Online courses directory (381)

Learn about the cervical (neck) spine through an Xray!. Adequacy of the Lateral Cervical Spine X-Ray. Assessing Alignment of the Lateral Cervical Spine (neck) X-Ray. Cervical Spine Protection in Airway Management (not a substitute for formal training). Adequacy of the Lateral Cervical Spine X-Ray. Assessing Alignment of the Lateral Cervical Spine (neck) X-Ray. Cervical Spine Protection in Airway Management (not a substitute for formal training).

Learn some basics about the Health Care system in the US. Blue Cross and Blue Shield. Conversation About Drug Pricing. Health Care Costs in US vs Europe. Healthcare System Overview. Paying Doctors. Medicare Overview. Blue Cross and Blue Shield. Conversation About Drug Pricing. Health Care Costs in US vs Europe. Healthcare System Overview. Paying Doctors. Medicare Overview.

Enjoy!. Bacterial Meningitis. Ritual of the Bedside Exam. Systemic Thinking About Cancer. Inflammation. Bacterial Meningitis. Ritual of the Bedside Exam. Systemic Thinking About Cancer. Inflammation.

US History Overview 1: Jamestown to the Civil War. US History Overview 2: Reconstruction to the Great Depression. US History Overview 3: WWII to Vietnam. Appomattox Court House and Lincoln's Assassination. Communism. Korean War Overview. Bay of Pigs Invasion. Cuban Missile Crisis. Vietnam War. Pattern of US Cold War Interventions. Allende and Pinochet in Chile. When Capitalism is Great and Not-so-great. 20th Century Capitalism and Regulation in the United States. US History Overview 1: Jamestown to the Civil War. US History Overview 2: Reconstruction to the Great Depression. US History Overview 3: WWII to Vietnam. Appomattox Court House and Lincoln's Assassination. Communism. Korean War Overview. Bay of Pigs Invasion. Cuban Missile Crisis. Vietnam War. Pattern of US Cold War Interventions. Allende and Pinochet in Chile. When Capitalism is Great and Not-so-great. 20th Century Capitalism and Regulation in the United States.

Sumerian Art: Standard of Ur. Ptolemaic: Rosetta Stone. Ancient Rome. Ara Pacis. Sutton Hoo Ship Burial. Charlemagne: An Introduction (1 of 2). Charlemagne and the Carolingian Revival (part 2 of 2). Coronation Mantle. Sumerian Art: Standard of Ur. Ptolemaic: Rosetta Stone. Ancient Rome. Ara Pacis. Sutton Hoo Ship Burial. Charlemagne: An Introduction (1 of 2). Charlemagne and the Carolingian Revival (part 2 of 2). Coronation Mantle.

