Grade 4

What sort of things does a person do if they are trying 'to be cool'? Why do some people act this way? Can you tell about a time when you or somebody else was trying 'to be cool'? What would… Read More →

Thanks to passionate fans, blockbuster games, and celebrity players, the gaming industry takes in billions of dollars each year. Learn how professional gamers make money, which games are the… Read More →

After Jewish fifth-grader Ava and her Muslim best friend Nadeem are called hateful names at school, Ava's Granny Buena rummages in her closet and pulls out a glittering crystal button box.… Read More →

Do you know how to use a calendar? A calendar is a chart with numbers and words. It shows us the year, the months, the weeks, the days, and the dates. Can you find the date of a special day,… Read More →

Wild bears are enormous animals with huge appetites. When they are unable to find enough food in their usual habitat, they become bold enough to leave the forest. Driven by hunger, they… Read More →

Have you ever been in a car when it goes through a car wash? What did you hear and see? What was wiping and rubbing on the sides and the windows? Did you see frothy bubbles and splashing… Read More →

Wilcox and Griswold are on the case, trying to discover who poisoned the apples Porcini pigged out on. Was it Sweet Pea, the piglet next door; Herman the Rat; or Hot Dog the nosy pooch? Who… Read More →

Rumors are swirling about an abandoned mansion in town. Some students say it's haunted. Others think it's just falling apart. But when a few streamers sneak in and capture footage of statues… Read More →

A creepy, shadowy creature is haunting the abandoned amusement park! While exploring the park, a student named Yuri runs away in fear from the beast—and her dog disappears! Yuri begs the… Read More →

A summer trip to her grandparents' house was going great until Jesse gets caught up in a mystery in the attic. When she encounters a pair of spooky green eyes during a lightning storm, Jesse… Read More →

Strange fingers are growing from the ground in the forest outside of school! Some kids think it’s zombies rising from the grave, others say they’re poisonous mushrooms, but everybody’s… Read More →

When food goes missing on Ed's farm, Detectives Wilcox and Griswold do what it takes to track down the thieves. In this case, Miss Rabbit's carrot cake has disappeared. Has it been stolen? Or Read More →

Ben’s best friend Cooper is getting nasty notes from an unknown bully. On top of that, her dad is keeping his new girlfriend a secret. It’s up to Ben and his basset hound, Blue, to help… Read More →

When Penny goes missing from the nest, Wilcox and Griswold are called in to track her down. Was the egg stolen by a rival for The Most Round in the Spring Egg-stravaganza? Was she used in a… Read More →

Strange glowing aliens have been spotted near Seagull Island! A fisherman claims he saw a mysterious underwater creature near the shore. He believes it's an extraterrestrial, so he asks the… Read More →

Panamanian golden frogs aren't just cute, little, and yellow. They're also the national symbol of Panama. But they started to disappear about fifteen years ago. What's killing them? Could it… Read More →

Honeybees are a crucial part of our food chain. As they gather nectar from flowers to make sweet honey, these bees also play an important role in pollination, helping some plants produce… Read More →

Little brown bats do us a big favor. They eat huge numbers of insects! That helps limit the spread of diseases and the damage that insects do to farm crops. But in recent years, large… Read More →

Welcome to the British Museum, home to Lottie Lipton: nine-year-old investigator extraordinaire! The British Museum needs a big donation to stay open—and it has to be by tonight. For once,… Read More →

Artificial intelligence has existed for decades, and it continues to improve. But the growth of AI technology has created many challenges. AI has taken jobs from humans. When asked a… Read More →

Tao and his friends are super excited for the International Martial Arts Championship! But trouble is close behind them. When two top students from Master Snow's school disappear, Tao is on… Read More →

On January 12, 1888, a sudden blizzard barreled across Iowa, Minnesota, Nebraska, and the Dakota Territory. Blinding snow and howling wind took rural towns by surprise. Many children were… Read More →

Ever wonder where chocolate came from? We have the Mayan king Kukulkán to thank. Kukulkán is more than a king—he is also a god. One day he brings his people an amazing gift: a chocolate tree! Read More →