Khan Academy
Khan Academy: Geometry: Congruent and Similar Triangles
Explains how to determine if triangles are congruent or similar. [3:53]
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Level 2 Exponents
This video explains the meaning of negative exponents. Practice problems are available. [6:26]
Khan Academy
Khan Academy: Algebra: Ca Algebra 1: Systems of Inequalities
This video demonstrates how to solve several test questions related to systems of equations and systems of inequalities. [12:56]
Khan Academy
Khan Academy: Chemistry: Valence Electrons
Using information about electron configuration to determine elements react with other elements. [15:23]
Khan Academy
Khan Academy: Trigonometry: Trigonometry Word Problems (Part 1)
Video containing the beginning of a solution to a navigation problem that uses trigonometry to find the missing length of a triangle. [9:57]
Khan Academy
Khan Academy: Arithmetic and Pre Algebra: Level 2 Addition
A video explaining addition of a two-digit number and a one-digit number using the addition algorithm, objects and number lines. Practice problems are available. [9:47]
Khan Academy
Khan Academy: Algebra: Graphing a Basic Function
Video showing how to graph a linear function by evaluating the function for different values of x and plotting the resulting points. [5:36]
Khan Academy
Khan Academy: Chemistry: Introduction to P H, P Oh, and P Kw
A description of the autoionization of water. [18:09]
Khan Academy
Khan Academy: Algebra: Algebra: Graphing Lines 1
This video demonstrates how to make a table of x and y values in order to graph the equation of a line. [9:50]
Khan Academy
Khan Academy: Probability: Probability (Part 1)
Video lesson introducing probability by exploring different understandings of probability and solving for the probability of simple events. Includes link to additional practice problems. [10:30]
Khan Academy
Khan Academy: Geometry: 30 60 90 Triangles Ii
In this video tutorial, the instructor demostrates how to apply the special relationship between the legs and hypotenuse of a 30-60-90 triangle. Solves two different example problems using the relationship. Practice problems available....
Khan Academy
Khan Academy: Cell Membrane Introduction
Learn about how phospholipids form the cell membrane, and what types of molecules can passively diffuse through the membrane. [8:52]
Khan Academy
Khan Academy: Cell Membrane Proteins
This Khan Academy tutorial will enrich study on the different types of proteins that exist on the cell membrane. [8:11]
Khan Academy
Khan Academy: Cerebral Blood Supply Part 1
Identify the significant arteries in the brain that bring necessary oxygen to all parts of the brain with the help of this Khan Academy video. [10:20]
Khan Academy
Khan Academy: Treatment of Stroke With Interventions
What interventions can be made in treating a stroke? Khan Academy answers this question. [7:10]
Khan Academy
Khan Academy: Circulatory System and the Heart
Sal Khan introduces the circulatory system function and the structure and function of the heart. [14:53]
Khan Academy
Khan Academy: Post Stroke Inflammation
Is post-stroke inflammation common? Khan Academy fills us in with what it is and why it occurs. [5:55]
Khan Academy
Khan Academy: B Lymphocytes (B Cells)
Overview of B cells (B lymphocytes) and how they are activated and produce antibodies. [14:08]
Khan Academy
Khan Academy: How Earth's Tilt Causes Seasons
Sal explains how the seasons are caused by the tilt of the Earth. [20:42]
Khan Academy
Khan Academy: Algebra: Parallel Lines
This video demonstrates how to determine if lines are parallel given the equations. There are three equations listed and the lines that are parallel will contain the same slope. Practice problems available. [3:48]
Khan Academy
Khan Academy: Algebra: Parallel Lines 2
This video demonstrates how to determine if lines are parallel given the equations. There are three equations listed but they are not all in slope-intercept form. Practice problems available. [3:03]
Khan Academy
Khan Academy: Trigonometry: Trigonometry Word Problems (Part 2)
Video continues and completes the solution to a navigation problem that uses trigonometry to find the missing length of a triangle. [2:51]
Khan Academy
Khan Academy: Algebra: Exponent Properties 5
Video lesson introducing the power of a product rule and using it to simplify an algebraic expression. [2:50]
Khan Academy
Khan Academy: Biology: Hardy Weinberg Principle
A detailed explanation of the Hardy-Weinberg Principle of genetic equilibrium. [14:57]