You cannot properly understand current world events without understanding the history of the 20th Century. This topic takes us on a journey from the end of Imperialism through two world wars and the Cold War and brings us to our modern world. Empires before World War I. German and Italian Empires in 1914. Alliances leading to World War I. Language and religion of the former Yugoslavia. Assassination of Franz Ferdinand by Gavrilo Princip. The Great War begins. Causes of World War I. Blockades, u-boats and sinking of the Lusitania. Zimmermann Telegram. United States enters World War I. Wilson's war message to Congress -- April 2, 1917. 1917 speech by Senator George Norris in opposition to American entry. WWI Blockades and America. Schlieffen Plan and the First Battle of the Marne. Comparing the Eastern and Western Fronts in WWI. World War I Eastern Front. Battles of Verdun, Somme and the Hindenburg Line. Closing stages of World War I. Technology in World War I. Eastern and Western Fronts of World War I. Serbian and Macedonian Fronts. Serbian losses in World War I. Italy backs out of Triple Alliance. Italian front in World War I. Japan in World War I. Secondary fronts of WWI. Theodor Herzl and the birth of political Zionism. Sinai, Palestine and Mesopotamia Campaigns. Sykes-Picot Agreement and the Balfour Declaration. Arabia after World War I. The Middle East during and after WWI. Gallipoli Campaign and ANZAC Day. Sinai, Palestine and Mesopotamia Campaigns. Armenian massacres before World War I. Young Turks and the Armenians. Mustafa Kemal Ataturk and the Turkish War for Independence. Ottoman Empire and birth of Turkey . Deaths in World War I. Woodrow Wilson's Fourteen Points. Paris Peace Conference and Treaty of Versailles. More detail on the Treaty of Versailles and Germany. Arabia after World War I. WWI Aftermath. World War I. Initial rise of Hitler and the Nazis. Hitler's Beer Hall Putsch. Hitler and the Nazis come to power. Night of the Long Knives. Nazi Aggression and Appeasement. Rise of Hitler. Fascism and Mussolini. Mussolini becomes Prime Minister. Mussolini becomes absolute dictator (Il Duce). Mussolini aligns with Hitler. Fascism and Mussolini. Overview of Chinese History 1911 - 1949. Communism. Korean War Overview. Bay of Pigs Invasion. Cuban Missile Crisis. Vietnam War. Allende and Pinochet in Chile. Pattern of US Cold War Interventions. Empires before World War I. German and Italian Empires in 1914. Alliances leading to World War I. Language and religion of the former Yugoslavia. Assassination of Franz Ferdinand by Gavrilo Princip. The Great War begins. Causes of World War I. Blockades, u-boats and sinking of the Lusitania. Zimmermann Telegram. United States enters World War I. Wilson's war message to Congress -- April 2, 1917. 1917 speech by Senator George Norris in opposition to American entry. WWI Blockades and America. Schlieffen Plan and the First Battle of the Marne. Comparing the Eastern and Western Fronts in WWI. World War I Eastern Front. Battles of Verdun, Somme and the Hindenburg Line. Closing stages of World War I. Technology in World War I. Eastern and Western Fronts of World War I. Serbian and Macedonian Fronts. Serbian losses in World War I. Italy backs out of Triple Alliance. Italian front in World War I. Japan in World War I. Secondary fronts of WWI. Theodor Herzl and the birth of political Zionism. Sinai, Palestine and Mesopotamia Campaigns. Sykes-Picot Agreement and the Balfour Declaration. Arabia after World War I. The Middle East during and after WWI. Gallipoli Campaign and ANZAC Day. Sinai, Palestine and Mesopotamia Campaigns. Armenian massacres before World War I. Young Turks and the Armenians. Mustafa Kemal Ataturk and the Turkish War for Independence. Ottoman Empire and birth of Turkey . Deaths in World War I. Woodrow Wilson's Fourteen Points. Paris Peace Conference and Treaty of Versailles. More detail on the Treaty of Versailles and Germany. Arabia after World War I. WWI Aftermath. World War I. Initial rise of Hitler and the Nazis. Hitler's Beer Hall Putsch. Hitler and the Nazis come to power. Night of the Long Knives. Nazi Aggression and Appeasement. Rise of Hitler. Fascism and Mussolini. Mussolini becomes Prime Minister. Mussolini becomes absolute dictator (Il Duce). Mussolini aligns with Hitler. Fascism and Mussolini. Overview of Chinese History 1911 - 1949. Communism. Korean War Overview. Bay of Pigs Invasion. Cuban Missile Crisis. Vietnam War. Allende and Pinochet in Chile. Pattern of US Cold War Interventions.

