Presents information about water, its three states of solid, liquid, or gas, the dependence of the water cycle on gravity and the sun's energy, and the different forms that water takes around the worl
Presents general information about the continent of Africa, looking at its countries, cities, landforms, climate, natural resources, people, cultures, and economics.
Presents general information about the continent of North America, looking at its countries, cities, landforms, climate, natural resources, people, cultures, and economics.
Presents general information about the continent of South America, looking at its countries, cities, landforms, climate, natural resources, people, cultures, and economics.
Presents general information about the continent of Asia, looking at its countries, cities, landforms, climate, natural resources, people, cultures, and economics.
A guide on how to save and spend money in accordance with responsible budgeting shares comprehensive text, informative photos and real-life examples that counsel children about making appropriate mone
Soil can be found almost everywhere on Earth. Sand is a soft soil that is found in deserts. Loam is soil that is great for growing plants. But how are these types of soils different? And how are they
Rocks can be made of many different minerals. By looking at rocks closely, we can tell where they were formed and what conditions they were created in. How do we know these things? And how do we tell
Minerals are fascinating resources that have a variety of uses. A diamond is a mineral that is sought after for its beauty. Salt is a useful mineral that adds flavor. But do you know what minerals are
Fossils give us a window to the past. Water, sediments, and pressure work together over time to preserve the shape of things that lived long ago. Studying these ancient plants and animals tells us mor
Earth is changing every day. Erosion makes giant mountains smaller and rivers wider, but it happens so slowly most people don't even notice. Do you know what erosion is? Or what causes it? Explore the
The outside layer of our planet is an active place. Earth's crust is always growing and changing. But do you know how Earth's crust forms? And what happens when its plates shift suddenly? Find out mor
An introduction to the system of checks and balances as codified in the U.S. Constitution explains what it is and how it serves to help the government run more smoothly while giving each branch specif
