Through a variety of physical and theoretical situations, learners are led through the development of some of the deepest concepts in high school mathematics. Complex numbers, the fundamental theorem of algebra and rational exponents...

Natural human interest in patterns and algebraic study of function notation are linked in this introductory unit on the properties of sequences. Once presented with a pattern or situation, the class works through how to justify...

Trace the links between a variety of math concepts in this far-reaching unit. Ideas that seem very different on the outset (like the distance formula and rigid transformations) come together in very natural and logical ways. This...

[Free Registration/Login may be required to access all resource tools.] A learning module where students must apply the order of operations to find the missing numbers in equations involving addition, subtraction, and multiplication. A...

Practice finding the missing value in an addition or subtraction equation involving negative numbers. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Find missing divisors and dividends in 1-digit division problems. Quotients are less than or equal to 10. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video tutorial, or receive hints....

[Free Registration/Login may be required to access all resource tools.] The video shows how to use addition and subtraction to keep an equation balanced by working backwards to determine the missing value. The video is followed by...

[Free Registration/Login may be required to access all resource tools.] This is a set of practice problems where students solve addition and subtraction problems in order to determine missing numbers to keep the equation balanced. When...