Relationship between angular velocity and speed. Why Distance is Area under Velocity-Time Line. Introduction to Vectors and Scalars. Calculating Average Velocity or Speed. Solving for Time. Displacement from Time and Velocity Example. Acceleration. Balanced and Unbalanced Forces. Unbalanced Forces and Motion. Newton's First Law of Motion. Newton's First Law of Motion Concepts. Newton's First Law of Motion. Newton's Second Law of Motion. Newton's Third Law of Motion. Airbus A380 Take-off Time. Airbus A380 Take-off Distance. Average Velocity for Constant Acceleration. Acceleration of Aircraft Carrier Takeoff. Race Cars with Constant Speed Around Curve. Introduction to Gravity. Mass and Weight Clarification. Gravity for Astronauts in Orbit. Would a Brick or Feather Fall Faster. Deriving Displacement as a Function of Time, Acceleration and Initial Velocity. Plotting Projectile Displacement, Acceleration, and Velocity. Projectile Height Given Time. Deriving Max Projectile Displacement Given Time. Impact Velocity From Given Height. Visualizing Vectors in 2 Dimensions. Projectile at an Angle. Different Way to Determine Time in Air. Launching and Landing on Different Elevations. Total Displacement for Projectile. Total Final Velocity for Projectile. Correction to Total Final Velocity for Projectile. Projectile on an Incline. Unit Vectors and Engineering Notation. Clearing the Green Monster at Fenway. Green Monster at Fenway Part 2. Optimal angle for a projectile part 1. Optimal angle for a projectile part 2 - Hangtime. Optimal angle for a projectile part 3 - Horizontal distance as a function of angle (and speed). Optimal angle for a projectile part 4 Finding the optimal angle and distance with a bit of calculus. Slow Sock on Lubricon VI. Normal Forces on Lubricon VI. Normal Force and Contact Force. Normal Force in an Elevator. Inclined Plane Force Components. Ice Accelerating Down an Incline. Force of Friction Keeping the Block Stationary. Correction to Force of Friction Keeping the Block Stationary. Force of Friction Keeping Velocity Constant. Intuition on Static and Kinetic Friction Comparisons. Static and Kinetic Friction Example. Introduction to Tension. Introduction to Tension (Part 2). Tension in an accelerating system and pie in the face. Introduction to Momentum. Momentum: Ice skater throws a ball. 2-dimensional momentum problem. 2-dimensional momentum problem (part 2). Introduction to work and energy. Work and Energy (part 2). Conservation of Energy. Work/Energy problem with Friction. Introduction to mechanical advantage. Mechanical Advantage (part 2). Mechanical Advantage (part 3). Center of Mass. Introduction to Torque. Moments. Moments (part 2). Unit Vector Notation. Unit Vector Notation (part 2). Projectile Motion with Ordered Set Notation. Projectile motion (part 1). Projectile motion (part 2). Projectile motion (part 3). Projectile motion (part 4). Projectile motion (part 5). Centripetal Force and Acceleration Intuition. Visual Understanding of Centripetal Acceleration Formula. Calculus proof of centripetal acceleration formula. Loop De Loop Question. Loop De Loop Answer part 1. Loop De Loop Answer part 2. Acceleration Due to Gravity at the Space Station. Space Station Speed in Orbit. Conservation of angular momentum. Introduction to Newton's Law of Gravitation. Gravitation (part 2). Viewing g as the value of Earth's Gravitational Field Near the Surface. Intro to springs and Hooke's Law. Potential energy stored in a spring. Spring potential energy example (mistake in math). Introduction to Harmonic Motion. Harmonic Motion Part 2 (calculus). Harmonic Motion Part 3 (no calculus).

Fluids (part 1). Fluids (part 2). Fluids (part 3). Fluids (part 4). Fluids (part 5). Fluids (part 6). Fluids (part 7). Fluids (part 8). Fluids (part 9). Fluids (part 10). Fluids (part 11). Fluids (part 12). Fluids (part 1). Fluids (part 2). Fluids (part 3). Fluids (part 4). Fluids (part 5). Fluids (part 6). Fluids (part 7). Fluids (part 8). Fluids (part 9). Fluids (part 10). Fluids (part 11). Fluids (part 12).

