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SAT Prep: Test 3 Section 4 Part 1
Modeling quick thinking and efficient problem solving, Sal works through the linear equation in problem 1 in just over 30 seconds. This video, which covers problems 1-5 on page 530 of The Official SAT Study Guide, also shows students how...
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Negative Numbers Introduction, Negative Numbers and Absolute Value, Pre-Algebra
Sal tackles pre-algebra in this series of videos, starting with the concept of negative numbers. Using a number line, he takes the viewer through different practical examples of negative numbers, such as temperature and bank accounts....
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SAT Prep: Test 7 Section 8 Part 4
Finishing this practice session, Sal takes care to address the last three problems, which are also the most complicated of the set. Problem 14 is a tricky algebra question that results in Sal plugging in the multiple choice answers to...
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SAT Prep: Test 4 Section 2 Part 4
Taking time to thoroughly explain and work through problems 15-16, Sal models careful reading and problem solving. He begins problem 17 but continues it in the next video.
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SAT Prep: Test 8 Section 2 Part 4
Advising students to become comfortable with the 30-60-90 triangles as an SAT prep skill, Sal finishes this review session with a geometry problem, an algebra problem with fractions, slopes, and median numbers. His tips and test-taking...
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SAT Prep: Test 7 Section 2 Part 1
Sal picks up the pace in this video, going through problems 1-7 on page 774 of The Official SAT Study Guide. Basic algebra, arithmetic, and geometry problems start out this section, allowing students to build up some steam before hitting...
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Multiplying and Dividing with Significant Figures, Decimals, Pre-Algebra
Sal takes out the big guns—or, in this case, the big calculator—in this video, which takes the concept of significant figures even further. Sal shows how to multiply and divide significant figures using electronic and handwritten...
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SAT Prep: Test 7 Section 5 Part 1
The beginning of a new set of SAT practice problems from The Official SAT Study Guide involves sequences, distribution, combinations, and geometric figures. Sal makes sure to provide thorough explanations to each problem, while...
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SAT Prep: Test 5 Section 7 Part 4
Spending more than half of the video readdressing the nuances in problem 13 (previously discussed in the last video), Sal ensures that students understand the tricky word problem by going through each of the multiple choice answers....
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SAT Prep: Test 3 Section 2 Part 2
Problem number 6 on the practice SAT involves solving for a distance on a line, which Sal does in about 2 minutes. His method of efficiently (and correctly) solving problems is an excellent model for students who tend to panic at the...
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SAT Prep: Test 5 Section 3 Part 5
Problem 15 on the practice SAT (page 657) prompts students to solve a word problem using a number of given constraints. Additional problems involve finding the radius of a circle (given the radius of a smaller circle) and prime...
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SAT Prep: Test 6 Section 7 Part 2
Helping students realize the common missteps in solving the average SAT problem, Sal creates a lens through which students can clearly see the correct and incorrect approach to each type of problem. He points out what a student might...
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Exponent Properties Involving Quotients (Examples)
This video focuses on a series of problems involving exponent properties. Sal demonstrates rational expressions, simplifying fractions, and manipulating algebraic equations using exponents and division.
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More Organic Chemistry Naming Examples 1
Practice makes the concepts of naming much easier. Here, Sal runs through 5 even more complicated examples, while encouraging viewers to do the same. The main development explained here is the addition of multiple types of side chains to...
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Inequalities Using Addition and Subtraction, Linear Inequalities, Algebra I
Beginning with a "handful of fairly simple inequality videos," Sal demonstrates a few inequality problems in which mathematicians must add or subtract. Though he states that his goal is to familiarize viewers with the notation, his...
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How to Solve Equations of the Form x/a = b, Linear Equations, Algebra I
Help your students understand how to use their algebraic reasoning to solve a one-step equation, where they must solve for X. Add this video to a lesson or assign it as homework.
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Multiplying Fractions and Whole Numbers: Mixed Number Answer, Pre-Algebra
Here is a great video explaining multiplying a fraction by a whole number. Sal shows students how to put a whole number over 1 to multiply it by a fraction. He simplifies his answer and writes it as a mixed number.
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Adding Fractions with Like Denominators, Fractions, Pre-Algebra
Show your students this presentation to help them understand how to add fractions with like denominators. Sal adds 3/15 to 7/15 and then simplifies his answer. He uses drawings and multiple colors to show the actual process.
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Adding Mixed Numbers, Fractions, Pre-Algebra
This video will demonstrate adding mixed numbers. Sal explains that adding mixed numbers can be done by looking at the whole number separately from the fraction. Because his explanation is brief, this video would be great as a supplement...
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Scientific Notation Examples, Pre-Algebra
Explaining scientific notation is useful because "it allows us to write large or small numbers in ways that are easy for our brains to write down and understand." Sal proceeds to solve a few practice problems involving scientific...
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Multiplying in Scientific Notation (Example), Pre-Algebra
Apply the concept of scientific notation to a word problem involving the rate of speed. Sal explains how to express the answer using scientific notation.
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Worked Example: Determining an Empirical Formula from Combustion Data
Sal builds on the previous video, which shows students how to calculate the mass composition of a compound from its empirical formula. This problem uses the elements Hydrogen, Oxygen, and Sulfur. The process requires a lot of conversions...
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FRB Commentary 3: Big Picture
Summarizing his thoughts on creating the last few videos on the weaknesses of the fractional reserve, Sal goes on to explain why he believes the nature of this system is "disingenuous. " This leads to a discussion that contextualizes the...
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Fractional Reserve Banking Commentary 1
After a short review of the banking process and lending procedures, Sal outlines some of the problems and weaknesses of fractional reserve banking. Additionally, he details the differences between illiquidity and insolvency, as well as...