Khan Academy
SAT Prep: Test 3 Section 4 Part 2
Sal explains how helping his young cousins with their math skills inspired him to make this series of videos, so he can help a bunch of people pass the SAT. In this video, he covers exponents, quadratics, and parabolas in problems 5-9 on...
Khan Academy
SAT Prep: Test 7 Section 8 Part 1
A new set of SAT practice questions from the Official SAT Study Guide (page 803) greets Sal and the viewer. Problems 1-7 involve basic algebraic equations, linear equations, and geometric figures.
Khan Academy
SAT Prep: Test 3 Section 8 Part 2
Problems 7-9 involve exponents, inequalities, and geometric figures (diameter and radius), all of which Sal explores eagerly. After misreading one problem, he takes care to correct his mistake, showing students how important it is to...
Khan Academy
SAT Prep: Test 1 Section 3 Part 3
Sal demonstrates the methods needed to solve problems 8-10 in this video. He begins his lecture with a more thorough explanation of problem 7 (which he feels he "rushed" in the last video). These problems involve skills such as...
Khan Academy
Negative Exponent Intuition, Pre-Algebra
"Demystifying" an often mysterious problem, Sal demonstrates some tricks for considering exponents intuitively, rather than working them out each time. He first takes viewers through positive exponents and works up to negative exponents,...
Khan Academy
Example 4: Factoring Quadratics as a Perfect Square of a Difference: (a-b)^2
Introduce young mathematicians to the concept of factoring trinomials with perfect squares. This descriptive video provides a meaningful explanation of the factoring process. Each step is carefully written out in various colors during...
Khan Academy
Exponent Example 2, Exponents, Radicals, and Scientific Notation, Pre-Algebra
Many young mathematicians get slightly confused when they are introduced to the concept of exponents. This resource will ensure that they never get confused again. Sal explains, quite emphatically, that six to the eighth power is NOT the...
Khan Academy
Exponent Example 1, Exponents, Radicals, and Scientific Notation, Pre-Algebra
Explain an exponential number. Sal shows that five to the third power is 5x5x5 while 5x3 is 5+5+5. He demonstrates that they have very different answers. Note: This is part two in a set of videos on exponents. It may serve students best...
Khan Academy
SAT Prep: Test 8 Section 8 Part 2
One of Sal's greatest gifts to students in this SAT video series has been his demonstration of word problems. Because he writes out equations while simultaneously reading the information provided, he often arrives at the correct answer...
Khan Academy
SAT Prep: Test 7 Section 2 Part 3
The problems are getting a little more difficult in this video, which covers problems 13-16 on page 778, but Sal is still easy to understand. He demonstrates various strategies for solving algebraic expressions and problems involving...
Khan Academy
SAT Prep: Test 7 Section 5 Part 4
Transitioning between algebra and geometry is no problem for Sal as he deftly solves these practice SAT problems. Mathematicians who have a hard time moving between skill sets will appreciate the way that Sal addresses each new problem...
Khan Academy
Evaluating an Algebraic Expression with Exponents
Here is the first video in a three-part series on evaluating exponential expressions. Sal Khan evaluates an exponential expression, reminding students to use PEMDAS while he demonstrates and explains his algebraic reasoning.
Mathispower4u
Exponent Review (Example 1)
It's easy to become an expert on exponents. Viewers of an educational video first review the properties of exponents. They then see examples covering multiplying and dividing exponents, applying the power property, and rewriting...
Mathispower4u
Exponent Review (Example 2)
Expect to learn a lot about exponents. An instructional video works through examples that show how to apply the properties of exponents when there are two variables, x and y. Scholars learn about the product of powers property, the...
Flipped Math
Rational Exponents
The power of a good lesson is exponential. Young mathematicians view a video lesson that introduces rational exponents and how exponent properties apply. They then use properties of exponents to solve exponential equations with rational...
Mathispower4u
Negative Exponents - Fractions with Powers Raised to Powers (Example)
Get a little practice. The video contains three examples of simplifying fractions involving negative exponents. Pupils get an opportunity to refresh their knowledge of exponent properties as they watch the presenter use different methods...
Mathispower4u
Evaluate an Expression with a Negative Exponent
The same rules apply. While watching the video, learners realize that the same rules apply to evaluate an expression with negative exponents as does simplifying an expression. The presentation shows a set of steps to evaluate a monomial...
Mathispower4u
Simplify an Expression with a Negative Exponent
Recognize the base. Part of a larger Algebra I series, the short video highlights the importance of recognizing the base to simplify expressions with exponents. In doing so, pupils notice the basic property that uses negative exponents.
Mathispower4u
Simplify a Fraction Raised to a Negative Power
Flip the fraction and continue. Given a fraction raised to a negative power, the narrator shows pupils two methods of simplifying the expression. Using different properties of negative exponents, the he demonstrates that either method...
Mathispower4u
Simplify a Quotient of Expressions with Neg Exponents (Adv -2 Methods)
Even with complex quotients, there is still more than one way to simplify an expression. The narrator of a short shows two methods of simplification when dealing with expressions with negative exponents. One method follows the more...
Mathispower4u
Simplify a Quotient of Expressions with Neg Exponents (2 Methods)
Is this method better, or this one? Given a quotient of expressions that involve negative exponents, the narrator of a short video works through two methods of simplification. The first method relies on positive exponents, while the...
Mathispower4u
Simplify a Product of Expressions with Neg Exponents (2 Methods)
Which method works best for you? Using a product, an informative video shows two methods to simplify the resulting expression. One method starts by rewriting the expression with only positive exponents. The other method uses the...
Mathispower4u
Simplify Basic Expressions with Negative Exponents
Identifying the base is extremely important. Using five problems with negative exponents, the narrator demonstrates that knowing the base is important in simplifying algebraic expressions. The different problems use the same numbers but...
Mathispower4u
Negative Exponents
Extend exponent properties beyond zero. After a quick review of the properties of exponents as they relate to negative exponents, the narrator works several examples for viewers. The examples start with simple, requiring only one...