Thermodynamics (part 1). Thermodynamics (part 2). Thermodynamics (part 3). Thermodynamics (part 4). Thermodynamics (part 5). Macrostates and Microstates. Quasistatic and Reversible Processes. First Law of Thermodynamics/ Internal Energy. More on Internal Energy. Work from Expansion. PV-diagrams and Expansion Work. Proof: U=(3/2)PV or U=(3/2)nRT. Work Done by Isothermic Process. Carnot Cycle and Carnot Engine. Proof: Volume Ratios in a Carnot Cycle. Proof: S (or Entropy) is a valid state variable. Thermodynamic Entropy Definition Clarification. Reconciling Thermodynamic and State Definitions of Entropy. Entropy Intuition. Maxwell's Demon. More on Entropy. Efficiency of a Carnot Engine. Carnot Efficiency 2: Reversing the Cycle. Carnot Efficiency 3: Proving that it is the most efficient. Enthalpy. Heat of Formation. Hess's Law and Reaction Enthalpy Change. Gibbs Free Energy and Spontaneity. Gibbs Free Energy Example. More rigorous Gibbs Free Energy/ Spontaneity Relationship. A look at a seductive but wrong Gibbs/Spontaneity Proof. Stoichiometry Example Problem 1. Stoichiometry Example Problem 2. Limiting Reactant Example Problem 1. Empirical and Molecular Formulas from Stoichiometry. Example of Finding Reactant Empirical Formula. Stoichiometry of a Reaction in Solution. Another Stoichiometry Example in a Solution. Molecular and Empirical Forumlas from Percent Composition. Hess's Law Example. Thermodynamics (part 1). Thermodynamics (part 2). Thermodynamics (part 3). Thermodynamics (part 4). Thermodynamics (part 5). Macrostates and Microstates. Quasistatic and Reversible Processes. First Law of Thermodynamics/ Internal Energy. More on Internal Energy. Work from Expansion. PV-diagrams and Expansion Work. Proof: U=(3/2)PV or U=(3/2)nRT. Work Done by Isothermic Process. Carnot Cycle and Carnot Engine. Proof: Volume Ratios in a Carnot Cycle. Proof: S (or Entropy) is a valid state variable. Thermodynamic Entropy Definition Clarification. Reconciling Thermodynamic and State Definitions of Entropy. Entropy Intuition. Maxwell's Demon. More on Entropy. Efficiency of a Carnot Engine. Carnot Efficiency 2: Reversing the Cycle. Carnot Efficiency 3: Proving that it is the most efficient. Enthalpy. Heat of Formation. Hess's Law and Reaction Enthalpy Change. Gibbs Free Energy and Spontaneity. Gibbs Free Energy Example. More rigorous Gibbs Free Energy/ Spontaneity Relationship. A look at a seductive but wrong Gibbs/Spontaneity Proof. Stoichiometry Example Problem 1. Stoichiometry Example Problem 2. Limiting Reactant Example Problem 1. Empirical and Molecular Formulas from Stoichiometry. Example of Finding Reactant Empirical Formula. Stoichiometry of a Reaction in Solution. Another Stoichiometry Example in a Solution. Molecular and Empirical Forumlas from Percent Composition. Hess's Law Example.

Electrostatics (part 1): Introduction to Charge and Coulomb's Law. Electrostatics (part 2). Proof (Advanced): Field from infinite plate (part 1). Proof (Advanced): Field from infinite plate (part 2). Electric Potential Energy. Electric Potential Energy (part 2-- involves calculus). Voltage. Capacitance. Circuits (part 1). Circuits (part 2). Circuits (part 3). Circuits (part 4). Cross product 1. Cross Product 2. Cross Product and Torque. Introduction to Magnetism. Magnetism 2. Magnetism 3. Magnetism 4. Magnetism 5. Magnetism 6: Magnetic field due to current. Magnetism 7. Magnetism 8. Magnetism 9: Electric Motors. Magnetism 10: Electric Motors. Magnetism 11: Electric Motors. Magnetism 12: Induced Current in a Wire. The dot product. Dot vs. Cross Product. Calculating dot and cross products with unit vector notation. Electrostatics (part 1): Introduction to Charge and Coulomb's Law. Electrostatics (part 2). Proof (Advanced): Field from infinite plate (part 1). Proof (Advanced): Field from infinite plate (part 2). Electric Potential Energy. Electric Potential Energy (part 2-- involves calculus). Voltage. Capacitance. Circuits (part 1). Circuits (part 2). Circuits (part 3). Circuits (part 4). Cross product 1. Cross Product 2. Cross Product and Torque. Introduction to Magnetism. Magnetism 2. Magnetism 3. Magnetism 4. Magnetism 5. Magnetism 6: Magnetic field due to current. Magnetism 7. Magnetism 8. Magnetism 9: Electric Motors. Magnetism 10: Electric Motors. Magnetism 11: Electric Motors. Magnetism 12: Induced Current in a Wire. The dot product. Dot vs. Cross Product. Calculating dot and cross products with unit vector notation.

