This 13-minute video lesson looks at 2010 IIT JEE Paper 1 Problem 46 Circle Hyperbola Intersection.
This 9-minute video lesson is about identifying conics.
This 6-minute video lesson looks at non-linear systems of equations.
This 7-minute video lesson concludes the look at non-linear systems of equations.
This art history video discussion examines John Constable"s "The Hay Wain", 1821. Oil on canvas, 51 1/4" x 73" (130.2 x 185.4 cm) (The National Gallery, London).
This lesson shows how to write a fraction as a decimal number.
Understanding alternate coordinate systems. Created by Sal Khan.
This art history video discussion examines the "Coronation Mantle" likely made for the Norman ruler Roger II in 1133/34 in the royal workshop in Palermo of fabric from Byzantium or Thebes, Samite, silk, gold, pearls, filigree, sapphires, garnets, glass, and cloisonne enamel.
This art history video discussion examines Correggio's "Jupiter and Io" 1532-33, oil on canvas 163.5 x 70.5 cm (Kunsthistorisches Museum, Vienna).
Understanding why correlation does not imply causality (even though many in the press and some researchers often imply otherwise).
This 9-minute video lesson considers various theories about the size of the universe. [Cosmology and Astronomy playlist: Lesson 19 of 85]
This 7-minute video lesson looks at apsidal precession (Perihelion Precession) and Milankovitch Cycles. [Cosmology and Astronomy playlist: Lesson 75 of 85]
This 7-minute video lesson addresses the question: Are southern hemisphere seasons more severe because of the eccentricity in Earth's orbit? [Cosmology and Astronomy playlist: Lesson 72 of 85]
This 11-minute video lesson looks at the process of a star becoming a red giant. [Cosmology and Astronomy playlist: Lesson 17 of 85]
This 10-minute video lesson looks at the beginnings of life on Earth. Life and photosynthesis start to thrive in the Archean Eon. [Cosmology and Astronomy playlist: Lesson 39 of 85]
This 10-minute video lesson contiues to discuss the beginnings of life on Earth. The ozone layer and eukaryotes show up in the proterozoic eon. It includes the great oxygenation event (oxygen catastrophe). [Cosmology and Astronomy playlist: Lesson 40 of 85]
This 10-minute video lesson continues to discuss the beginnings of life on Earth. It looks at the Cambrian explosion and biodiversity in the Phanerozoic Eon. [Cosmology and Astronomy playlist: Lesson 41 of 85]
This 6-minute clarifies the first living things to colonize land. [Cosmology and Astronomy playlist: Lesson 42 of 85]
This 11-minute video lesson introduces the Big Bang theory of the origin of the universe. [Cosmology and Astronomy playlist: Lesson 7 of 85]
This 8-minute video lesson looks at the birth of stars. [Cosmology and Astronomy playlist: Lesson 16 of 85]