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Aromatic Compounds and Huckel's Rule
Sal gives a good recap of the pi electron behavior in aromatic compounds originating from a benzene ring. He diagrams the hybridization leading to a conjugated system of pi electrons and compares their stability.
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Amine in Sn2 Part 2
An advanced chemistry class will understand Sal's reaction and see his logic in explaining the equilibrium. The levels of electronegativity and likelihood of a nucleophilic attack are balanced and presented in the equation. This is an...
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Square Roots And Real Numbers, Pre-Algebra
Sal works through several problems involving rational and irrational numbers and shows how to find the difference. This video is a good stepping stone for those preparing to take on more challenging algebra work.
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How to Rationalize a Denominator, Exponent Expressions and Equations, Algebra I
"Sal, why do we care? Why must we rationalize denominators?" Acknowledging these (possibly pleading) concerns, Sal explains the reasons behind rationalizing a denominator before demonstrating how to do it several times. Though he admits...
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Banking 17: What Happened to the gold?
Learn the value of a dollar in this video, which explains the natural transition from the gold standard. Asking viewers if they would trust gold or the U.S. Government, Sal explains how the concept of wealth has shifted and adapted...
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SAT Prep: Test 5 Section 7 Part 6
Give your students the edge on their upcoming SAT with this video, which covers algebraic and linear equations. Math students who have a hard time transitioning between skills would benefit from seeing Sal do so.
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Standard Form for Linear Equations
Illuminate the world of mathematics for your class, specifically, the process of linear equations. In this video, Sal teaches about linear equations in standard form after two videos on slope-intercept and slope-point forms. He defines...
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Factoring Special Products, Polynomial and Rational Functions, Algebra II
"Just to get the point drilled into your head," Sal continues his lecture on factoring quadratic expressions, focusing on special products. He works to instill the problem-solving skills necessary to factor in equations quickly and...
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Modeling with Linear Equations Example 2
Sal takes your class’s newfound (or growing) knowledge of graphs of lines to the next level. He presents a few word problems that mathematicians must understand to use linear function graphs.
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SAT Prep: Test 5 Section 3 Part 2
Going over the last problem from the previous video (problem 5), Sal explains his thought process more carefully. Additionally, he solves problems involving measuring angles, algebraic expressions, and averages.
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SAT Prep: Test 5 Section 3 Part 1
Sal starts a new set of practice SAT problems in this video, starting on page 652 of The Official SAT Study Guide. Problems involve fractions and ratios, simplifying equations, and finding the perimeter of given coordinates on a plane.
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SAT Prep: Test 4 Section 8 Part 2
Young mathematicians will appreciate Sal's careful - yet efficient - methods for solving these typical SAT problems. He takes care to explain problems 8-12, but gets cut off in the middle of problem 12 (to be continues in the next video).
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SAT Prep: Test 2 Section 6 Part 2
Reviewing the last problem from the previous video because he feels that he "rushed it," Sal again explains the concept of ratios as it applies to problem 6 on the practice SAT (page 472 in The Official SAT Study Guide). Additional...
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SAT Prep: Test 2 Section 3 Part 1
Page 459 of The Official SAT Study Guide by The College Board features another set of practice SAT math problems, beginning with problems 1-4. Sal demonstrates how to solve problems with factoring and visualization.
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SAT Prep: Test 7 Section 5 Part 3
Choosing the "quick and dirty" method of solving problems rather than more mathematically complicated, Sal shows students the importance of time management when taking the SAT (or other math tests). He still arrives at correct answers,...
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SAT Prep: Test 5 Section 7 Part 1
A new SAT practice session (from page 669 of The Official SAT Study Guide) begins with problems 1-5. Sal demonstrates quick thinking and contemplative problem solving as he moves efficiently from one equation to the next.
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SAT Prep: Test 1 Section 3 Part 2
Problems 6-7 on page 396 of The Official SAT Study Guide are covered in this video, which includes both strategies for solving the equations and finding the answer in a multiple choice question. The problems in this video range from...
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Federal Reserve Balance Sheet
With an actual balance sheet from the Federal Reserve (from 2007, before all of the "banking silliness" began to happen), Sal walks viewers through the Fed's assets, liabilities, and equity. Pupils will be pleased to see how the theories...
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SAT Prep: Test 1 Section 3 Part 4
Pushing through to problems 11-12 on page 398 of The Official SAT Study Guide, Sal goes into comprehensive detail on each problem. Problem 11 involves geometry, including the function of pi, and problem 12 involves non-constant slopes....
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Speed Translation
Teaching young mathematicians to use consistent units in their expressions and numbers, Sal demonstrates several ways to translate speed units in pre-algebra. He encourages viewers to memorize common speed units, such as the number of...
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SAT Prep: Test 4 Section 2 Part 5
Picking up where he left off (problem 17), Sal demonstrates graphing functions with an informative and clear explanation. Additionally, problem 18 involves finding the values of angles in an equilateral triangle.
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SAT Prep: Test 1 Section 9 Part 3
If it takes a long time to complete the problems on the math SAT, it doesn't matter if they are correct - the problems that are left over will count against the student's score. Sal takes care to show quicker ways to complete problems...
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SAT Prep: Test 1 Section 3 Part 6
Admitting that the SAT "can be tiring" (and knowing that comment probably inspired an eye-roll from your students), Sal continues his lecture series with problems 15-16. These problems focus on graphing patterns and volume, both of which...
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SAT Prep: Test 6 Section 3 Part 3
Continuing problem 7 from the previous video, Sal takes students through what he describes as "a common SAT problem" involving geometric lines and figures. Additional problems deal with sequences, cross-multiplication, and measuring...