Online courses directory (381)

Understanding and finding factors and multiples. After these videos, you'll be ready for fractions. Divisibility Tests for 2, 3, 4, 5, 6, 9, 10. Recognizing Divisibility. The Why of the 3 Divisibility Rule. The Why of the 9 Divisibility Rule. Divisibility tests. Finding Factors of a Number. Finding factors and multiples. Divisibility 0.5. Divisibility Intuition. Divisibility intuition. Prime Numbers. Recognizing Prime Numbers. Prime numbers. Composite numbers. Prime Factorization. Prime factorization exercise. Prime factorization. The fundamental theorem of arithmetic. The fundamental theorem of arithmetic. Common Divisibility Examples. Divisibility. Least common multiple exercise. Least common multiple exercise 2. Least Common Multiple (LCM). Old Least Common Multiple. Least common multiple. Greatest common divisor factor exercise. Greatest Common Divisor. Greatest common divisor. LCM and GCF (greatest common factor) word problems. LCM and GCD word problems. Divisibility Tests for 2, 3, 4, 5, 6, 9, 10. Recognizing Divisibility. The Why of the 3 Divisibility Rule. The Why of the 9 Divisibility Rule. Divisibility tests. Finding Factors of a Number. Finding factors and multiples. Divisibility 0.5. Divisibility Intuition. Divisibility intuition. Prime Numbers. Recognizing Prime Numbers. Prime numbers. Composite numbers. Prime Factorization. Prime factorization exercise. Prime factorization. The fundamental theorem of arithmetic. The fundamental theorem of arithmetic. Common Divisibility Examples. Divisibility. Least common multiple exercise. Least common multiple exercise 2. Least Common Multiple (LCM). Old Least Common Multiple. Least common multiple. Greatest common divisor factor exercise. Greatest Common Divisor. Greatest common divisor. LCM and GCF (greatest common factor) word problems. LCM and GCD word problems.

Learn how the sympathetic and parasympathetic nerves regulate your heart in so many different ways!. Changing the AV Node Delay - Chronotropic Effect. Changing the Heart Rate - Chronotropic Effect. Increasing Ventricular Contractility - Inotropic effect. Autonomic Nervous System Effects on the Heart. Getting a New Heart. Changing the AV Node Delay - Chronotropic Effect. Changing the Heart Rate - Chronotropic Effect. Increasing Ventricular Contractility - Inotropic effect. Autonomic Nervous System Effects on the Heart. Getting a New Heart.

