Psychology
How some friendships last — and others don’t
Lesson duration 04:59
Friendships can change how we see and move through the world. They can boost our academic...
Want a daily email of lesson plans that span all subjects and age groups?
Learn more
Science & Technology
Why animals help each other
Lesson duration 04:19
Charles Darwin introduced the notion of “survival of the fittest,” where the fittest animals are...
Social Studies
The woman who broke the Great Wall of China
Lesson duration 05:00
Long ago, an emperor decided to build a great wall to protect his new empire and ensure his...
Psychology
How to manage your stress more effectively
Lesson duration 05:29
An upcoming project deadline, a fight with a family member, or even an embarrassing moment can...
Design, Engineering & Technology
How scientists are creating real-life invisibility cloaks
Lesson duration 05:35
A spy presses a button on their suit and blinks out of sight. A wizard wraps himself in a cloak...
Science & Technology
The world’s longest-burning fires
Lesson duration 04:29
In 1997, a fire began in Indonesia that would rage for almost a year. Despite being one of the...
Design, Engineering & Technology
Why don’t companies want you to repair your stuff?
Lesson duration 06:05
Today, some companies are working hard to prevent consumers from repairing products on their own....
Health
What staying up all night does to your brain
Lesson duration 05:37
You’re just one history final away from a relaxing spring break. But you still have so much to...
Mathematics
Can you solve the trickster god riddle?
Lesson duration 06:01
Ragnarok has been raging for far too long; many gods and heroes have fallen, and the rest can...
Thinking & Learning
Is safety worth the loss of privacy?
Lesson duration 05:30
Your government has introduced a plan to address record-breaking rates of traffic tickets and...
Social Studies
Ugly History: The Armenian Genocide
Lesson duration 07:40
When an Armenian resistance movement began to form in the 19th century, Sultan Abdul Hamid II...
Social Studies
Democracy is being tested. Citizen assemblies can help - Ketakandriana Rafitoson
Lesson duration 14:24
How can everyday people help foster and protect democracy? Detailing her work fighting for people...
Health
How do kidney transplants work?
Lesson duration 05:18
In 1954, Joseph Murray attempted a type of kidney swap that no doctor had tried before. The...
Health
The real reason polio is so dangerous
Lesson duration 06:35
In 1952, polio was everywhere: killing or paralyzing roughly half a million people annually. Yet...
Social Studies
How to be fearless in the face of authoritarianism - Sviatlana Tsikhanouskaya
Lesson duration 05:45
How do you stand up to authoritarianism? In this powerful talk, housewife-turned-politician...
Literature & Language
The curse of the monkey's paw
Lesson duration 06:35
Sergeant-Major Morris regaled his friends with epic tales from faraway lands— until one asked...
Science & Technology
How do heat waves affect your body?
Lesson duration 06:06
In many parts of the world heat waves are happening more often with greater intensity and for...
Health
3 reasons why medications are so expensive in the US
Lesson duration 05:20
A century after its discovery, insulin remain essential in treating diabetes, and has a...
Thinking & Learning
The dungeon master's riddle
Lesson duration 05:18
Yet another party of adventurers has broken into your lair to slay your minions and steal your...
Health
What are those colors you see when you rub your eyes?
Lesson duration 05:22
In the 1600s, Isaac Newton conducted a series of experiments to better understand the lights and...
Social Studies
The real tale of the Monkey King in Heaven
Lesson duration 05:25
While his disciples loved their roguish leader, Sun Wukong’s misadventures had spread chaos...
Science & Technology
This mushroom will kill you before you know what’s happening
Lesson duration 05:37
Humans have known about the toxicity of death cap mushrooms for millennia. Yet they continue to...
Social Studies
Greek mythology’s greatest warrior
Lesson duration 05:41
Born to a sea nymph and a king, and trained by the legendary centaur Chiron, Achilles was a...
Science & Technology
Are there any places on Earth with no bugs?
Lesson duration 05:01
Insects are the world’s most numerous and diverse animals. Even where you’d least expect...