855,149 views
Want a daily email of lesson plans that span all subjects and age groups?
Learn more
2,273,371 views
1,214,914 views
Science & Technology
Schrödinger's cat: A thought experiment in quantum mechanics
lesson duration 04:38
7,249,726 views
4,516,981 views
Science & Technology
Light seconds, light years, light centuries: How to measure extreme distances
lesson duration 05:29
3,248,167 views
712,999 views
5,564,762 views
1,442,397 views
4,954,042 views
634,946 views
Literature & Language
Who speaks Wukchumni? A vanishing Native American language
lesson duration 09:28
67,178 views
Science & Technology
Cloudy climate change: How clouds affect Earth's temperature
lesson duration 06:40
184,151 views
174,796 views
797,325 views
2,179,790 views
4,585,043 views
Science & Technology
Particles and waves: The central mystery of quantum mechanics
lesson duration 04:52
983,472 views
406,429 views
3,889,102 views
6,504,677 views
2,713,443 views
14,263,710 views
1,738,325 views