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See similar resources:
The Notorious Four-Color ProblemLesson Planet: Curated OER
Take a walk through time, 1852 to 2005, following the mathematical history, development, and solution of the Four-Color Theorem. Learners take on the role of cartographers to study a United States map that is to be colored. One rule: no...
9th - 12th Math CCSS: Adaptable
Similar TrianglesLesson Planet: Curated OER
Proving triangles are similar is often an exercise in applying one of the many theorems young geometers memorize, like the AA similarity criteria. But proving that the criteria themselves are valid from basic principles is a great...
9th - 11th Math CCSS: Designed
The Four-Color Problem: Concept and SolutionLesson Planet: Curated OER
Take a walk through time, 1852 to 1994, following the mathematical history and development of the Four-Color Theorem. Learners take on the role of cartographers to study an imaginary world of countries that need to be mapped. One rule:...
8th - 12th Math CCSS: Adaptable
Area of a Triangle 1/2absinC ProofLesson Planet: Curated OER
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
Find the Base of a Triangle Given AreaLesson Planet: Curated OER
Base a lesson on an informative video perfect for expanding your class's knowledge of triangles. Young mathematicians watch a brief YouTube video that teaches how to solve for the base of a triangle given its height and area. It also...
3 mins 7th - 10th Math CCSS: Adaptable
Identifying the Sides of a Right TriangleLesson Planet: Curated OER
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.
9th - 12th Math CCSS: Adaptable
The Mathematical Secrets of Pascal’s TriangleLesson Planet: Curated OER
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
Family Activity - Color by Numbers: Fractions, Decimals, and PercentsLesson Planet: Curated OER
Learners solve four short answer problems. They determine the number of each color of candy or paper clip in a bag, and calculate the fractional, decimal, and percentage representation of the color compared to the total number of items.
6th - 8th Math
Pascal’s Triangle and Sierpinski TriangleLesson Planet: Curated OER
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