Khan Academy
The Lungs and Pulmonary System, Health and Medicine
The oxygen needed by our bodies to burn during respiration of glucose is obtained by ventilation. The anatomical structures involved in gaseous exchange are drawn and labeled. The explanations are excellent for a review or a student with...
Khan Academy
Circulatory System and the Heart, Human Anatomy and Physiology, Health and Medicine
Watch as the Khan Academy explains why red blood cells are efficient carriers of hemoglobin and explains the difference between pulmonary arteries and veins. This thorough video, complete with excellent explanations and diagrams, will...
Khan Academy
The Kidney and Nephron, Renal System Physiology, NCLEX-RN
Sal from Khan Academy shows your class a kidney on his Smart Board and writes down the main functions of the kidneys and nephrons. The different parts are highlighted and explained in detail. Continue to review the kidneys and nephrons...
Khan Academy
Anatomy of a Neuron, Human Anatomy and Physiology, Health & Medicine
Various colors are used on the black background of a Smart Board to compose a drawing of a neuron cell and all its parts, while the anatomy of a neuron is described. The function of a neuron is also explained in detail. Show it to your...
Khan Academy
Comparing Decimals Example 3, Decimals, Pre-Algebra
Use this video to show older elementary mathematicians that they can compare numbers using the same thinking that they did when they were in the first grade. Sal compares decimal numbers using the greater than and less than symbols. He...
Khan Academy
Express a Small Number in Scientific Notation (Example), Pre-Algebra
Scientific notation is defined and used to express the number 0.0000000003457. This concept is not as clearly defined as it could be, and is probably not suitable for those who have not had prior experience with the concept.
Khan Academy
Adding Fractions with Different Signs, Fractions, Pre-Algebra
Bring interest to your lesson on adding fractions with different signs by using this Khan Academy video. Sal employs a number line to explain how he adds multiple fractions with different signs. This resource could be used as an...
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
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.
Khan Academy
One-Step Inequality Involving Addition, Linear Inequalities, Algebra I
Practice problems are great ways to engage your charges with a new concept. Sal solves for x + 8 less than or equal to six and then graphs the solution. First, he subtracts eight from both sides, and then he subtracts six. Next, he draws...
Khan Academy
Decimals and Fractions on a Number Line, Decimals, Pre-Algebra
Using a number line can provide students with a concrete representation of the value various numbers hold. Sal plots six different numbers on a number line. He includes whole, decimal, and negative numbers.
Khan Academy
Multi-Step Inequalities, Linear Inequalities, Algebra I
Complete an algebra lesson with this video on evaluating and solving multi-step inequalities. Sal Khan completes several practice problems, explaining his process while exemplifying strong teaching skills. Each problem is different and...
Khan Academy
Example of Plotting a Simple Inequality on a Number Line, Pre-Algebra
Graphs are excellent tools for visualizing data. Use this video to demonstrate what inequalities look like on a number line. Sal draws a number line and shows the inequality. He effectively employs differentiated colors to express the...
Khan Academy
Solving a Proportion with an Unknown Variable (Example)
There are many ways to solve a proportion. In this presentation, Sal goes over all of them. He demonstrates several methods for solving a proportion. He goes through every necessary step and explains the entire process. This would be...
Khan Academy
Unit Conversion: Gallons to Quarts, Pints, and Cups, Pre-Algebra
Provide your students with the context and information they'll need to convert gallons to quarts, pints, and cups. In this video, Sal defines gallons, quarts, pints, and cups. Then he uses this information to solve a problem where he...
Khan Academy
Representing a Number as a Decimal, Percent, and Fraction 2, Decimals, Pre-Algebra
There are two Khan Academy videos on representing numbers as decimals, percents, and fractions. This one shows students how to represent a fraction as a decimal and a percent. Sal demonstrates the process used to convert the fraction 7/8...
Khan Academy
Comparing Fractions with Different Denominators, Fractions, Pre-Algebra
Sal compares two fractions containing uncommon denominators. He analyzes both fractions using prime factorization. Note: This video may be confusing for learners who struggle or are new to the concept. It would be best used for...
Khan Academy
Decimal Place Value, Decimals, Pre-Algebra
Having a good number sense is key to understanding place value. This video clearly explains the place values that comprise a decimal number. It is a very straightforward presentation and would be appropriate for grades three, four, or...
Khan Academy
Multiplying Fractions Word Problem: Banana Oat Muffin Recipe, Pre-Algebra
Word problems are a great way to help learners visualize and understand why fractions are so important. Sal determines what fraction of 3/4 cup of oats he will need if he is making 1/2 a recipe. He uses drawings to demonstrate why one...
Khan Academy
Example 3: Subtracting Polynomials, Algebra I
To subtract two polynomials, Sal demonstrates that you add the opposite of the second term, and then combine like terms to solve. How do you find an opposite term? Multiply the polynomial by -1. This video is very clearly explained and...
Khan Academy
SAT Prep: Test 6 Section 3 Part 4
The strength of this video lies in Sal's ability to immediately translate word problems to equations - a skill that might allow many SAT takers to have a better chance at finding the correct answer. If students watch him practice this...
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...