SAT prep: test 1 section3 part 1. SAT Prep: Test 1 Section 3 Part 2. SAT Prep: Test 1 Section 3 Part 3. SAT Prep: Test 1 Section 3 Part 4. SAT Prep: Test 1 Section 3 Part 5. SAT Prep: Test 1 Section 3 Part 6. SAT Prep: Test 1 Section 3 Part 7. SAT Prep: Test 1 Section 3 Part 8. SAT Prep: Test 1 Section 6 Part 1. SAT Prep: Test 1 Section 6 Part 2. SAT Prep: Test 1 Section 6 Part 3. SAT Prep: Test 1 Section 6 Part 4. SAT Prep: Test 1 Section 6 Part 5. SAT Prep: Test 1 Section 6 Part 6. SAT Prep: Test 1 Section 9 Part 1. SAT Prep: Test 1 Section 9 Part 2. SAT Prep: Test 1 Section 9 Part 3. SAT Prep: Test 1 Section 9 Part 4. SAT Prep: Test 1 Section 9 Part 5. SAT Prep: Test 2 Section 3 part 1. SAT Prep: Test 2 Section 3 Part 2. SAT Prep: Test 2 Section 3 Part 3. SAT Prep: Test 2 Section 3 Part 4. SAT Prep: Test 2 Section 3 Part 5. SAT Prep: Test 2 Section 3 Part 6. SAT Prep: Test 2 Section 6 Part 1. SAT Prep: Test 2 Section 6 Part 2. SAT Prep: Test 2 Section 6 Part 3. SAT Prep: Test 2 Section 6 Part 4. SAT Prep: Test 2 Section 6 Part 5. SAT Prep: Test 2 Section 6 Part 6. SAT Prep: Test 2 Section 9 Part 1. SAT Prep: Test 2 Section 9 Part 2. SAT Prep: Test 2 Section 9 Part 3. SAT Prep: Test 2 Section 9 Part 4. SAT Prep: Test 3 Section 2 Part 1. SAT Prep: Test 3 Section 2 Part 2. SAT Prep: Test 3 Section 2 Part 3. SAT Prep: Test 3 Section 2 Part 4. Test 3 Section 2 Part 5. SAT Prep: Test 3 Section 4 Part 1. SAT Prep: Test 3 Section 4 Part 2. SAT Prep: Test 3 Section 4 Part 3. SAT Prep: Test 3 Section 4 Part 4. SAT Prep: Test 3 Section 4 Part 5. SAT Prep: Test 3 Section 8 Part 1. SAT Prep: Test 3 Section 8 Part 2. SAT Prep: Test 3 Section 8 Part 3. SAT Prep: Test 3 Section 8 Part 4. SAT Prep: Test 4 Section 2 Part 1. SAT Prep: Test 4 Section 2 Part 2. SAT Prep: Test 4 Section 2 Part 3. SAT Prep: Test 4 Section 2 Part 4. SAT Prep: Test 4 Section 2 Part 5. SAT Prep: Test 4 Section 2 Part 6. SAT Prep: Test 4 Section 4 Part 1. SAT Prep: Test 4 Section 4 Part 2. SAT Prep: Test 4 Section 4 Part 3. SAT Prep: Test 4 Section 4 Part 4. SAT Prep: Test 4 Section 8 Part 1. SAT Prep: Test 4 Section 8 Part 2. SAT Prep: Test 4 Section 8 Part 3. SAT Prep: Test 4 Section 8 Part 4. SAT Prep: Test 5 Section 3 Part 1. SAT Prep: Test 5 Section 3 Part 2. SAT Prep: Test 5 Section 3 Part 3. SAT Prep: Test 5 Section 3 Part 4. SAT Prep: Test 5 Section 3 Part 5. SAT Prep: Test 5 Section 3 Part 6. SAT Prep: Test 5 Section 7 Part 1. SAT Prep: Test 5 Section 7 Part 2. SAT Prep: Test 5 Section 7 Part 3. SAT Prep: Test 5 Section 7 Part 4. SAT Prep: Test 5 Section 7 Part 5. SAT Prep: Test 5 Section 7 Part 6. SAT Prep: Test 5 Section 9 Part 1. SAT Prep: Test 5 Section 9 Part 2. SAT Prep: Test 5 Section 9 Part 3. SAT Prep: Test 5 Section 9 