Have a Yabba-Dabba-Doo day with Fred Flintstone as he explains how a lever works! Fred shows readers the Flintstone way of using simple machines in everyday situations. With simple, informative text narrated by Fred and a few other Flintstone characters paired with colourful illustrations, students wil learn all about simple machines and basic physics concepts!

Learn about how an inclined plane works! Beginner readers and budding young scientists will love learning about using simple machines in everyday situations. Along the way, readers will be supported by expertly leveled text, a strong text-photo match and appropriate text load. Readers will be excited to dig in and learn all about simple machines and basic physics concepts.

Learn about how a pulley works! Beginner readers and budding young scientists will love learning about using simple machines in everyday situations. Along the way, readers will be supported by expertly leveled text, a strong text-photo match and appropriate text load. Readers will be excited to dig in and learn all about simple machines and basic physics concepts.

An engrossing examination of the science behind the little-known world of sleep. Like many of us, journalist David K. Randall never gave sleep much thought. That is, until he began sleepwalking. One midnight crash into a hallway wall sent him on an investigation into the strange science of sleep. In Dreamland, Randall explores the research that is investigating those dark hours that make up nearly a third of our lives. Taking readers from military battlefields to children’s bedrooms, Dreamland shows that sleep isn't as simple as it seems. Why did the results of one sleep study change the bookmakers’ odds for certain Monday Night Football games? Do women sleep differently than men? And if you happen to kill someone while you are sleepwalking, does that count as murder? This book is a tour of the often odd, sometimes disturbing, and always fascinating things that go on in the peculiar world of sleep. You’ll never look at your pillow the same way again.

Building on A People’s History of the United States, this radical world history captures the broad sweep of human history from the perspective of struggling classes. An “indispensable volume” on class and capitalism throughout the ages—for readers reckoning with the history they were taught and history as it truly was (Howard Zinn) From the earliest human societies to the Holy Roman Empire, from the Middle Ages to the Enlightenment, from the Industrial Revolution to the end of the twentieth century, Chris Harman provides a brilliant and comprehensive history of the human race. Eschewing the standard accounts of “Great Men,” of dates and kings, Harman offers a groundbreaking counter-history, a breathtaking sweep across the centuries in the tradition of “history from below.” In a fiery narrative, he shows how ordinary men and women were involved in creating and changing society and how conflict between classes was often at the core of these developments. While many scholars see the victory of capitalism as now safely secured, Harman explains the rise and fall of societies and civilizations throughout the ages and demonstrates that history moves ever onward in every age. A vital corrective to traditional history, A People's History of the World is essential reading for anyone interested in how society has changed and developed and the possibilities for further radical progress.