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Adding Mixed Numbers Word Problem, Fractions | Pre-Algebra
Have your students solve this word problem along with Sal. He adds mixed numbers to solve the problem and shows what to do if the mixed numbers have uncommon denominators.
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Simplifying Rational Expressions (Old Video)
Here is a quick look at how one could simplify a monomial expression involving division. Sal works on a problem and briefly explains his process. Great as a concept review.
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Compound Inequalities 2, Linear Inequalities, Algebra I
Practice solving compound inequalities by isolating an unknown variable. This is the second video in a series of four focused on solving compound inequalities.
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CAHSEE Practice: Problems 35-37
A few geometric problems test your students' knowledge of area and volume in questions 35-37 of the practice CAHSEE. Sal goes through the strategies and hints for solving the problems with helpful narration and colorful annotation, which...
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CAHSEE Practice: Problems 17-19
Taking students through problems 17-19 in this practice CAHSEE, the speaker illustrates how to solve problems involving reading data from tables, probability, and scatterplots. The speaker models careful question-reading and the...
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Finding the Greatest Common Factor of Two Monomials, Algebra I
Sal explains that the most significant common factor of any number is the largest number divisible into both monomials and not necessarily the number with the most significant value. He breaks down two numbers into their prime factors as...
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CAHSEE Practice: Problems 13-14
Probability and pie charts are the topics of problems 13-14 in this practice CAHSEE video, in which the speaker takes test review students through the work necessary to solve these problems. A teacher could present the video to a class...
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Example 1: Factoring a Difference of Squares with Two Variables, Algebra II
Practice is an important learning tool. This practice problem allows students to apply their know-how to factoring a binomial with a difference of squares. Sal explains his process briefly, making this video suitable for those already...
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CAHSEE Practice: Problems 52-53
In the final two problems of the CAHSEE practice test, students are guided through algebraic equations involving factoring and reciprocals. This is an excellent resource for students who struggle with multiple-choice questions or...
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Graphical Systems Application Problem, Systems of equations
Sal evaluates a word problem and then solves it by graphing systems of equations. This problem would be significant as a daily challenge, as a concept review, or as a homework assignment. Show this video only after the students have had...
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CAHSEE Practice: Problems 20-22
Reviewing introductory algebra and graphing skills, this video guides students through three practice math problems on the CAHSEE. Seeing the work and thought process behind choosing the correct answer in a multiple-choice question format.
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Law of Large Numbers, Probability and Statistics
Explaining "one of the most intuitive laws in mathematics and in probability theory," Sal begins a discussion on the law of large numbers. He clarifies that it is often misused due to its broad application. Students will appreciate his...
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Permutations
This video is an introduction to permutations. Sal shows two examples, defines the mathematical notation for permutations, and derives a formula for finding a permutation without repetition of choices. He tries to convey an intuitive...
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Probability Density Functions, Probability and Statistics
Beat the weatherman at his own game with this probability video! Sal shows students how to use probability density functions to predict random occurrences (such as rain). Probability problems - and inclement weather - are no match for...
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Poisson Process 1, Probability and Statistics
Sal's lesson begins with a word problem about the number of cars that pass by a certain point at any given time. Using (and explaining) the Poisson Process, Sal outlines the necessary assumptions and "mathematical tools" to solve this...
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Combinations
How many different ways can five people be arranged in any order in three chairs? Sal shows how combinations are different than permutations. He derives the formula for finding the combination without repetition.
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Poisson Process 2, Probability and Statistics
Continuing his discussion of the Poisson Distribution (or Process) from the previous video, Sal takes students through the derivation of the traffic problem he had begun. The math gets gritty in this video as Sal takes out the graphic...
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Term Life Insurance and Death Probability, Finance and Capital Markets
Math and real life converge in this video, which details the process of death probability in terms of life insurance. Although your students are likely years away from considering life insurance, it's beneficial to illustrate probability...
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Dependent Probability Example, Probability and Statistics
Expanding the "unfair coin" problem from the previous video, Sal discusses the concept of dependent probability. Both his annotations and his trusty calculator are essential elements in solving (and understanding) this problem.
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US History Overview 2 - Reconstruction to the Great Depression
Ambitiously spanning American history from 1865 to 1941, this video discusses and clarifies topics such as women's suffrage, the sinking of the Maine, and the development of America as a world empire. Maps and photographs will engage...
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US History Overview 1: Jamestown to the Civil War
Complete with territory maps, photos, and interesting anecdotes, this video covers the major events of American History, roughly from 1754 to 1865. Plymouth and Jamestown are mentioned at the beginning of the video, but the speaker...
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US History Overview 3 - WWII to Vietnam
This video brings viewers up to modern history (1975) after taking them through WWII, the Korean War, the Cuban Missile Crisis, and the Vietnam War. Although the timeline's format may seem straightforward, viewers will be engaged by the...
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Appomattox Court House and Lincoln's Assassination
Did Lincoln know that victory for the Union was imminent? According to this video, which discusses the end of the Civil War (including a great anecdote about a historic coincidence between the beginning and end of the war), many...
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Allende and Pinochet in Chile, The 20th Century, World history
Introducing one of the "darker periods" of both Chilean and U.S. history, the narrator details the 1973 Allende Coup in Chile. The attempted kidnapping/assassination of Rene Schneider is addressed, as is the degree of involvement of the...