Part 4. SAT Prep: Test 6 Section 3 Part 1. SAT Prep: Test 6 Section 3 Part 2. SAT Prep: Test 6 Section 3 Part 3. SAT Prep: Test 6 Section 3 Part 4. SAT Prep: Test 6 Section 3 Part 5. SAT Prep: Test 6 Section 7 Part 1. SAT Prep: Test 6 Section 7 Part 2. SAT Prep: Test 6 Section 7 Part 3. SAT Prep: Test 6 Section 7 Part 4. SAT Prep: Test 6 Section 7 Part 5. SAT Prep: Test 6 Section 7 Part 6. SAT Prep: Test 6 Section 9 Part 1. SAT Prep: Test 6 Section 9 Part 2. SAT Prep: Test 6 Section 9 Part 3. SAT Prep: Test 6 Section 9 Part 4. SAT Prep: Test 7 Section 2 Part 1. SAT Prep: Test 7 Section 2 Part 2. SAT Prep: Test 7 Section 2 Part 3. SAT Prep: Test 7 Section 2 Part 4. SAT Prep: Test 7 Section 5 Part 1. SAT Prep: Test 7 Section 5 Part 2. SAT Prep: Test 7 Section 5 Part 3. SAT Prep: Test 7 Section 5 Part 4. SAT Prep: Test 7 Section 5 Part 5. SAT Prep: Test 7 Section 8 Part 1. SAT Prep: Test 7 Section 8 Part 2. SAT Prep: Test 7 Section 8 Part 3. SAT Prep: Test 7 Section 8 Part 4. SAT Prep: Test 8 Section 2 Part 1. SAT Prep: Test 8 Section 2 Part 2. SAT Prep: Test 8 Section 2 Part 3. SAT Prep: Test 8 Section 2 Part 4. SAT Prep: Test 8 Section 5 Part 1. SAT Prep: Test 8 Section 5 Part 2. SAT Prep: Test 8 Section 5 Part 3. SAT Prep: Test 8 Section 5 Part 4. SAT Prep: Test 8 Section 8 Part 1. SAT Prep: Test 8 Section 8 Part 2. SAT Prep: Test 8 Section 8 Part 3. SAT prep: test 1 section3 part 1. SAT Prep: Test 1 Section 3 Part 2. SAT Prep: Test 1 Section 3 Part 3. SAT Prep: Test 1 Section 3 Part 4. SAT Prep: Test 1 Section 3 Part 5. SAT Prep: Test 1 Section 3 Part 6. SAT Prep: Test 1 Section 3 Part 7. SAT Prep: Test 1 Section 3 Part 8. SAT Prep: Test 1 Section 6 Part 1. SAT Prep: Test 1 Section 6 Part 2. SAT Prep: Test 1 Section 6 Part 3. SAT Prep: Test 1 Section 6 Part 4. SAT Prep: Test 1 Section 6 Part 5. SAT Prep: Test 1 Section 6 Part 6. SAT Prep: Test 1 Section 9 Part 1. SAT Prep: Test 1 Section 9 Part 2. SAT Prep: Test 1 Section 9 Part 3. SAT Prep: Test 1 Section 9 Part 4. SAT Prep: Test 1 Section 9 Part 5. SAT Prep: Test 2 Section 3 part 1. SAT Prep: Test 2 Section 3 Part 2. SAT Prep: Test 2 Section 3 Part 3. SAT Prep: Test 2 Section 3 Part 4. SAT Prep: Test 2 Section 3 Part 5. SAT Prep: Test 2 Section 3 Part 6. SAT Prep: Test 2 Section 6 Part 1. SAT Prep: Test 2 Section 6 Part 2. SAT Prep: Test 2 Section 6 Part 3. SAT Prep: Test 2 Section 6 Part 4. SAT Prep: Test 2 Section 6 Part 5. SAT Prep: Test 2 Section 6 Part 6. SAT Prep: Test 2 Section 9 Part 1. SAT Prep: Test 2 Section 9 Part 2. SAT Prep: Test 2 Section 9 Part 3. SAT Prep: Test 2 Section 9 Part 4. SAT Prep: Test 3 Section 2 Part 1. SAT Prep: Test 3 Section 2 Part 2. SAT Prep: Test 3 Section 2 Part 3. SAT Prep: Test 3 Section 2 Part 4. Test 3 