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Add, subtract, multiply, and divide numerical radical terms
By Khan Academy
Sal shows how to group like terms to subtract and simplify radical terms, by simplifying the expression 4������������������(81x^5)-2������������������(81x^5)-������������������(x^3).
High School Algebra
By
High school algegra lesson related to MA Curriculum Frameworks Mathematics Standard A-SSE.1 (Interpret expressions that represent a quantity in terms of its context). The activity required of students was combining like terms – a concept which is first introduced in 6.EE.4. T. Teacher introduces Algetile pieces.
Trigonometric Substitution
By The Organic Chemistry Tutor
This calculus video tutorial provides a basic introduction into trigonometric substitution. It explains when to substitute x with sin, cos, or sec. It also explains how to perform a change of variables using u-substitution integration techniques and how to use right triangle trigonometry with sohcahtoa to convert back from angles in the form of theta to an x variable. There's plenty of examples and practice problems in this lesson.
ALL OF GRADE 9 MATH IN 60 MINUTES!!! (exam review part 1)
By Lumos Learning
Here is a great exam review video reviewing all of the main concepts you would have learned in the MPM1D grade 9 academic math course. The video is divided in to 3 parts. This is part 1: Algebra. The main topics in this section are exponent laws, polynomials, distributive property, and solving first degree equations. Please watch part 2 and 3 for a review of linear relations and geometry. If you watch all 3 parts, you will have reviewed all of grade 9 math in 60 minutes. Enjoy! Visit jensenmath.ca for more videos and course materials.