Whether it's a bicycle, car, or roller coaster, vehicles would not be able to function without wheels! Readers explore the importance of ...
Wedges are used in a variety of ways that may not always be easy to spot, from splitting wood to lifting heavy objects. In this volume, ...
From assembling furniture to building complex machines, screws are an essential tool for many mechanical endeavors. This volume explores ...
What do raising flags and moving heavy loads have in common? Both of them are made possible because of pulleys! In this volume, readers ...
Readers may not yet realize it, but levers can be found in many places in the world around them—from playground seesaws to construction ...
Have you ever seen a ramp used to load goods into a truck or to make a building's entrance more accessible? If so, you've seen inclined ...
Hamsters are cute, small, round, and inquisitive, but it's important to understand what these nocturnal creatures need beyond playtime and ...
Guinea pigs are adorable and lovable pets, but are they the right pet for you? This volume, which details the caretaking requirements for ...
Gerbils are active, friendly, and gentle pets that are popular with many families, but certain things must be done to keep them happy and ...