Section 2 Part 5. SAT Prep: Test 3 Section 4 Part 1. SAT Prep: Test 3 Section 4 Part 2. SAT Prep: Test 3 Section 4 Part 3. SAT Prep: Test 3 Section 4 Part 4. SAT Prep: Test 3 Section 4 Part 5. SAT Prep: Test 3 Section 8 Part 1. SAT Prep: Test 3 Section 8 Part 2. SAT Prep: Test 3 Section 8 Part 3. SAT Prep: Test 3 Section 8 Part 4. SAT Prep: Test 4 Section 2 Part 1. SAT Prep: Test 4 Section 2 Part 2. SAT Prep: Test 4 Section 2 Part 3. SAT Prep: Test 4 Section 2 Part 4. SAT Prep: Test 4 Section 2 Part 5. SAT Prep: Test 4 Section 2 Part 6. SAT Prep: Test 4 Section 4 Part 1. SAT Prep: Test 4 Section 4 Part 2. SAT Prep: Test 4 Section 4 Part 3. SAT Prep: Test 4 Section 4 Part 4. SAT Prep: Test 4 Section 8 Part 1. SAT Prep: Test 4 Section 8 Part 2. SAT Prep: Test 4 Section 8 Part 3. SAT Prep: Test 4 Section 8 Part 4. SAT Prep: Test 5 Section 3 Part 1. SAT Prep: Test 5 Section 3 Part 2. SAT Prep: Test 5 Section 3 Part 3. SAT Prep: Test 5 Section 3 Part 4. SAT Prep: Test 5 Section 3 Part 5. SAT Prep: Test 5 Section 3 Part 6. SAT Prep: Test 5 Section 7 Part 1. SAT Prep: Test 5 Section 7 Part 2. SAT Prep: Test 5 Section 7 Part 3. SAT Prep: Test 5 Section 7 Part 4. SAT Prep: Test 5 Section 7 Part 5. SAT Prep: Test 5 Section 7 Part 6. SAT Prep: Test 5 Section 9 Part 1. SAT Prep: Test 5 Section 9 Part 2. SAT Prep: Test 5 Section 9 Part 3. SAT Prep: Test 5 Section 9 Part 4. SAT Prep: Test 6 Section 3 Part 1. SAT Prep: Test 6 Section 3 Part 2. SAT Prep: Test 6 Section 3 Part 3. SAT Prep: Test 6 Section 3 Part 4. SAT Prep: Test 6 Section 3 Part 5. SAT Prep: Test 6 Section 7 Part 1. SAT Prep: Test 6 Section 7 Part 2. SAT Prep: Test 6 Section 7 Part 3. SAT Prep: Test 6 Section 7 Part 4. SAT Prep: Test 6 Section 7 Part 5. SAT Prep: Test 6 Section 7 Part 6. SAT Prep: Test 6 Section 9 Part 1. SAT Prep: Test 6 Section 9 Part 2. SAT Prep: Test 6 Section 9 Part 3. SAT Prep: Test 6 Section 9 Part 4. SAT Prep: Test 7 Section 2 Part 1. SAT Prep: Test 7 Section 2 Part 2. SAT Prep: Test 7 Section 2 Part 3. SAT Prep: Test 7 Section 2 Part 4. SAT Prep: Test 7 Section 5 Part 1. SAT Prep: Test 7 Section 5 Part 2. SAT Prep: Test 7 Section 5 Part 3. SAT Prep: Test 7 Section 5 Part 4. SAT Prep: Test 7 Section 5 Part 5. SAT Prep: Test 7 Section 8 Part 1. SAT Prep: Test 7 Section 8 Part 2. SAT Prep: Test 7 Section 8 Part 3. SAT Prep: Test 7 Section 8 Part 4. SAT Prep: Test 8 Section 2 Part 1. SAT Prep: Test 8 Section 2 Part 2. SAT Prep: Test 8 Section 2 Part 3. SAT Prep: Test 8 Section 2 Part 4. SAT Prep: Test 8 Section 5 Part 1. SAT Prep: Test 8 Section 5 Part 2. SAT Prep: Test 8 Section 5 Part 3. SAT Prep: Test 8 Section 5 Part 4. SAT Prep: Test 8 Section 8 Part 1. SAT Prep: Test 8 Section 8 Part 2. SAT Prep: Test 8 Section 8 Part 3.

