Instructional Video4:58
Curated Video

Understanding Fractions: Identifying Numerators and Denominators

K - 5th
In this video lesson, students learn how to identify the parts of a whole to find a fraction. The teacher explains the concept of numerator and denominator, and demonstrates how to count and draw pictures to determine the fraction.
Instructional Video4:11
Curated Video

Understanding Fractions: Equal Parts

K - 5th
This video lesson explains the concept of fractions by using visual models. It emphasizes that fractions represent equal parts of a whole, whether it's a shape, a set, or a number line. The video also highlights the importance of having...
Instructional Video4:51
Flipping Physics

Kepler's Second Law Derivation

12th - Higher Ed
Kepler’s second law is derived and demonstrated. This is an AP Physics C: Mechanics topic.
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Conte
nt Times:
0:00 Keple
r’s Second Law
0:18 Angular Mo
mentum Conservation
1:27
Planet Angular Momentum
2:21...
Instructional Video2:42
Curated Video

Breaking Shapes into Equal Parts

K - 12th
Partition shapes into equal areas and express each part as a unit fraction.
Instructional Video
University of Oregon

Electronic Universe: Kepler's Laws of Planetary Motion

9th - 10th
From the The Electronic Universe Project web site. This page states and explains Kepler's three laws of planetary motion. Includes some downloadable movie clips and associated sound files. Discusses Ptolemy's attempt to explain...