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How To: Use electrophilic aromatic substitution in chemistry

In this free video science lesson from Internet pedagogical superstar Salman Khan, you'll learn how to use electrophilic aromatic substitution in chemistry. Whether you need help studying for that next big test or could just use a hand finishing your homework, you're sure to be well served by this video lesson. For more information, including detailed, step-by-step instructions, take a look.

How To: Use Hess's law in physical chemistry

In this free video science lesson from Internet pedagogical superstar Salman Khan, we learn how to use Hess's law. Whether you need help studying for that next big test or could just use a hand finishing your homework, you're sure to be well served by this video lesson. For more information, including detailed, step-by-step instructions, take a look.

How To: Add depth to an animation in Adobe Flash Professional CS5

This clip presents a guide to adding the final, finishing touches to an animation created within Adobe Flash Professional CS5. Whether you're new to Adobe Flash or merely unfamiliar with Flash Professional CS5, you're sure to benefit from this free video software tutorial from Lynda. For more information, including detailed, step-by-step instructions, take a look.

How To: Differentiate between Celsius and Fahrenheit temperature scales

In this free video science lesson from Internet pedagogical superstar Salman Khan, you'll learn how to differentiate between Celsius and Fahrenheit scales, identifying the freezing and boilings points of each. Whether you need help studying for that next big test or could just use a hand finishing your homework, you're sure to be well served by this video lesson. For more information, including detailed, step-by-step instructions, take a look.

How To: Solve SN1 & SN2 reaction problems that involve solvents in organic chemistry

In this free video science lesson from Internet pedagogical superstar Salman Khan, you'll learn how to undertstand the effects of solvents on SN1 and SN2 reactions. Whether you need help studying for that next big test or could just use a hand finishing your homework, you're sure to be well served by this video lesson. For more information, including detailed, step-by-step instructions, take a look.

How To: Visualize a cyclohexane molecule with chair & boat shapes in organic chemistry

In this free video science lesson from Internet pedagogical superstar Salman Khan, you'll learn how to represent and interpret cyclohexane molecules in organic chemistry. Whether you need help studying for that next big test or could just use a hand finishing your homework, you're sure to be well served by this video lesson. For more information, including detailed, step-by-step instructions, take a look.

How To: Work with stereoisomers, enantiomers and diastereomers in organic chemistry

In this free video science lesson from Internet pedagogical superstar Salman Khan, you'll learn how to work with stereoisomers, enantiomers, diastereomers, constitutional isomers and meso compounds in organic chemistry. Whether you need help studying for that next big test or could just use a hand finishing your homework, you're sure to be well served by this video lesson. For more information, including detailed, step-by-step instructions, take a look.

How To: Work with reaction mechanisms in organic chemistry

This free video science lesson from Internet pedagogical superstar Salman Khan presents a general introduction to the concept of reaction mechanisms in organic chemistry. Whether you need help studying for that next big test or could just use a hand finishing your homework, you're sure to be well served by this video lesson. For more information, including detailed, step-by-step instructions, take a look.

How To: Use Markovnikov's rule with carbocations in organic chemistry

In this free video science lesson from Internet pedagogical superstar Salman Khan, you'll learn how to apply Markovnikov's rule to solve carbocation problems in organic chemistry. Whether you need help studying for that next big ochem test or could just use a hand finishing your homework, you're sure to be well served by this video lesson. For more information, including detailed, step-by-step instructions, take a look.

How To: Determine the empirical and molecular formulas for a compound in chemistry

In this free video science lesson from Internet pedagogical superstar Salman Khan, you'll learn how to determine the empircal and molecular formulas of a substance given percent composition. Whether you need help studying for that next big test or could just use a hand finishing your homework, you're sure to be well served by this video lesson. For more information, including detailed, step-by-step instructions, take a look.

How To: Deal with SN2 (biomolecular nucleophilic substitution) reactions in chemistry

In this free video science lesson from Internet pedagogical superstar Salman Khan, you'll learn how to understand and work with SN2 reactions in organic chemistry. Whether you need help studying for that next big test or could just use a hand finishing your homework, you're sure to be well served by this video lesson. For more information, including detailed, step-by-step instructions, take a look.

How To: Work with steric hindrance in organic chemistry

In this free video science lesson from Internet pedagogical superstar Salman Khan, you'll learn how to use Markovnikov's rule to understand steric hindrance in organic chemistry. Whether you need help studying for that next big test or could just use a hand finishing your homework, you're sure to be well served by this video lesson. For more information, including detailed, step-by-step instructions, take a look.

How To: Work with SN2 reactions in stereochemistry

In this free video science lesson from Internet pedagogical superstar Salman Khan, you'll learn how to handle SN2 substitution reactions in stereochemistry. Whether you need help studying for that next big test or could just use a hand finishing your homework, you're sure to be well served by this video lesson. For more information, including detailed, step-by-step instructions, take a look.