Videos about currency exchange. Currency Exchange Introduction. Currency Effect on Trade. Currency Effect on Trade Review. Pegging the Yuan. Chinese Central Bank Buying Treasuries. American-Chinese Debt Loop. Debt Loops Rationale and Effects. China keeps peg but diversifies holdings.

Introduction to statistics. We start with the basics of reading and interpretting data and then build into descriptive and inferential statistics that are typically covered in an introductory course on the subject. Overview of Khan Academy statistics. Statistics intro: mean, median and mode. Constructing a box-and-whisker plot. Sample mean versus population mean.. Variance of a population. Sample variance. Review and intuition why we divide by n-1 for the unbiased sample variance. Simulation showing bias in sample variance. Simulation providing evidence that (n-1) gives us unbiased estimate. Statistics: Standard Deviation. Statistics: Alternate Variance Formulas. Introduction to Random Variables. Probability Density Functions. Binomial Distribution 1. Binomial Distribution 2. Binomial Distribution 3. Binomial Distribution 4. Expected Value: E(X). Expected Value of Binomial Distribution. Poisson Process 1. Poisson Process 2. Introduction to the Normal Distribution. Normal Distribution Excel Exercise. Law of Large Numbers. ck12.org Normal Distribution Problems: Qualitative sense of normal distributions. ck12.org Normal Distribution Problems: Empirical Rule. ck12.org Normal Distribution Problems: z-score. ck12.org Exercise: Standard Normal Distribution and the Empirical Rule. ck12.org: More Empirical Rule and Z-score practice. Central Limit Theorem. Sampling Distribution of the Sample Mean. Sampling Distribution of the Sample Mean 2. Standard Error of the Mean. Sampling Distribution Example Problem. Confidence Interval 1. Confidence Interval Example. Mean and Variance of Bernoulli Distribution Example. Bernoulli Distribution Mean and Variance Formulas. Margin of Error 1. Margin of Error 2. Small Sample Size Confidence Intervals. Hypothesis Testing and P-values. One-Tailed and Two-Tailed Tests. Z-statistics vs. T-statistics. Type 1 Errors. Small Sample Hypothesis Test. T-Statistic Confidence Interval. Large Sample Proportion Hypothesis Testing. Variance of Differences of Random Variables. Difference of Sample Means Distribution. Confidence Interval of Difference of Means. Clarification of Confidence Interval of Difference of Means. Hypothesis Test for Difference of Means. Comparing Population Proportions 1. Comparing Population Proportions 2. Hypothesis Test Comparing Population Proportions. Squared Error of Regression Line. Proof (Part 1) Minimizing Squared Error to Regression Line. Proof Part 2 Minimizing Squared Error to Line. Proof (Part 3) Minimizing Squared Error to Regression Line. Proof (Part 4) Minimizing Squared Error to Regression Line. Regression Line Example. Second Regression Example. R-Squared or Coefficient of Determination. Calculating R-Squared. Covariance and the Regression Line. Correlation and Causality. Chi-Square Distribution Introduction. Pearson's Chi Square Test (Goodness of Fit). Contingency Table Chi-Square Test. ANOVA 1 - Calculating SST (Total Sum of Squares). ANOVA 2 - Calculating SSW and SSB (Total Sum of Squares Within and Between).avi. ANOVA 3 -Hypothesis Test with F-Statistic. Another simulation giving evidence that (n-1) gives us an unbiased estimate of variance. Mean Median and Mode. Range and Mid-range. Reading Pictographs. Reading Bar Graphs. Reading Line Graphs. Reading Pie Graphs (Circle Graphs). Misleading Line Graphs. Stem-and-leaf Plots. Box-and-Whisker Plots. Reading Box-and-Whisker Plots. Statistics: The Average. Statistics: Variance of a Population. Statistics: Sample Variance. Deductive Reasoning 1. Deductive Reasoning 2. Deductive Reasoning 3. Inductive Reasoning 1. Inductive Reasoning 2. Inductive Reasoning 3. Inductive Patterns.

