Curated Video
Everyone Got This SAT Math Question Wrong
Problem: Circle A has 1/3 the radius of circle B, and circle A rolls one trip around circle B. How many times will circle A revolve in total? 1982 SAT Question In the figure above, the radius of circle A is one third the radius of circle...
Curated Video
Almost Everyone Got This Question Wrong. Can You Solve It?
A tetrahedron and a pyramid have edges of equal length. If they are glued together on a triangular face with the vertices aligned, how many faces will the new shape have? This question is trickier than it looks! It stumped the...
Educreations
Using the Zero Product Property to Solve Quadratic Functions
The last step of solving a quadratic factoring problem is often the stumbling block for algebra learners. Setting each factor equal to zero and solving the mini-equations isn't an intuitive process to learners new to the zero...