Explains how society progressed from the barter system to currency, and how that money works in the global economy.

"Quantum mechanics is humanity's finest scientific achievement. It explains why the sun shines and how your eyes can see. It's the theory behind the LEDs in your phone and the nuclear hearts of space probes. Every physicist agrees quantum physics is spectacularly successful. But ask them what quantum physics means, and the result will be a brawl. At stake is the nature of the Universe itself. What does it mean for something to be real? What is the...

"Children love challenges, especially ones that involve hands-on experimentation and friendly competition. Can they build a bridge using only pasta and glue, one that a toy car can drive both under and over, and is sturdy enough to carry a considerable weight? Can they construct a "roller coaster" from recycled cardboard tubes in which the marble "car" jumps a track to land safely at its final destination? And can they create a device to safely catch...

"For most of our lives, we are encouraged to trudge along the well-worn paths of those who have come before us. We learn the rules - in our families, in our schools, in our workplaces, in our churches - and most of the messages we receive tell us that following the rules will allow us to arrive at the lives we desire. But when change becomes not only desirable but also urgently necessary, this way of being no longer serves us. Bishop T.D. Jakes illuminates...

Engaging images accompany information about gemstones.

"Why do people build with arches? Why do we use stone in some places and wood in others? What's a foundation? How do you plan a road or construct a bridge? The answers to these questions can help gamers in Minecraft and in the real world! Through building their own structures and systems in Minecraft, young readers and gaming fans will learn about the past and present of human engineering, with a vision toward the future"--Provided by the publisher....

"Some people have diabetes, which causes their bodies to have trouble making or using insulin. How can people with diabetes get the insulin they need? Readers find the answer with this relatable and engaging look at life with diabetes. They will discover how visiting the doctor is important when your body is not functioning properly. Charming illustrations and colorful characters enhance the reading experience and present information in a relatable...

"How do we heal our grief and loss to become the leaders the world needs today? In this unique collection love letters to her fellow activists and faith leaders, Jennifer Bailey offers comfort, wisdom, encouragement, support, and hope for young activists and emerging faith leaders aspiring to build a better world amidst its violence, trauma, and loss--and who may wonder if they're up to the task or unsure if they'll ever see the change they seek....

"As a canoe moves through a lake, its bow parts the water. The canoeists pull their paddles in rhythm. Canoeing is a great way to explore the outdoors! Young readers will learn all about canoeing including what it is, how to get started, and how to stay safe in this title. Vibrant photos pull readers into the pages while leveled text presents information about canoeing. Features highlight a favorite canoeing spot, canoeing strokes, and gear"--Provided...

"People all around the world use bikes! Bikers pedal to get to where they need to go. Some head to skate parks to do tricks or compete in challenging races. In this title, growing readers will learn what biking is, the basic parts of a bike, what gear is needed, and how to stay safe. One feature highlights a favorite biking spot while others break down gear and hand signals. Colorful photos and bolded glossary terms aid in comprehension"--Provided...