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.

Learn about blood pressure and how we measure it. Take a deeper dive and find out how blood pressure is related to resistance and flow!. What is blood pressure?. Learn how a stethoscope can help determine blood pressure. Resistance in a tube. Adding up resistance in series and in parallel. Adding up resistance problem. Flow and Perfusion. Putting it all together: Pressure, flow, and resistance. Blood pressure changes over time. What is blood pressure?. Learn how a stethoscope can help determine blood pressure. Resistance in a tube. Adding up resistance in series and in parallel. Adding up resistance problem. Flow and Perfusion. Putting it all together: Pressure, flow, and resistance. Blood pressure changes over time.

Greek Debt Recession and Austerity (part 1). Greek Financial Crisis (part 2). How and why Greece would leave the Euro (part 3). Why Europe is worried about Greece.

Taxonomy and the Tree of Life. Species. Bacteria. Viruses. Human Prehistory 101: Prologue. Human Prehistory 101 Part 1: Out of (Eastern) Africa. Human Prehistory 101 Part 2: Weathering The Storm. Human Prehistory 101 Part 3: Agriculture Rocks Our World. Human Prehistory 101: Epilogue. Taxonomy and the Tree of Life. Species. Bacteria. Viruses. Human Prehistory 101: Prologue. Human Prehistory 101 Part 1: Out of (Eastern) Africa. Human Prehistory 101 Part 2: Weathering The Storm. Human Prehistory 101 Part 3: Agriculture Rocks Our World. Human Prehistory 101: Epilogue.

See how Khan Academy is used in real-life. Covers various models in public, charter, and independent schools as well as community programs with elementary, middle, and high school students. We're excited about the way these schools are using our resources and are eager to learn from more teachers and students. Khan Academy at Eastside College Prep. About Eastside Prep. Khan Academy in Los Altos School District. About LASD. 3rd graders build robots at Santa Rita Elementary School. NPR Story on KA Los Altos Pilots (June 2011). The Gates Notes: Teachers in Los Altos. The Gates Notes: Students in Los Altos. The Gates Notes: Administrators in Los Altos. 6th graders learn to build a Spider robot. Khan Academy at Oakland Unity High School. About Oakland Unity. Khan Academy chats with teachers - Oct 11, 2012. Khan Academy at KIPP. About KIPP. Khan Academy at Summit Prep. About Summit Public Schools. Khan Academy at Eastside College Prep. About Eastside Prep. Khan Academy in Los Altos School District. About LASD. 3rd graders build robots at Santa Rita Elementary School. NPR Story on KA Los Altos Pilots (June 2011). The Gates Notes: Teachers in Los Altos. The Gates Notes: Students in Los Altos. The Gates Notes: Administrators in Los Altos. 6th graders learn to build a Spider robot. Khan Academy at Oakland Unity High School. About Oakland Unity. Khan Academy chats with teachers - Oct 11, 2012. Khan Academy at KIPP. About KIPP. Khan Academy at Summit Prep. About Summit Public Schools.

Find out more about heart muscles and what happens when they contract. Three Types of Muscle. Heart Cells Up Close!. Myosin and Actin. Tropomyosin and troponin and their role in regulating muscle contraction. Calcium Puts Myosin to Work. Sympathetic Nerves Affect Myosin Activity. Why Doesn't the Heart Rip?. Three Types of Muscle. Heart Cells Up Close!. Myosin and Actin. Tropomyosin and troponin and their role in regulating muscle contraction. Calcium Puts Myosin to Work. Sympathetic Nerves Affect Myosin Activity. Why Doesn't the Heart Rip?.

