The 20th century saw many new inventions. Changes came fast and made life easier. Cars, planes, TVs, and cell phones were all invented in the 1900s. What other important things were invented during this time? From electricity to emoji, this Spanish nonfiction book will keep students engaged in reading as they build their literacy, vocabulary, and comprehension skills. Important text features include a glossary, index, and table of contents. The Reader's...

Playing Tug-of-War, pedaling a bike, jumping rope - these actions all require force! We typically don't notice most of the forces around us, but they surround us all the time. Find out how force works, and then harness your knowledge to design and build like an engineer! Third-grade students will enjoy learning about inertia, tension and gravity, lift and air resistance, electric and magnetic forces, combined forces, and more through this high-interest...

Dynamite is highly explosive. This is because it's a chemical reaction waiting to happen. Chemical reactions happens all the time - even inside us! Reactants change to make new products. Explore physical and chemical properties of the substances that surround us in this explosive physical science book. From decomposition to acid-base reactions, fifth-grade readers will learn about six types of chemical reactions; activation energy and hopping electrons;...

Playing Tug-of-War, pedaling a bike, jumping rope - these actions all require force! We typically don't notice most of the forces around us, but they surround us all the time. Find out how force works, and then harness your knowledge to design and build like an engineer! Third-grade students will enjoy learning about inertia, tension and gravity, lift and air resistance, electric and magnetic forces, combined forces, and more through this high-interest...

Sound waves are all around us creating a multitude of different frequencies. Some we can hear, and some we cannot hear. Discover the ways in which animals, insects, and birds communicate through sound as well as how sound is beneficial for other uses -- even if we can't hear it! High-interest, informational text paired with vibrant images and photos, intriguing facts, and a helpful glossary and index will keep readers engaged from cover to cover....

During the 20th century, many things were invented that made people's lives easier. Vacuum cleaners and washing machines made doing chores easier. Vaccines and penicillin improved public health. Radio and telephones helped communication, and airplanes and automobiles transformed transportation. Featuring TIME For Kids content, this nonfiction reader details the history of 20th century inventions, and discusses their importance to the modern world....

Dynamite is highly explosive. This is because it's a chemical reaction waiting to happen. Chemical reactions happens all the time - even inside us! Reactants change to make new products. Explore physical and chemical properties of the substances that surround us in this explosive physical science book. From decomposition to acid-base reactions, fifth-grade readers will learn about six types of chemical reactions; activation energy and hopping electrons;...

This high-interest nonfiction reader will help students gain science content knowledge while building their literacy skills and reading comprehension. This appropriately leveled text features hands-on, simple science experiments and full-color images and graphics. Fourth grade students will learn all about light and its various uses through this engaging text that supports STEM education and is aligned to the Next Generation Science Standards.