Solving systems of equations underpins much of advanced algebra, especially linear algebra. Developing an intuition for the kinds and descriptions of solutions is key for success in those later courses. This intuition is exactly what...

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...

In this PowerPoint, students learn to distinguish between the terms "ancient" and "modern." The presentation gives visual and and written definitions of these words. Students respond to 5 questions that require them to decipher...