Solving and writing algebraic ratios and proportions. Solving rational equations. Introduction to Ratios (new HD version). Understanding Proportions. Ratios as Fractions in Simplest Form. Simplifying Rates and Ratios. Find an Unknown in a Proportion. Ratio and Proportion. Find an Unknown in a Proportion 2. Another Take on the Rate Problem. Finding Unit Rates. Finding Unit Prices. Writing Proportions. Ratio problem with basic algebra (new HD). More advanced ratio problem--with Algebra (HD version). Alternate Solution to Ratio Problem (HD Version). Advanced ratio problems. Unit conversion. Conversion between metric units. Converting within the metric system. Converting pounds to ounces. Converting Gallons to quarts pints and cups. Converting Farenheit to Celsius. Comparing Celsius and Farenheit temperature scales. Applying the Metric System. U.S. Customary and Metric units. Converting Yards into Inches. Unit Conversion with Fractions. Performing arithmetic calculations on units of volume. Application problems involving units of weight. Solving application problems involving units of volume. Unit Conversion Example: Drug Dosage. Perimeter and Unit Conversion. Rational Equations. Solving Rational Equations 1. Solving Rational Equations 2. Solving Rational Equations 3. Applying Rational Equations 1. Applying Rational Equations 2. Applying Rational Equations 3. Extraneous Solutions to Rational Equations. Rational Inequalities 2.

Defining and using the commutative, associative, distributive, identity, and inverse properties. Commutative Law of Addition. Commutative Law of Multiplication. Associative Law of Addition. Associative Law of Multiplication. Commutative Property for Addition. The Distributive Property. The Distributive Property 2. Distributive Property Example 1. CA Algebra I: Number Properties and Absolute Value. Identity Property of 1. Identity property of 1 (second example). Identity property of 0. Inverse Property of Addition. Inverse Property of Multiplication. Why Dividing by Zero is Undefined. Why Zero Divided by Zero is Undefined/Indeterminate. Undefined and Indeterminate.

From the frivolous paintings of Fragonard to the politically-charged moralizing images of David, this tutorial brings us from the King of France and his court

Solving and writing ratios and proportions without algebra. Introduction to Ratios (new HD version). Understanding Proportions. Ratios as Fractions in Simplest Form. Simplifying Rates and Ratios. Find an Unknown in a Proportion 2. Finding Unit Rates. Finding Unit Prices. Unit conversion. Converting units of length. Conversion between metric units. U.S. Customary and Metric units. Converting within the metric system. Converting Gallons to quarts pints and cups. Converting pounds to ounces. Comparing Celsius and Farenheit temperature scales. Converting Fahrenheit to Celsius. Speed translation.

Identifying types of quadrilaterals, finding measurements, and applying and proving postulates. Quadrilateral Overview. Quadrilateral Properties. Area of a Parallelogram. Area of a Regular Hexagon. Sum of Interior Angles of a Polygon. Sum of the exterior angles of convex polygon. Proof - Opposite Angles of Parallelogram Congruent. Proof - Opposite Sides of Parallelogram Congruent. Proof - Diagonals of a Parallelogram Bisect Each Other. Rhombus Diagonals. Proof - Rhombus Diagonals are Perpendicular Bisectors. Proof - Rhombus Area Half Product of Diagonal Length. Area of a Parallelogram. Area of a Regular Hexagon. Problem involving angle derived from square and circle. 2003 AIME II Problem 7. CA Geometry: Deducing Angle Measures.

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.

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.

