4th Grade

You eat food every day. In fact, every living organism can't live without it. Digestion is a complex, sometimes gross, process by which our bodies turn a meal into energy. From humans to birds and herbivores to...

DNA is known as the blueprint for life! Found in every cell of every living thing, DNA strands are packed inside a cell's nucleus carrying instructions and genetic information. Climb the double helix ladder and crack...

Many cycles occur on Earth that keep Earth's different systems connected. Introduce students to the various elements that help create Earth's many cycles. Create an interest in this topic and keep students engaged...

While only 12 people have actually had contact with it, many songs and movies have featured this shining object. But it's not a superstar, or even a star at all. It's our moon. From tides and tracking time to...

Ever wonder what life would be like without electricity? Become electrified with the amazing facts about how electricity was discovered and how it has evolved over time. High-interest text and vibrant images and...

If you've worn headphones, watched TV, worked on a computer, or ridden in a car, then you have experienced the power of electromagnetism. Learn all about electricity, magnetism, the link between these forces:...

There are many types of energy. From potential energy to kinetic energy, electrical energy to mechanical energy, energy is constantly changing from one form to another. Learn how energy powers our world in this exciting...

People experience extreme weather all over the world every day. From blizzards that pack cities with snow to thunderstorms that create terrifying tornadoes, this wild weather can be very dangerous and people must learn...

What are food webs and how do they affect our environment? Discover the ways in which energy is transferred through interdependent living things in this engaging e-book!Students will enjoy learning about producers,...

While Earth is constantly changing, evidence shows that humans are speeding up the process of the greenhouse effect. Extreme weather, plant and animal extinction, and reshaping of our coastlines are harmful effects of...

What goes up must come down! How often have you heard this saying? This typically refers to the effects that gravity has on objects. Without gravity our lives and surroundings would be very strange! Let this physical...

Earth is a unique place to live. Being just the right size and distance from the sun to maintain life is remarkable! Life depends on non-life in order to live. Explore the interdependence of living and nonliving...