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Wheel of Theodorus Extra Credit Project
Think it's possible to make a wheel out of triangles? According to this geometry project it is. Using their knowledge of the Pythagorean Theorem, young mathematicians carefully calculate and draw a series of right triangles that form...
7th - 8th Math CCSS: Adaptable
Area of a Triangle 1/2absinC Proof
Demonstrate the derivation of the trigonometric area formula for a triangle. Using the base/height formula and the sine ratio, the lesson instructor demonstrates how to combine the two and create the formula A = 1/2absinC. The video...
1 min 9th - 12th Math CCSS: Adaptable
Identifying the Sides of a Right Triangle
Find the right way to identify sides of right triangles. Scholars learn to correctly label the sides of a right triangle in the second video in a series of 16. The exercise is in preparation for determining trigonometric ratios.
3 mins 9th - 12th Math CCSS: Adaptable
The Mathematical Secrets of Pascal’s Triangle
This modern animation and discussion of the ancient secrets of Pascal's triangle manages to be topical, engaging, and mathematically deep all at the same time. A great introduction to the power of number theory across multiple math...
5 mins 7th - 12th Math CCSS: Adaptable
Interior Designers: Working with Right Triangles
Adding a career application, the resource explores the idea of making squares from the sides of a right triangle to show that the sums are equal. The question refers to designing a mural that leads the class into their own drawing of a...
7th - 8th Math CCSS: Designed
Pascal’s Triangle and Sierpinski Triangle
Your learners will enjoy this one-page, color-coded poster containing Pascal's triangle and its connection to Sierpinski's triangle. By coloring odd numbers orange and even numbers green on Pascal's triangle a pattern evolves,...
6th - 11th Math CCSS: Adaptable