Identifying, solving, and graphing various types of functions. What is a function. Difference between Equations and Functions. Function example problems. Ex: Constructing a function. Understanding Function Notation Example 1). Understanding Function Notation Example 2). Understanding Function Notation Example 3). Understanding function notation. Testing if a relationship is a function. Graphical Relations and Functions. Functions as Graphs. Recognizing functions (example 1). Recognizing functions (example 2). Recognizing functions. Relations and Functions. Functional Relationships 1. Recognizing functions (example 3). Recognizing functions (example 4). Recognizing functions (example 5). Recognizing functions 2. Domain of a function. Domain and Range of a Relation. Domain and Range of a Function Given a Formula. Domain and Range 1. Domain of a Radical Function. Domain of a function. Domain and Range 2. Domain and Range of a Function. Range of a function. Domain and range from graphs. Domain and range from graph. Direct and Inverse Variation. Recognizing Direct and Inverse Variation. Proportionality Constant for Direct Variation. Direct and inverse variation. Direct Variation Models. Direct Variation 1. Inverse Variation Application. Direct Inverse and Joint Variation. Direct Variation Application. Ex 1: Evaluating a function. Ex 2: Graphing a basic function. Graphing a parabola with a table of values. Ex 4: Graphing radical functions. Ex: Graphing exponential functions. Views of a function. Interpreting a graph exercise example. Interpreting graphs of linear and nonlinear functions. Quotient of Functions. Sum of Functions. Product of Functions. Difference of Functions. Evaluating a function expression. Evaluating expressions with function notation. Evaluating composite functions example. Evaluating composite functions. Introduction to Function Inverses. Function Inverse Example 1. Function Inverses Example 2. Function Inverses Example 3. Inverses of functions. New operator definitions. New operator definitions 1. New operator definitions 2. New operator definitions 2. Introduction to functions. Functions Part 2. Functions (Part III). Functions (part 4). What is a function. Difference between Equations and Functions. Function example problems. Ex: Constructing a function. Understanding Function Notation Example 1). Understanding Function Notation Example 2). Understanding Function Notation Example 3). Understanding function notation. Testing if a relationship is a function. Graphical Relations and Functions. Functions as Graphs. Recognizing functions (example 1). Recognizing functions (example 2). Recognizing functions. Relations and Functions. Functional Relationships 1. Recognizing functions (example 3). Recognizing functions (example 4). Recognizing functions (example 5). Recognizing functions 2. Domain of a function. Domain and Range of a Relation. Domain and Range of a Function Given a Formula. Domain and Range 1. Domain of a Radical Function. Domain of a function. Domain and Range 2. Domain and Range of a Function. Range of a function. Domain and range from graphs. Domain and range from graph. Direct and Inverse Variation. Recognizing Direct and Inverse Variation. Proportionality Constant for Direct Variation. Direct and inverse variation. Direct Variation Models. Direct Variation 1. Inverse Variation Application. Direct Inverse and Joint Variation. Direct Variation Application. Ex 1: Evaluating a function. Ex 2: Graphing a basic function. Graphing a parabola with a table of values. Ex 4: Graphing radical functions. Ex: Graphing exponential functions. Views of a function. Interpreting a graph exercise example. Interpreting graphs of linear and nonlinear functions. Quotient of Functions. Sum of Functions. Product of Functions. Difference of Functions. Evaluating a function expression. Evaluating expressions with function notation. Evaluating composite functions example. Evaluating composite functions. Introduction to Function Inverses. Function Inverse Example 1. Function Inverses Example 2. Function Inverses Example 3. Inverses of functions. New operator definitions. New operator definitions 1. New operator definitions 2. New operator definitions 2. Introduction to functions. Functions Part 2. Functions (Part III). Functions (part 4).

CA Algebra I: Number Properties and Absolute Value. CA Algebra I: Simplifying Expressions. CA Algebra I: Simple Logical Arguments. CA Algebra I: Graphing Inequalities. CA Algebra I: Slope and Y-intercept. CA Algebra I: Systems of Inequalities. CA Algebra I: Simplifying Expressions. CA Algebra I: Factoring Quadratics. CA Algebra I: Completing the Square. CA Algebra I: Quadratic Equation. CA Algebra I: Quadratic Roots. CA Algebra I: Rational Expressions 1. CA Algebra I: Rational Expressions 2. CA Algebra I: Word Problems. CA Algebra I: More Word Problems. CA Algebra I: Functions.