there are many energy sources. People are working to develop new, renewable sources of energy for future generations.

Investigating Forces and Motion

Jane Weir

Publisher: Teacher Created Materials ISBN: 9780743905732

Forces can't be seen, but without them, nothing around us would happen! A force is a push or pull that usually causes movement. Friction is a force that opposes motion and slows things down or stops them. Famous scientist and mathematician Sir Isaac Newton wrote the rules about forces and motion.

All About Light and Sound

Connie Jankowski

Publisher: Teacher Created Materials ISBN: 9780743905794

Light and sound are two of the most important ways to understand the world around us. The sun is Earth's main source of energy and light. Light bounces off objects and travels to our eyes. Our eyes and brain work together to translate that light into what we see while our ears pick up sound vibrations and translate them into meaningful messages.

Pioneers of Light and Sound

Connie Jankowski

Publisher: Teacher Created Materials ISBN: 9780743905800

Scientists who have studied light and sound over the last few centuries invented many things that we still use today. Thomas Young, for example, proved that light moves in waves and invented prescription eyeglasses. The study of sound has led to inventions like the telephone and hearing aids. Thomas Edison studied both light and sound and invented such things as a long-lasting light bulb, the phonograph, and the first recording machine.

The World of Elements and Their Properties

Lynn Van Gorp

Publisher: Teacher Created Materials ISBN: 9780743905817

There are 90 different elements, like the oxygen that we breathe, that can be found in nature. When two or more elements combine, they are held together by a chemical bond and form a compound. In 1869, chemist Dmitri Mendeléev organized the elements into a chart that is known as the Periodic Table of Elements.

Looking Inside Cells

Kimberly Fekany Lee

Publisher: Teacher Created Materials ISBN: 9780743905831

Cells are the building blocks of life. According to Cell Theory, all living things are made of cells; cells are the basic unit of life; and all cells come from other cells. The nucleus of a cell has chromosomes made of DNA, which make each individual unique.

Cell Scientists: Discovering How Cells Work

Kimberly Fekany Lee

Publisher: Teacher Created Materials ISBN: 9780743905848

British scientist Robert Hooke built an early microscope and was the first scientist to observe cells and give them their name. Anton van Leeuwenhoek created the best microscopes of his time and used them to study living organisms. Matthias Schleiden, Theodor Schwann, and Rudolf Virchow created Cell Theory, which says that all living things are made of cells; cells are the smallest part of a living thing; and all cells come from other cells.

All About Mitosis and Meiosis

Elizabeth R.C. Cregan

Publisher: Teacher Created Materials ISBN: 9780743905855

Many organisms are multicellular, which means they have many cells—even trillions! The cells work together to help the organism do things such as create energy, reproduce, and get rid of waste.

Investigating Simple Organisms

Lisa Zamosky

Publisher: Teacher Created Materials ISBN: 9780743905879

For many centuries, scientists believed there were only two kingdoms, or groups of living things: plants and animals. But Anton van Leeuwenhoek made microscopes in the 17th century that also proved there are microorganisms, or microbes. Microbes can help keep people stay healthy, but some also can make people sick.

The World of Plants

Michael L. Macceca

Publisher: Teacher Created Materials ISBN: 9780743905893

All plants need sun, water, air, and food to grow. Plants are anchored to the ground by their roots, which take in nutrients from the soil. Stems and stalks hold up plants and give them shape, and also hold the plumbing system of the plant. Leaves are the place where food is made for the plant. Many plants make crops for us to eat.

George Washington Carver: Agriculture Pioneer

Stephanie Macceca

Publisher: Teacher Created Materials ISBN: 9780743905909

George Washington Carver was born a slave, but he became an important scientist and teacher. He experimented with soil and became famous for his work as a botanist. He used peanuts and other plants to make new products. Before Carver's research, plants were only used for food and clothing. His creative approach to agriculture taught people that plants could be used to make many products, like rubber, ink, fuel, and paper, to name a few.

Inside Ecosystems and Biomes

Debra J. Housel

Publisher: Teacher Created Materials ISBN: 9780743905916

Plants and animals that need one another in an environment form an ecosystem. All ecosystems have energy pyramids that show the exchange of energy from one food source to another. Biomes are areas of the Earth that have their own climate and characteristics. Ecosystems all over the world are in danger due to pollution, hunting, and other factors. By conserving water, recycling, and reducing pollution, we can help protect Earth's ecosystems and biomes.

Pioneering Ecologists

Debra J. Housel

Publisher: Teacher Created Materials ISBN: 9780743905923

Ecologists study the connections living things have with one another and their surroundings. John Woodward did some of the first ecology experiments in 1699 and figured out algae bloom. Aldo Leopold's work led to the Endangered Species Act to protect plants and animals from becoming extinct, and he led the U.S. government to begin considering the environmental impact of land use. Eugene Odum was the first to see Earth as a set of interlocking ecosystems. His work led to laws to protect wetlands.

The World of Animals

Joshua BishopRoby

Publisher: Teacher Created Materials ISBN: 9780743905930

What things do all animals have in common? How do scientists classify animals? How are humans classified and what makes them different? Enter the animal kingdom with zoologists who study animals! You'll explore how scientists use a system called taxonomy to classify and organize different kinds of living things as you explore the wonderful world of animals.

Jane Goodall: Animal Scientist and Friend

Connie Jankowski

Publisher: Teacher Created Materials ISBN: 9780743905947

Jane Goodall is the world's leading authority on chimpanzees. She moved to the African jungle to study them. Her visit to Kenya led to a meeting with famous paleontologist Louis Leakey. Although she wasn't a trained scientist, Goodall began working with Leakey in 1960. She earned the trust of the apes and observed their social interactions. She studied them for more than 30 years. She learned that chimps use tools and are more intelligent than was previously thought.

The World of Genetics

Lynn Van Gorp

Publisher: Teacher Created Materials ISBN: 9780743905978

To understand why humans are the way they are, look at cells—especially the material in the center, called chromosomes. People have 23 pairs of chromosomes, so each cell has 46 in all. Parents pass chromosomes to their children. DNA carries the genetic information in alleles and is the blueprint for the cells of an organism. DNA tells one's body how to put certain materials together to produce certain traits.