Introduction to Waves. Amplitude, Period, Frequency and Wavelength of Periodic Waves. Introduction to the Doppler Effect. Doppler effect formula when source is moving away. When the source and the wave move at the same velocity. Mach Numbers. Specular and Diffuse Reflection. Specular and Diffuse Reflection 2. Refraction and Snell's Law. Refraction in Water. Snell's Law Example 1. Snell's Law Example 2. Total Internal Reflection. Virtual Image. Parabolic Mirrors and Real Images. Parabolic Mirrors 2. Convex Parabolic Mirrors. Convex Lenses. Convex Lens Examples. Doppler effect formula for observed frequency. Concave Lenses. Object Image and Focal Distance Relationship (Proof of Formula). Object Image Height and Distance Relationship. Introduction to Waves. Amplitude, Period, Frequency and Wavelength of Periodic Waves. Introduction to the Doppler Effect. Doppler effect formula when source is moving away. When the source and the wave move at the same velocity. Mach Numbers. Specular and Diffuse Reflection. Specular and Diffuse Reflection 2. Refraction and Snell's Law. Refraction in Water. Snell's Law Example 1. Snell's Law Example 2. Total Internal Reflection. Virtual Image. Parabolic Mirrors and Real Images. Parabolic Mirrors 2. Convex Parabolic Mirrors. Convex Lenses. Convex Lens Examples. Doppler effect formula for observed frequency. Concave Lenses. Object Image and Focal Distance Relationship (Proof of Formula). Object Image Height and Distance Relationship.

This project is a low cost robot made from every day items that are taken apart and described in the reverse engineering section. 1. Bit-zee. 2. Bit-zee (long version). 3. Bit-zee Bot Introduction. 4. Bit-zee planning and propulsion. 5. Bit-zee's bits. 6. Bit-zee's chassis/frame. 7. Bit-zee's wheel mounts and fenders. 8. Bit-zee's component mounting holes. 9. Bit-zee's batteries. 10. Improving the battery wires. 11. Connecting Bit-zee's power wires and on-off switch. 12. Bit-zee's motors. 13. Why does Bit-zee need a motor controller?. 14. Bit-zee's motor controller. 15. Attaching and wiring Bit-zee's motor controller. 16. Attaching Bit-zee's Arduino. 17. How to hotwire a digital camera. 18. Attaching Bit-zee's digital camera. 19. Bit zee's 5 Volt power distribution board. 20. Hacking and attaching a digital recorder/player to Bit-zee. 21. Making a power connector for the Arduino. 22. Attaching Bit-zee's prototype board. 23. Connecting the motor controller to the Arduino. 24. Connecting Bit-zee's camera to the Arduino. 25. Bit-zee's bumper switches. 26. Bit-zee's eyes. 27. Bit-zee's IR sensor. 28. Bit-zee's shell. 29. Camera wiring update.

Videos exploring the way things work. These videos have recently been updated to include 1080p HD versions. What is inside an alarm clock radio?. What is inside a hair dryer? (1 of 2). What is inside a hair dryer? (2 of 2). What is inside a digital camera? (1 of 2). What is inside a digital camera? (2 of 2). What is inside a coffee maker?. What is inside a DVD player? (1 of 5). What is inside a DVD player? (2 of 5). What is inside a DVD player? (3 of 5). What is inside a DVD player? (4 of 5). What is inside a DVD player? (5 of 5). What is inside a universal remote control?. What is inside a tap light?.

This topic focuses on how to design and create products that solve real problems and bring academic content to life. Ping pong ball launcher introduction. Build a ping pong ball launcher . Update and modify your ping pong ball launcher.

Thermo Can.

In this section we investigate how dc motors work and what is inside of them. Brushed DC motor explained. Build your own motor. Compare the hair dryer motor to the one you can build.

