Welcome to our complete high school mathematics tutorial series! Whether you’re a student preparing for exams, a teacher seeking additional resources, or a parent helping your child succeed in math, these videos cover a wide range of...

Discover the amazing cultures and histories of the Native American peoples of North America. For thousands of years, different nations and tribes lived across forests, plains, deserts, and coasts, each with their own unique traditions,...

Learn about Silicon Valley, the place where many of our favorite tech gadgets and apps were invented! We’ll talk about how it all started, the awesome companies that grew there, and the big ideas that make it so cool. You’ll also hear...

Explore the fascinating world of the Indus River Valley Civilization—one of the earliest and most advanced ancient civilizations in human history. In this easy-to-understand video, you'll learn about the cities of Mohenjo-Daro and...

Travel back in time to discover the history of Cancun, Mexico! Long before it became a popular beach destination, this area was home to the ancient Maya civilization. In this episode, we’ll learn about the Maya people, their amazing...

Get Prepared for PSLE!

A species is a group of closely related organisms capable of interbreeding and producing fertile offspring, and speciation is the evolutionary process by which new species arise. Speciation can occur through anagenesis (gradual...

In this video, Mrs. C explains how to determine whether two variables, x and y, form a proportional relationship using tables and graphs. 🔹 *What You’ll Learn:* ✅ How to plot ordered pairs from a table ✅ How to check if a graph shows a...

Dr. Janet E. Helms, Professor Emeritus of Counseling Psychology at Boston College, is a leading figure in the study of race and racism. As an "evolving racial justice psychologist," her work focuses on demystifying the fictitious racial...

We just learned about hydrogenation of alkenes via homogeneous catalysis, and the complicated catalytic cycles that are involved. But there is an additional aspect that we need to discuss. Whenever possible, we want to be able to employ...

Before archeologists can excavate a site, they need to know where to dig. Surveys are the techniques used to find these places. What are the techniques used in archeological survey, as well as the technologies? What is LiDAR and how is...

The origin of Homo sapiens is in Africa. But at some point we began to leave and settle in other parts of the world. When did this happen, and why? What are the remains we have found that document this incredible journey? Let's take a look!

This video contains four challenging maths puzzles with answers and explanations of how we came to that answer. These maths puzzles are great for brain training and for lesson starters. Pause the video while you work each one out.

This video contains four challenging maths puzzles with quick answers. These maths puzzles are great for brain training and for lesson starters. Pause the video while you work each one out.

Learn how to calculate the buoyant force acting on a steel sphere submerged in water! This demonstration covers the physics behind buoyant force, free body diagrams, and Newton’s Third Law. We'll use measurements and calculations to show...

The eruption of Mount Pinatubo in the Philippines on June 15, 1991, was the second largest of the 20th century, sending ash 28 miles into the sky and spreading debris for hundreds of miles. Thanks to early warnings from scientists, over...

Mount Vesuvius is most famous for its eruption in 79 A.D., which buried the city of Pompeii in volcanic ash, preserving it for centuries. It's a powerful volcano in Italy that is still active and being closely watched by scientists....

The Tonga eruption in January 2022 was the most powerful volcanic explosion of the 21st century so far, sending ash 36 miles into the sky and creating tsunamis up to 65 feet high. The eruption was so strong that it caused a sonic boom...

Explore the capabilities of cutting-edge telescopes that allow scientists to peer into the depths of space and time.

The area of a triangle is always calculated using the formula 1/2 × base × height, regardless of whether it is a right, scalene, isosceles, or equilateral triangle. Perimeter and area have practical applications, such as determining the...

To determine the area of a triangle, you use the formula: Area = 1/2 × Base × Height. This formula works because a triangle is essentially half of a rectangle or square. By identifying the base (the bottom side) and the height (the...

The Tri-State tornado of 1925 is believed to be the single longest-lasting and longest track tornado, producing the largest loss of life in the United States. It is also one of the fastest-moving tornadoes recorded. With more than 2,000...

Explore the fascinating physics behind Bernoulli’s Principle, which describes how fluid pressure changes with speed and height. In this video, we derive Bernoulli’s Equation step-by-step, breaking it down into simple, understandable...

Learn how the speed of an ideal fluid changes when it flows through a pipe with varying cross-sectional areas. In this fun and engaging video, we apply the continuity equation for volumetric flow rate and solve a problem step-by-step....