Lumos Video Store
This page provides a list of educational videos related to Exploring Patterns in Geometry. You can also use this page to find sample questions, apps, worksheets, lessons , infographics and presentations related to Exploring Patterns in Geometry.
Volume of a sphere | Perimeter, area, and volume | Geometry | Khan Academy
By Khan Academy
"Find the volume of a sphere with a diameter of 14cm." Sal Khan solves this problem during this video clip.
CA Geometry: Circle area chords tangent | Worked examples | Geometry | Khan Academy
By Khan Academy
71-75, area, chords, tangents of circles. All Khan Academy content is available for free at www.khanacademy.org
Finding area using similarity and congruence | Similarity | Geometry | Khan Academy
By Khan Academy
Example of using similarity and congruence to find the area of a triangle
Geometry - 19 - Pyramids - Volume, Lateral Area, and Total Area
By thenewboston
This video shows how to find the volume, lateral area, and total surface area of a pyramid.
Geometry - 15 - Arc Length and Sector Area
By thenewboston
Geometry - 15 - Arc Length and Sector Area
Area of inscribed equilateral triangle (some basic trig used) | Circles | Geometry | Khan Academy
By Khan Academy
This video will give you a good feel for what inscribed figures are like. It uses some trigonometry to figure out what the area of an equilateral triangle inscribed in a circle is, given the circle's radius. NOTE: We don't actually need trigonometry to solve this problem. Notice that we can view the equilateral triangle as six identical 30-60-90 triangles, the hypotenuses of which are radii of the circle, then use the 30-60-90 triangle side length ratios to figure out the rest of what we need to know to solve the problem.
Area of a Trapezoid - YourTeacher.com - Geometry Help
By yourteachermathhelp
For a complete lesson on area of a trapezoid go to http://www.yourteacher.com - 1000+ online math lessons featuring a personal math teacher inside every lesson! In this lesson students learn the formula for the area of a trapezoid and are asked to solve problems using this formula. Note that right triangle formulas and trigonometry are used extensively in the problems in this lesson.
Area of inscribed equilateral triangle (some basic trig used) | Circles | Geometry | Khan Academy
By Khan Academy
This video will give you a good feel for what inscribed figures are like. It uses some trigonometry to figure out what the area of an equilateral triangle inscribed in a circle is, given the circle's radius. NOTE: We don't actually need trigonometry to solve this problem. Notice that we can view the equilateral triangle as six identical 30-60-90 triangles, the hypotenuses of which are radii of the circle, then use the 30-60-90 triangle side length ratios to figure out the rest of what we need to know to solve the problem.
Triangle inequality theorem | Perimeter, area, and volume | Geometry | Khan Academy
By Khan Academy
Salman Khan offers his intuition behind the triangle inequality theorem during this six-minute video lesson.
Labeling parts of a circle | Perimeter, area, and volume | Geometry | Khan Academy
By Khan Academy
Learn more: http://www.khanacademy.org/video?v=04N79tItPEA u07_l2_t3_we1 Parts of a Circle Content provided by TheNROCproject.org - (c) Monterey Institute for Technology and Education
Rotating 2D shapes in 3D | Perimeter, area, and volume | Geometry | Khan Academy
By Khan Academy
This video shows the effect of rotating a 2D shape to show the relationship between 2D and 3D shapes.
Area of a Triangle - MathHelp.com - Geometry Help
By yourteachermathhelp
Students learn the formula for the area of a triangle and are asked to solve problems using this formula. Note that right triangle formulas and trigonometry are used extensively in the problems in this lesson.
Grade 3 Math - Relating Multiplication and Division
By Lumos Learning
Using the Lumos Study Programs, parents and educators can reinforce the classroom learning experience for children and help them succeed at school and on the standardized tests. Lumos books, dvd, eLearning and tutoring are used by leading schools, libraries and thousands of parents to supplement classroom learning and improve student achievement in the standardized tests.
Grade 6 Math - Unit Rates
By Lumos Learning
Using the Lumos Study Programs, parents and educators can reinforce the classroom learning experience for children and help them succeed at school and on the standardized tests. Lumos books, dvd, eLearning and tutoring are used by leading schools, libraries and thousands of parents to supplement classroom learning and improve student achievement in the standardized tests.
Grade 7 Math - Mean, Median, and Mean Absolute Deviation
By Lumos Learning
Using the Lumos Study Programs, parents and educators can reinforce the classroom learning experience for children and help them succeed at school and on the standardized tests. Lumos books, dvd, eLearning and tutoring are used by leading schools, libraries and thousands of parents to supplement classroom learning and improve student achievement in the standardized tests.
Grade 3 Math - Graphs
By Lumos Learning
Using the Lumos Study Programs, parents and educators can reinforce the classroom learning experience for children and help them succeed at school and on the standardized tests. Lumos books, dvd, eLearning and tutoring are used by leading schools, libraries and thousands of parents to supplement classroom learning and improve student achievement in the standardized tests.
Grade 7 Math - Multiplication & Division of Rational Numbers
By Lumos Learning
Using the Lumos Study Programs, parents and educators can reinforce the classroom learning experience for children and help them succeed at school and on the standardized tests. Lumos books, dvd, eLearning and tutoring are used by leading schools, libraries and thousands of parents to supplement classroom learning and improve student achievement in the standardized tests.
Grade 7 Math - Unit Rates
By Lumos Learning
Using the Lumos Study Programs, parents and educators can reinforce the classroom learning experience for children and help them succeed at school and on the standardized tests. Lumos books, dvd, eLearning and tutoring are used by leading schools, libraries and thousands of parents to supplement classroom learning and improve student achievement in the standardized tests.
Grade 5 Math - Division of Whole Numbers
By Lumos Learning
Using the Lumos Study Programs, parents and educators can reinforce the classroom learning experience for children and help them succeed at school and on the standardized tests. Lumos books, dvd, eLearning and tutoring are used by leading schools, libraries and thousands of parents to supplement classroom learning and improve student achievement in the standardized tests.
Grade 6 Math - Division of Whole Numbers
By Lumos Learning
Using the Lumos Study Programs, parents and educators can reinforce the classroom learning experience for children and help them succeed at school and on the standardized tests. Lumos books, dvd, eLearning and tutoring are used by leading schools, libraries and thousands of parents to supplement classroom learning and improve student achievement in the standardized tests.