Khan Academy
Khan Academy: Slicing a Rectangular Pyramid
Demonstrates what types of shapes one can get in a cross-section when a rectangular pyramid is sliced. [3:29]
Khan Academy
Khan Academy: Cylinder Volume and Surface Area
Looks at how to find the volume and the surface area of a cylinder using the standard geometric formulas. [8:07]
Khan Academy
Khan Academy: Volume of a Cone
A video exploring how to calculate the volume of a cone. [5:43]
Khan Academy
Khan Academy: Performing Reflections: Quadrilateral
Demonstrates how to use an interactive tool to find the reflection of a quadrilateral on a Cartesian grid. Includes a discussion of slope. [2:26]
Khan Academy
Khan Academy: Triangles: Intro to Triangle Similarity
Explains what it means for two triangles to be similar. Diagram of similar triangles is created with two parallel lines cut by two transversals.
Khan Academy
Khan Academy: Counting Faces and Edges of 3 D Shapes
Sal identifies the faces and edges on various 3D shapes. [3:36]
Khan Academy
Khan Academy: Recognizing Common 3 D Shapes
Sal identifies the following 3D shapes: square pyramid, rectangular prism, triangular prism, cylinder, and cone. [3:28]
Khan Academy
Khan Academy: Parallel & Perpendicular Lines Intro
Learn the properties of parallel and perpendicular lines so that you can easily identify them. [2:08]
Khan Academy
Khan Academy: Halves and Fourths
Demonstrates what equal parts look like when dividing shapes into halves and quarters. [2:25]
Khan Academy
Khan Academy: Decomposing Shapes to Find Area: Grids
Demonstrates how to break an irregular shape into its parts, find the individual areas, and then add them together. [2:51]
Khan Academy
Khan Academy: Composing Shapes
Shows how shapes can be put together to make new shapes. [2:04]
Khan Academy
Khan Academy: Ratio Word Problem: Centimeters to Kilometers
Demonstrates how to use ratios to solve a map scale problem. [1:12]
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