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A rock sinks in the water. A hot air balloon floats in the air. Many objects float and sink. But what makes them move this way? And how do people use floating and sinking in their lives? Read Read More →

A fire alarm’s wail. A cat’s quiet purr Your ears let you hear all kinds of sounds, both loud and soft. But how do your ears work? And how does your sense of hearing help you? Read this book… Read More →

A green frog. An orange Popsicle. A flashing “walk” sign. Your eyes let you see everything around you. But how do your eyes work? And how does your sense of sight help you? Read this book to… Read More →

The sweet smell of roses. The rotten smell of garbage. Your nose lets you smell these scents and more. But how does your nose work? And how does your sense of smell help you? Read this book… Read More →

A furry dog. A scaly lizard. Your sense of touch lets you feel these things and more. But how does your sense of touch work? And how does it help you? Read this book to find out! Learn all… Read More →

A baseball player slides on the ground to tag a base. A toy car's wheels rub against the floor and slow the toy car down. Friction is at work all around you. But what exactly is friction? And Read More →

Leaves are changing colors. The days are getting cooler. Farmers harvest crops. It’s time to carve a pumpkin! Do you know what season is here? It’s fall! What else happens in fall? Read this… Read More →

Do you plan how much money you’ll use to buy candy? Or how much you’ll save for a new video game? Then you’re budgeting! A budget is a plan for spending and saving. Budgets help people decide Read More →

Do you know a place that’s home to both manatees and panthers? Get ready for a trip to the Everglades! Many plants and animals live in this huge wetland. But why is the Everglades region also Read More →

Have you ever seen rocks that are more than two billion years old? Get ready to visit the Grand Canyon! Millions of people travel to Arizona to visit this amazing place each year. But just… Read More →

Do you know where to find the world’s largest freshwater lake? Or which lake has more than thirty thousand islands? Get ready to explore the Great Lakes! People rely on the lakes for food,… Read More →

Have you ever seen a tree as wide as a house? What about one taller than a skyscraper? Get ready to explore the gigantic trees in the Redwood Forests! These amazing forests are located along… Read More →

Did you know that the Rocky Mountains range is more than 3,000 miles long? It stretches all the way from Canada in the north to New Mexico in the south. Some people call them the "Backbone of Read More →

Do you get an allowance? Or have you ever been paid for doing chores, such as walking a neighbor’s dog or raking leaves? If so, you’ve earned money! Everyone has to decide what they will do… Read More →

Have you ever bought a toy at a store? Have you had a haircut or ordered food in a restaurant? Then you’ve used goods and services! Goods and services are everywhere. They’re in stores,… Read More →

Have you ever received a birthday card with a $10 bill inside? Or found a quarter on the sidewalk? These bills and coins are made of paper and metal. But they’re far more valuable than what… Read More →

Have you ever put money into a bank account? Or withdrawn money to buy a video game? Then you’ve used a bank! Banks are businesses where people keep their money. Banks help us save and spend… Read More →

Look around you. Do you see bright, puffy clouds? A glass of milk? Falling snowflakes? A fancy white dress? The color white is found in nature, in clothing, at home, and in many other places. Read More →

Have you ever bought a cold drink at a lemonade stand? Or have you baked cookies for a school bake sale? If so, you’re a consumer and a producer! Consumers, producers, buyers, and sellers all Read More →

Look around you. Do you see tall sunflowers? A bunch of ripe bananas? A yellow traffic light? A puppy’s yellow fur? The color yellow is found in nature, at home, in the community, and in many Read More →

Did you know that Yellowstone National Park has more geysers and hot springs than anywhere else on Earth? The geyser called Old Faithful shoots boiling water 130 feet (40 meters) into the… Read More →

What do a penguin, a pigeon, and a peacock have in common? They’re all birds! But do you know what makes a bird a bird? Read this book to find out! Learn all about reptiles, insects, mammals, Read More →

What do an elephant, a mouse, and a dolphin have in common? They’re all mammals! But do you know what makes a mammal a mammal? Read this book to find out! Learn all about birds, insects,… Read More →