Grades 2 - 5

Scientists categorize rocks into three different groups depending on how the rock was formed. Humans have used rocks from all groups as tools and in construction for thousands of years.… More →

Secret passageways, stairways to the ceiling, and doors that open to walls. The Winchester Mystery House is full of tricks and traps. The heiress of the Winchester Rifle fortune built the… More →

Though he first got his start as a look-a-like for another wrestler, Zack Ryder’s personality has set him apart from the rest. Nicknamed the Long Island Iced-Z, he gets a leg up on his… More →

Nicaragua is the largest country in Central America. Covered in thick forests, this tropical country was a part of the Spanish Empire for around 300 years. Become introduced to Nicaraguans… More →

Minerals are everywhere and are essential to living organisms. There are thousands of recognized minerals in existence! Discover the properties of quartz, sulfur, and other minerals and learn More →

Did you hear something? Though western diamondbacks are known for shaking their rattles, these snakes are actually silent hunters. Their tails only move to tell predators to stay away. It is… More →

Smashing serves on clay, grass, and hard courts, professional tennis players keep the ball in line no matter the playing surface. Serving up a ton of fun, this title follows the world’s best… More →

For over 20 years, Undertaker has been an almost unstoppable force in WWE. He has collected a record 21 WrestleMania wins, and that's just one accomplishment! When Undertaker eventually makes More →

Edinburgh Castle’s 900-year-old history is riddled with murders and executions. Today visitors from all over the world tour the fortress. It’s no surprise that reports of eerie shadows, drops More →

The M-ATV is a mine-resistant all-terrain vehicle. It was developed for use by United States troops in Afghanistan, where roadside bombs are a major threat. The special armor of an M-ATV… More →

The F-15’s primary mission is air supremacy. A head-up display in the cockpit keeps the pilot attuned to all airspace action, and high maneuverability allows for tight turns at high speeds.… More →

The Eastern State Penitentiary was the first prison to use solitary confinement. This controversial form of punishment is said to have left many inmates mentally ill. A few were driven to… More →