Lightning in the Sky: Advanced English Class
Is lightning a line of electricity that shoots through the sky? Not really. Learn how lightning works in this Level 5 listening lesson.
Free online English lessons
Is lightning a line of electricity that shoots through the sky? Not really. Learn how lightning works in this Level 5 listening lesson.
Around the world, 57 ballpoint pens are purchased every second. How did this simple pen become so popular? Get the answer in this Level 5 listening lesson.
The printing press changed the way we learn and think. Here’s 1,500 years of printing history in one short Level 4 listening lesson.
Marie Curie was a great scientist who won two Noble prizes. Learn more about her amazing life in this Level 4 listening lesson.
Galileo was a scientist who wanted to understand the world with evidence and proof. Learn about his work and ideas in this Level 5 listening lesson.