from the back cover: Oxford Bookworms enjoy a world-wide reputation for high-quality storytelling and a great reading experience. Research shows reading a lot improves all your language skills. Experts recognize Oxford Bookworms as the most consistent series in terms of language control, length, and quality of story - very important for fluent reading and extensive reading. There's a …
This series explores the world of machines and takes a detailed look at how they operate. Highly technical and realistic artwork is presented with cutaways and exploded views to help children understand how various components work.
In cartoon format, uses aliens to explain the science of energy--Provided by publisher.
Look around to see what uses oil—cars, airplanes, boats, factories, and countless other machines. The world is dependent on oil as its main source of energy. Although oil is plentiful right now, the supply will eventually run out, and even worse, burning oil is very damaging to the environment. What alternatives can help us use less oil and how can we protect the environment? Read and find out!