How Do We Measure Absolute Time?-Geologic Clocks
In this absolute time worksheet, students define radiometric dating, tree rings and varves as means to measure absolute time. They are given information about each of these methods of dating.
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Relationships Between Formal Measurement Units: Measure and Record Mass in Kilograms and Grams
Teach the masses about the metric system with this hands-on measurement lesson. Given a fruit or vegetable, learners estimate, measure, and convert its mass using the metric units gram and kilogram.
3rd - 8th Math CCSS: Adaptable
How Will We Create a Future without Waste?
Students act globally by reducing, reusing, and recycling, but now they take it to the next level by upcycling. Middle school students design a proposal to eliminate waste by exploring the new material cycle and applying their knowledge...
6th - 8th Science CCSS: Designed
How We Know About the Earth's Core
The big question is, how do we know about the composition of the earth's core? Sal explains that at 105 degrees from the source point of an earthquake the phenomena of p wave shadow zone leads us to conclude that the waves are traveling...
6 mins 8th - 11th Science
How Does Your Smartphone Know Your Location?
When your smartphone tells you the weather of your current location or gives you directions to the nearest gas station, there's more going on that you might realize. Follow along with this short video as it explains how satellites,...
5 mins 9th - Higher Ed Science CCSS: Adaptable
How Do Germs Spread (and Why Do They Make Us Sick)?
Much the chagrin of mothers around the world, germs are everywhere; it's unavoidable. Learn how these microscopic invaders have evolved different ways of spreading from one host to another with this short instructional video.
5 mins 7th - 12th Science CCSS: Adaptable