Some butterfly eggs are orange. Some are green and yellow. Some butterflies lay white eggs. Some eggs are smooth. Others have bumps or ridges. Some are round. Learn More

What happens to ice cream on a hot day? It melts. Many solids melt. Butter melts. Butter melts if you leav it out in the hot summer sun. It melts if you put it in a hot oven.

Size matters. Size is important. Getting the size right helps you pick clothes that fit. Is size important in other ways?

What do you need to stay alive? You need food. You need water. You need air. All organisms need food, water, and air. An organism is a living thing. You are an organism. Animals are also organisms. Learn More

Soil is one of the most important things on our planet. It is important for plants. It is important for animals. And it is important for you. But what is soil? Soil is a mix of clay, bits of rock, and humus.

Water does not have a set shape. Its shape changes. Water is a liquid. Liquids are matter with no set shape. Can you name other liquids?

What a beautiful day. The sun is shining. There are all kinds of weather. Many people like sunny days best. What do you like about sunny days?

Why does a yo-yo spin down? Why does a ball roll down a hill, not up? Why does rain fall down, not up? The answer to all these questions is the same. Gravity. Gravity is a force that pulls things. Earth's gravity pulls things toward Earth. That means, down. Learn More

No matter where in the world you live, animals are close by. Maybe some ants are scurrying across the ground. Maybe a bird is singing in a tree. Maybe a dog is barking. Perhaps a bison is roaming on the plains nearby. Learn More

Backyards come in all sizes and shapes. Most backyards have a grassy part called a lawn. Many have trees. Some have vegetable or flower gardens. Most backyards have lots of animals. Animals find homes, food, and safety in the yard. Learn More

All deserts get very little rain. But not all deserts are alike. Some deserts are burning hot during the day and ice cold at night. Others have snow in the winter. Camels are found in some deserts. Learn More

IT’S GREEN! IT’S ALIVE! A forest is full of trees – and much, much more. Forests also have bushes and wildflowers. Vines climb up some trees. Moss grows on logs on the forest floor and on trees. Animals live in forests. Learn More

LOOK UP! What goes up must come down. Right? Not when it comes to mountains. Most of the world's mountains have stood for millions of years. Many mountains are thousands of feet tall.Some are over five miles high!

Go up in a spaceship. Look at Earth. It is mostly blue. That's because almost three-fourths of Earth is covered by water. Some of the water is freshwater. It is found in rivers, lakes, and ponds. Learn More

Are you wearing a T-shirt? Have you eaten some grapes today? Do you write with a pencil? If so, thank a plant. T-shirts are made from cotton. Cotton is a plant. Grapes grow on a vine. Vines are plants. Learn More

You can find ponds in city parks and on farms. Ponds are in the woods and in some backyards. What is a pond? It is bigger than a puddle. It is smaller than a lake and not as deep. A pond may seem quiet and peaceful. Learn More

BLAST OFF! Outer space is closer than you think. It’s about a hundred miles straight up. If you could drive, the whole trip would take around an hour and a half. Of course, you can’t drive. You have to fly. Learn More

Weather plays a big part in our lives. It affects the things we do. It affects the clothes we wear. It can even affect our mood. But what causes one day to be hot and sunny and another to be wet and cold? Learn More