Instructional Video11:08
Math Fortress

Precalculus: Piecewise Defined Functions (Level 1) | Domain Restrictions, Graphing

12th - Higher Ed
This video introduces the basic procedures to successfully graph a piece wise defined function. The video covers 4 types of restrictions that can be applied to a functions domain. In addition, the video covers 4 examples that guides you...
Instructional Video6:47
Math Fortress

Algebra II: Introduction to Real Numbers | Natural, Integers, Rational, Irrational Numbers

12th - Higher Ed
This video goes over the basics of the real number system that is mainly used in Algebra. The video covers, natural numbers, integers, rational numbers, and irrational numbers.
Instructional Video
PBS

Pbs Learning Media: Ideas in Action: Get a Second Sentence

6th - 8th Standards
Common Core Mathematics identifies the significance of students having the ability to create second sentences alongside their math answers providing justification or explanation of their results. [1:20]
Instructional Video
PBS

Pbs Learning Media: Ideas in Action: Give Students Leadership

9th - 10th
Chris Luzniak introduces and encourages ownership in math classes. Students will discover conjectures in lessons, document it and sign their names to it. Following this exercise students work to prove whether these conjectures should be...
Instructional Video
PBS

Pbs Learning Media: Ideas in Action: Hand It Over to the Students

9th - 10th
Encourage peer work by limiting teacher instruction in front of the room. This provides students more working opportunity to practice in the classroom and work through challenges independently or in small groups to freely develop...