Texas Instruments
Texas Instruments: Numb3 Rs: Irregular Polygon Centroids
Based off of the hit television show NUMB3RS, this lesson has students explore finding the centroid of an irregular polygon by finding the mean of the coordinates of the polygon's vertices. Further, students find the centroid given that...
E-learning for Kids
E Learning for Kids: Math: World of Fish: Space
Join Otto at the Phantasia construction site. Will you help him build a new playground?
Illustrative Mathematics
Illustrative Mathematics: F Tf, G Co, Trigonometric Identities and Rigid Motions
The purpose of this task is to apply translations and reflections to the graphs of the functions f(x)=cos x and g(x)=sin x in order to derive some trigonometric identities. There are also rotations 180 degrees about points on the x-axis...