Khan Academy
Introduction to Graphing Inequalities, Two-Variable Linear Inequalities, Algebra I
If your class struggles with graphing inequalities, or if your lecture could use some help from Sal, this video would be a great help. Sal's instruction is measured and patient, and viewers will walk away feeling more confident and...
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Common Divisibility Examples, Factors and Multiples, Pre-Algebra
Equipped with several examples from the attached module and from standardized tests, Sal takes viewers through the process of prime factorization and divisibility. He demonstrates each skill several times with many different numbers,...
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Fitting a Line to Data, Regression, Probability and Statistics
Sal trades his tablet for an Excel spreadsheet in this video, which covers fitting data to a line. Using a word problem about median income, he not only solves the problem but also demonstrates how to use scatter plots and Excel tools in...
Khan Academy
SAT Prep: Test 4 Section 2 Part 6
If students require deeper explanations on algebra problems, this video (which ends this practice SAT session) would be beneficial. Sal goes into detail about his methodology and thought process behind some of the more difficult problems...
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Addition of Rational Numbers
Are your pupils having problems with fractions in algebra problems? Have no fear; Sal is here! Sal takes care to guide them through the intricacies of fractions within an algebraic context, and his explanation of word problems will have...
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SAT Prep: Test 3 Section 8 Part 4
Fans of algebra, geometry, and hamsters will enjoy this video, which finishes this practice test with problems 15-16. Sal carefully, methodically, and efficiently takes students through the necessary steps for solving increasingly...
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SAT Prep: Test 1 Section 9 Part 4
Sal tackles problems 12-14 of the practice SAT, which deal with linear equations (with negative numbers and radicals). Demonstrating more than one way to solve the problems, Sal takes care to note the most efficient ways to still arrive...
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SAT Prep: Test 1 Section 3 Part 7
Not only solving the problems but deciphering the methods behind them, this video assists students with test-taking strategies, such as solving for x in algebraic equations quickly, efficiently, and correctly. Problems 17-18 on page 399...
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SAT Prep: Test 8 Section 8 Part 3
The final video of the SAT practice series takes students through increasingly complicated algebra and geometry problems, but Sal works steadily through each mathematical process. At the end of the video he tells students that they are...
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SAT Prep: Test 2 Section 6 Part 6
The most valuable part of this video isn't math-related (even though the math strategies are quite helpful); it's the way Sal replaces part of a problem that confuses him with easy-to-manipulate variable letters. Students who get hung up...
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SAT Prep: Test 6 Section 9 Part 4
Putting the finishing touches on this practice session, Sal takes students through an algebra problem involving percentages (or decimals, as he prefers) and a geometry problem with equilateral rectangles. Students who need a little more...
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SAT Prep: Test 1 Section 9 Part 5
Finishing up this practice test, Sal shows how to complete the graphing and linear equations in problems 13-14. Students will rest assured after seeing him deftly navigate the ins and outs of these diagrams, making the SAT seem less...
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SAT Prep: Test 6 Section 7 Part 6
Sal has a good time solving problem 20 on page 738, allowing students to look past the "trickiness" of SAT problems and, possibly, to enjoy solving the problem. He takes them through each step of the problem, taking care to point out the...
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Solving Radical Equations, Exponent Expressions and Equations, Algebra I
Continue your lecture on radical equations with this video, which features Sal solving a few more problems with his classic clarity and understandable way. Young mathematicians will benefit immensely from seeing his cool hand guide the...
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SAT Prep: Test 5 Section 3 Part 6
A potentially scary equation ends this practice session. However, it is no match for Sal's mathematical prowess. And once they watch him make the complicated methodology simple, your students will feel more confident in their own...
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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,...
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Order of Operations Example, Arithmetic Properties, Pre-Algebra
Please Excuse My Dear Aunt Sally - or whichever mnemonic your students use for the order of operations - is the focus of this video. Sal takes viewers through various mathematical equations that require the use of the order of...
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SAT Prep: Test 7 Section 5 Part 5
Sal completes problem 20 from this session of the practice SAT (page 796). He draws the parallelogram necessary for solving the problem, and spends a good amount of time explaining the process and method behind the answer. This video is...
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SAT Prep: Test 2 Section 3 Part 4
SAT test-takers get to review median numbers, perimeters, right angles, slopes, and prime factorization in this video, which focuses on problems 13-16. Sal's even pace and methodical problem solving will bolster the confidence of even...
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A Look at a Seductive but Wrong Gibbs/Spontaneity Proof
Sal takes issue with a proof that some students suggested he use to calculate spontaneity in reactions. He contends that the proof is incorrect and uses this video to illustrate his reasons clearly.
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Shells, Subshells, and Orbitals
A more detailed description and definition of orbitals, and the role they play in the atomic world, are the focus of this video. The "P Orbitals" are described by taking a close look at the carbon element's properties. The periodic table...
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Introduction to Kinetics, Energy and Enzymes, Biology
The focus of this chemistry video is kinetics, which is the study of precisely what happens to compounds when they react together. Specifically, kinetics is the study of the rate of chemical reactions and the forces that affect that...
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Anatomy of a Muscle Cell
Previous videos have dealt with the proteins that produce mechanical motion and how nerves stimulate contraction. But this presentation explains, on a gross anatomical scale, how skeletal muscle is structured.
Khan Academy
Multiplying and Dividing with Inequalities Example, Linear Inequalities, Algebra I
Sal expounds on the concept of solving and graphing one-step inequalities. He solves two practice problems along the way. If shown in conjunction with Khan's other inequality video lesson, they would make a great lesson on inequalities.