Grade 4

Trying to breeze through weather and climate facts just might cause a brain freeze! You're showered with details about extreme temperatures (Earth's record high is 134°F and record low is… Read More →

How often do people say, 'It depends on the weather?' Alternative arrangements must be made if conditions are unsuitable for planned activities. Cancellation, postponement or change of venue… Read More →

Math is everywhere when it comes to the weather! See what's brewing inside this book—and how we need math to finish the forecast! You'll need your math smarts to measure the temperature,… Read More →

Zero in on the lives of some of the world's most unusual sharks, including the gruesome goblin shark and the funny-faced wobbegong. You'll discover... which shark has a cookie cutter… Read More →

What do pangolins and peacock spiders have in common? They are weird! But weird can mean many different things. Pangolins are mammals, but sometimes people think they are reptiles because of… Read More →

Sniffing armpits. Scuba diving for golf balls. Building secret passageways. For some lucky people, these strange tasks are all in a day's work. Want to learn about the men and women who… Read More →

There are many weird places around the world. But weird can mean many different things! In Australia, the water of a certain lake is always pink. The US is home to an ice cream graveyard and… Read More →

Have you ever seen grass growing underwater? What about a group of succulents that look like stones? Whether deep underwater or far out in the desert, weird plants grow all over the world.… Read More →

Space keeps expanding, and so does the weirdness that fills it. There are many ways space can be considered weird! On Venus, it rains acid. Uranus spins on its side. Astronauts can grow… Read More →

What makes a sport weird? Sports might seem weird because they combine many sports into one game. Maybe people compete underwater or in other unusual places. Or a sport might take familiar… Read More →

All around the world, weird weather events occur every day. But weird can mean many different things! Sometimes more than one weather event combines in unexpected ways to form events such as… Read More →

Have you ever changed to a new school? Do you know somebody like Sanjay, who comes from a country far away? How would you feel if you went to a new school in a new country? What would be… Read More →

All of the grownups in Tib's prehistoric tribe know that the dinosaurs disappeared ages ago. So of course they don't believe that Tib has made friends with one. But Tumtum the dinosaur is… Read More →

Henry Ford loved mechanical things: springs and gears, cogs and wheels, and things that clicked and ticked and turned. One hot summer day in 1876, Henry and his father were riding to Detroit… Read More →

Many kinds of living things need soil. Different creatures live in soil. Soil contains nutrients that plants use to grow. And when living things die, they become part of the soil. It is a… Read More →

Henry Ford invented the automobile. The first video game was created in a science research lab. A melted candy bar inspired the invention of microwave ovens. You may have heard these beliefs… Read More →

Adding salt to water makes it boil faster. Eating turkey makes you sleepy. Organic food is best for the environment. You may have heard these common sayings and beliefs before. But are they… Read More →

Does the universe circle around Earth? Do creatures live on the sun? Can you tell the future by looking at the stars? At one time, science supported wild notions like these! But later studies Read More →

If you're under 18, you might be thinking, "Why do voting rights matter to me? I'm too young to vote." Voting is how our country chooses government leaders to make important decisions that… Read More →

Sometimes whales get confused and end up getting stuck on the beach. That's when people need to quickly help to get them back out to the safety of the deep water. What can people do to help… Read More →

The gray whales migrate further than any other mammals. They are always on the move. It's an endless journey to eat, breed and to move with the seasons. Where do you think the gray whales are Read More →

Sometimes whales seem to forget that they need to stay in deep water. Whales are much too big to swim in shallow water. If they come too close to the beach, they get stuck. Kind people try to Read More →

Learn all about the amazing world of whales, and follow their lives from calf to adult. Read More →