How To: Polymerize an alkenes with an acid in organic chemistry

In this free video science lesson from Internet pedagogical superstar Salman Khan, you'll learn how to handle the polymerization of an alkene with an acid in organic chemistry. Whether you need help studying for that next big test or could just use a hand finishing your homework, you're sure to be well served by this video lesson. For more information, including detailed, step-by-step instructions, take a look.

How To: Work with reaction mechanisms in organic chemistry

In this free video science lesson from Internet pedagogical superstar Salman Khan, you'll learn how to handle reaction mechanisms in organic chemistry. Whether you need help studying for that next big test or could just use a hand finishing your homework, you're sure to be well served by this video lesson. For more information, including detailed, step-by-step instructions, take a look.

How To: Work with hybridized orbitals and sigma bonds in organic chemistry

In this free video science lesson from Internet pedagogical superstar Salman Khan, you'll learn what to do with hybridized orbitals and sigma bonds in organic chemistry. Whether you need help studying for that next big test or could just use a hand finishing your homework, you're sure to be well served by this video lesson. For more information, including detailed, step-by-step instructions, take a look.

How To: Create a double Newman diagram for methcyclohexane in organic chemistry

In this free video science lesson from Internet pedagogical superstar Salman Khan, you'll learn how to create a double Newman diagram for methcyclohexane. Whether you need help studying for that next big test or could just use a hand finishing your homework, you're sure to be well served by this video lesson. For more information, including detailed, step-by-step instructions, take a look.

How To: Use Markovnikov's rule to determine the likelihood of an addition reaction

In this free video science lesson from Internet pedagogical superstar Salman Khan, you'll learn how to use Markovnikov's rule to figure out which addition reaction is most likely in organic chemistry. Whether you need help studying for that next big test or could just use a hand finishing your homework, you're sure to be well served by this video lesson. For more information, including detailed, step-by-step instructions, take a look.

How To: Represent the structure of a molecule in organic chemistry

Need some help figuring out how to represent an organic molecule? You're in luck: In this free video science lesson from Internet pedagogical superstar Salman Khan, you'll learn how to just that. Whether you need help studying for that next big test or could just use a hand finishing your homework, you're sure to be well served by this video lesson. For more information, including detailed, step-by-step instructions, take a look.

How To: Use the Entgegen-Zusammen naming scheme for alkenes in organic chemistry

What's in a name? Well, your chemistry grade, for one. In this free video science lesson from Internet pedagogical superstar Salman Khan, you'll learn how to .... Whether you need help studying for that next big test or could just use a hand finishing your homework, you're sure to be well served by this video lesson. For more information, including detailed, step-by-step instructions, take a look.

How To: Build a couch with Legos

What's a house model if you don't have a couch in the living room, right? Where would the minifigures sit to watch TV? Can't be on the floor! In this video you will get a quick glimpse of the different bricks that you will need to complete the model as well as a detailed tutorial on the construction process all the way into a finished couch!

How To: Decorate the perfect 50th anniversary cake

This cake is the perfect way to celebrate the love and commitment that is involved in fifty long years of marriage. A 50th anniversary is a huge event and only the most beautiful cake will do. In this clip, learn to make a cake from start to finish. Save all the money you would pay a bakery and add a personal touch to your celebration. Enjoy!

How To: Find the equation for a growth pattern

From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to find an equation that describse the growth pattern of a sequence of blocks.

How To: Use vertex formula to find the vertex of a parabola

Looking for a guide on how to find the vertex of a parabola using the vertex formula? Learn how with this free video algebra lesson. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test).

How To: Reduce a fraction to its lowest terms in basic math

Want to reduce a fraction to its lowest terms? It's easy. See how it's done with this free video math lesson. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test).

How To: Solve an algebraic expression with given variables

Need help figuring out how to solve an equation with given variables in algebra? Learn how with this free video math lesson. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test).

How To: Evaluate a telescoping series using partial fractions

Looking for a primer on how to solve a telescoping series using partial fractions? See how it's done with this free video college algebra lesson. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test).

How To: Use derivatives in calculus

Learn how to find derivatives in calculus with this free video math lesson. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test).

How To: Graph using derivatives in calculus

See how to create a graph for a derivative in calculus. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test). With this installment from Internet pedagogical superstar Salman Khan's series of free math tutorials, you'll learn how to graph derivatives in calculus.

How To: Solve quadratic equations with the quadratic formula

See how to use the quadratic formula to solve quadratic equations with this free video algebra lesson. Solving quadratic equations is a cinch once you know the proper method to tackle them. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test).

How To: Factor quadratic expressions using trial and error

Sometimes there's no better way to factor a quadratic equation than by simple brute-force trial and error. Watch this free video algebra lesson to see how it's done. From Ramanujan to calculus co-creator Gottfried Leibniz, many of the world's best and brightest mathematical minds have belonged to autodidacts. And, thanks to the Internet, it's easier than ever to follow in their footsteps (or just finish your homework or study for that next big test).