Videos about how government works in the United States. PPACA or "Obamacare". The Fiscal Cliff. More Fiscal Cliff Analysis. Electoral College. Primaries and Caucuses. Deficit and Debt Ceiling. Government's Financial Condition. Social Security Intro. FICA Tax. Medicare Sustainability. SOPA and PIPA. Pension obligations. Illinois pension obligations. PPACA or "Obamacare". The Fiscal Cliff. More Fiscal Cliff Analysis. Electoral College. Primaries and Caucuses. Deficit and Debt Ceiling. Government's Financial Condition. Social Security Intro. FICA Tax. Medicare Sustainability. SOPA and PIPA. Pension obligations. Illinois pension obligations.

Videos on how banks work and how money is created. Banking 1. Banking 2: A bank's income statement. Banking 3: Fractional Reserve Banking. Banking 4: Multiplier effect and the money supply. Banking 5: Introduction to Bank Notes. Banking 6: Bank Notes and Checks. Banking 7: Giving out loans without giving out gold. Banking 8: Reserve Ratios. Banking 9: More on Reserve Ratios (Bad sound). Banking 10: Introduction to leverage (bad sound). Banking 11: A reserve bank. Banking 12: Treasuries (government debt). Banking 13: Open Market Operations. Banking 14: Fed Funds Rate. Banking 15: More on the Fed Funds Rate. Banking 16: Why target rates vs. money supply. Banking 17: What happened to the gold?. Banking 18: Big Picture Discussion. The Discount Rate. Repurchase Agreements (Repo transactions). Federal Reserve Balance Sheet. Fractional Reserve Banking Commentary 1. FRB Commentary 2: Deposit Insurance. FRB Commentary 3: Big Picture. LIBOR.

Random logic puzzles and brain teasers. Fun to do and useful for many job interviews!. Liar Truth-teller Brain Teaser. Toggler Brain Teaser. Alien Abduction Brain Teaser. Blue Forehead Room Brain Teaser. Blue Forehead Room Solution. Forehead Numbers Brain Teaser. Light Bulb Switching Brain Teaser. Path Counting Brain Teaser. 3-D Path Counting Brain Teaser. Liar Truth-teller Brain Teaser. Toggler Brain Teaser. Alien Abduction Brain Teaser. Blue Forehead Room Brain Teaser. Blue Forehead Room Solution. Forehead Numbers Brain Teaser. Light Bulb Switching Brain Teaser. Path Counting Brain Teaser. 3-D Path Counting Brain Teaser.

Sal working through the 53 problems from the practice test available at http://www.cde.ca.gov/ta/tg/hs/documents/mathpractest.pdf for the CAHSEE (California High School Exit Examination). Clearly useful if you're looking to take that exam. Probably still useful if you want to make sure you have a solid understanding of basic high school math. CAHSEE Practice: Problems 1-3. CAHSEE Practice: Problems 4-9. CAHSEE Practice: Problems 10-12. CAHSEE Practice: Problems 13-14. CAHSEE Practice: Problems 15-16. CAHSEE Practice: Problems 17-19. CAHSEE Practice: Problems 20-22. CAHSEE Practice: Problems 23-27. CAHSEE Practice: Problems 28-31. CAHSEE Practice: Problems 32-34. CAHSEE Practice: Problems 35-37. CAHSEE Practice: Problems 38-42. CAHSEE Practice: Problems 43-46. CAHSEE Practice: Problems 47-51. CAHSEE Practice: Problems 52-53. CAHSEE Practice: Problems 1-3. CAHSEE Practice: Problems 4-9. CAHSEE Practice: Problems 10-12. CAHSEE Practice: Problems 13-14. CAHSEE Practice: Problems 15-16. CAHSEE Practice: Problems 17-19. CAHSEE Practice: Problems 20-22. CAHSEE Practice: Problems 23-27. CAHSEE Practice: Problems 28-31. CAHSEE Practice: Problems 32-34. CAHSEE Practice: Problems 35-37. CAHSEE Practice: Problems 38-42. CAHSEE Practice: Problems 43-46. CAHSEE Practice: Problems 47-51. CAHSEE Practice: Problems 52-53.