855,226 views
Want a daily email of lesson plans that span all subjects and age groups?
Learn more
2,273,636 views
1,215,085 views
Science & Technology
Schrödinger's cat: A thought experiment in quantum mechanics
lesson duration 04:38
7,252,313 views
4,517,873 views
Science & Technology
Light seconds, light years, light centuries: How to measure extreme distances
lesson duration 05:29
3,248,243 views
713,198 views
5,566,135 views
1,442,499 views
4,954,875 views
634,986 views
Literature & Language
Who speaks Wukchumni? A vanishing Native American language
lesson duration 09:28
67,204 views
Science & Technology
Cloudy climate change: How clouds affect Earth's temperature
lesson duration 06:40
184,172 views
174,822 views
797,622 views
2,180,059 views
4,585,614 views
Science & Technology
Particles and waves: The central mystery of quantum mechanics
lesson duration 04:52
983,601 views
406,512 views
3,889,256 views
6,504,849 views
2,714,146 views
14,264,353 views
1,738,337 views