Curated Video
Classifying Quadrilaterals Based on Parallel Sides
Classifying quadrilaterals based on the number of parallel sides.
Curated Video
Angles in Parallelograms
Identifying special types of parallelograms based on the angle properties.
Curated Video
Angle Properties in Triangles
Identifying special types of triangles based on the angle properties such as right triangles, obtuse triangles, and acute triangles.
Curated Video
Polygons and Special Types of Polygons
Identifying the properties of polygons and special types of polygons like quadrilaterals and triangles.
CK-12 Foundation
Ck 12: Elem Math: Overview of Rectangles Squares Circles and Triangles
[Free Registration/Login may be required to access all resource tools.] Students watch a video overview on various two dimensional shapes including rectangles, squares, circles and triangles.
CK-12 Foundation
Ck 12: Elem Math: Overview of Lines Curves Vertices and Sides of 2 D Shapes
[Free Registration/Login may be required to access all resource tools.] Students watch a video overview on lines, curves and vertices of two dimensional shapes.
CK-12 Foundation
Ck 12: Elem Math: Overview of Tessellations
[Free Registration/Login may be required to access all resource tools.] Students can watch a video overview on tessellations.
Khan Academy
Khan Academy: Long Live Tau: Pi Is (Still) Wrong.
Please excuse the simple math and spelling errors. You shouldn't believe anything I say without double-checking even at the best of times. Go here: http://tauday.com/ and here: http://www.math.utah.edu/~palais/pi.html Me: http://vihart.com
Khan Academy
Khan Academy: Triangles: Another Pythagorean Theorem Proof
Students explore the Pythagorean Theorem by exploring a visual proof of the Theorem as they watch a video tutorial.
Khan Academy
Khan Academy: Hexaflexagons: Hexaflexagons
Watch a video to explore what a hexaflexagon is.
Sophia Learning
Sophia: Calculating the Area of a Circle
Determine the area of a circle with the given formula.
Sophia Learning
Sophia: Calculating the Area of a Triangle
Use different size triangle to determine how to solve for the area in this video lesson. Take quiz to check understanding. [3:41]
Sophia Learning
Sophia: Circle Tutorial
In this video tutorial, a circle is defined further with a mathematical definition and explained using a blue hole in the ocean. A short quiz is available to complete after viewing the video. [2:41]
Sophia Learning
Sophia: Comparing Objects to Scale Models
Measure the length of an object using a scale model.
Sophia Learning
Sophia: What Composite Figures Are
This lesson defines the phrase composite figure. Students can watch a video tutorial and then take an online quiz.
Sophia Learning
Sophia: Diagonals in Regular Polygons
In this video tutorial, the instructor demonstrates how to determine the number of diagonals in a regular polygon by looking at the number of vertices, and the number of diagonals. Use the formula to complete the assessment to check...
Sophia Learning
Sophia: Diagonals in Regular Polygons
In this video tutorial, the instructor uses data to derive the formula to solve for number of diagonals in a regular polygon. Assess understanding with a quiz. [5:43]
Sophia Learning
Sophia: Diagonals of a Rhombus
Explore how to solve for the diagonal length of a rhombus when given the area. Assess learning with a quiz.
Sophia Learning
Sophia: Pythagorean Theorem and Right Triangles
Determine if the Pythagorean theorem can be used with triangles that are not right triangles. Assess learning with a quiz.
Sophia Learning
Sophia: Scale and Similar Figures
This video tutorial [5:22] explores how objects are represented in a scale drawing to show they are similar. Assess learning with a quiz.
Sophia Learning
Sophia: Solving for Unknown Sides of Similar Triangles
Solve for unknown sides of similar triangles and take a quiz to assess learning.
Sophia Learning
Sophia: Square Practice Problems
This video demonstrates how to prove that a square is a square by solving for variables, side lengths, and angle measures. Assess learning with a quiz. [11:30]
Sophia Learning
Sophia: Tessellation
This lesson defines the term tessellation. Students watch a video tutorial and then can take an online quiz.
Sophia Learning
Sophia: Altitude and Height Are the Same Thing
In this video tutorial, use a triangle to determine the height/altitude then assess learning with a quiz. [4:56]