Videos [1–100 of 9495 videos]
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02:09Identifying the Optical Axis of a Curved Object
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02:18
Identifying the Optical Axis of a Semicircular Object
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04:11
Using Newton’s Second Law to Explain the Deceleration of a Moving Object
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07:49
Adding Objects
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10:34
Adding Zero
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17:27
Angles of Intersecting Lines in a Circle
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06:05
Calculating the Average Atomic Mass of a Lithium Sample from the Isotopes' Atomic Masses and Their Percentages in the Sample
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03:19
Calculating the Change of the Volume of a Gas under Constant Pressure from the Change in Its Temperature
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02:16
Calculating the Derivative at a Point
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03:13
Circles
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09:28
Comparing the Speed and Distance of Two Moving Bodies from Their Velocity–Time Graph
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03:23
Computing Logarithmic Expressions Using Laws of Logarithms
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01:15
Determining Whether Two Complex Numbers Are Conjugates
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03:55
Differentiating a Combination of Root and Polynomial Functions Using the Product Rule
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03:34
Differentiating Compositions of Polynomial and Root Functions Using the Chain Rule
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03:06
Differentiating Reciprocal Trigonometric Functions Using the Chain Rule
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03:17
Differentiating Root Functions Using the Chain Rule
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03:47
Differentiating Root Functions Using the Chain Rule
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05:26
Discussing the Continuity of a Piecewise-Defined Functions Involving Trigonometric Ratios at a Point
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15:07
Electromotive Force and Internal Resistance
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01:31
Estimating the Value of Logarithms Using Laws of Logarithms
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01:16
Evaluating Algebraic Expressions Using Laws of Exponents
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06:12
Evaluating the Rate of Change of a Radical Function at a Point
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02:01
Finding the Area of a Rectangle given Its Dimensions as Decimal Numbers
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02:34
Finding the Derivative of a Function Involving Trigonometric and Exponential Functions Using the Product Rule
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02:04
Finding the Derivative of a Function Involving Trigonometric and Exponential Functions Using the Product Rule
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03:53
Finding the Equation of the Tangent to the Curve of a Polynomial Function at a Given Point
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02:30
Finding the Expression of a Function given the Expression of Its Slope and a Point on the Function Using Indefinite Integration
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02:22
Finding the First and Second Derivatives of a Function Using the Power Rule
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03:30
Finding the First Derivative of the Product of Two Trigonometric Functions at a Point
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03:39
Finding the First Derivative of the Quotient of Trigonometric and Linear Functions Using the Quotient Rule
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03:02
Finding the Limit of a Quotient of Trigonometric and Linear Functions at a Point
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02:31
Finding the Measure of an Inscribed Angle given the Diameter of the Circle and the Measure of Another Inscribed Angle
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01:12
Finding the Modulus of Complex Numbers
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02:02
Finding the Modulus of the Sum of Two Complex Numbers in Algebraic Form
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03:45
Finding the Rate of Change of a Reciprocal Function at a Given x-Value
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03:33
Finding the Second Derivative of a Function
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06:19
Finding the Third Derivative of Trigonometric Functions Using the Product Rule
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01:17
Finding the Value of the Constant in a Quadratic Function If It Passes through a Given Point
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04:45
Finding Unknown Coefficients in a Polynomial Function given the Equation of Its Tangent at a Given Point
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07:30
Identifying the Ray of the Greatest Refraction Angle in a Concave Lens
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11:01
Making 10
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12:24
Making 6 and 7
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11:40
Matter Waves
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10:28
Missing Numbers in Addition Equations
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02:18
Multiplying Decimal Numbers
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17:39
Quadratic Functions in Different Forms
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10:07
Relating Addition to Subtraction: Numbers up to 10
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01:03
Solving Quadratic Equations
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01:29
Solving Quadratic Equations by Taking Square Roots
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00:50
Solving Simple Quadratic Equations
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10:07
Subtracting Ones from Teen Numbers: Making Ten
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11:46
Subtracting Zero and All
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13:12
Subtraction Equations
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00:59
The Formula for the Modulus of a Complex Number
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12:09
The Mode of a Data Set
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03:33
Thermal Radiation
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04:28
Understanding How Heat Absorption and Emission Relates to Temperature Change
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01:34
Using Experimental Probability to Determine the Expected Number of Outcomes of an Event
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12:29
Word Problems: Putting Objects Together
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04:41
Writing a Decimal in Standard Form
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11:10
Adding and Subtracting Numbers up to 10
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09:12
Adding One-Digit Numbers by Making Ten
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11:23
Addition Equations
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10:11
Comparing Groups of Objects: More Than
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02:57
Determining the Complement of intersection of Two Events
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12:24
Drawing Conclusions
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04:24
Equilibrium of Bodies Resting on Rough Inclined Planes
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04:37
Estimating the Activation Energy of a Reaction from Temperature and Reaction Rate
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01:45
Evaluating Numerical Logarithmic Expressions Using Laws of Logarithms
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04:22
Finding the Area of a Trapezoid
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03:53
Finding the Area of the Triangle Whose Vertices Are the Vertex and the Real Roots of a Quadratic Function given Its Graph
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05:46
Finding the Equation of the Tangent to a Curve Defined Implicitly at a Given Point Using Implicit Differentiation
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03:24
Finding the Equation of the Tangent to the Curve of a Function at a Point
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07:03
Finding the Friction Force Acting on a Body on a Rough Inclined Plane Where the Body Is about to Move down the Plane
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06:01
Finding the Magnitude and Direction of Friction of a Body Resting in Equilibrium on an Inclined Rough Surface While an Inclined Force Is Acting on It
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02:23
Finding the Number of Ways to Choose 𝑛 out of 𝑚 Things
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02:52
Finding the Number of Ways to Choose 𝑛 out of 𝑚 Things
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01:35
Finding the Solution Set of Exponential Equations Using Logarithms
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01:26
Finding the Surface Area of a Prism
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15:44
Inscribed Angles in a Circle
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08:17
Making 11, 12, and 13
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10:02
Making 17, 18, and 19
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02:07
Multiplying a Decimal Number by Another
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12:54
Parts and Wholes
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16:26
Photon Momentum
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16:54
Slope and Rate of Change
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04:23
Studying the Equilibrium of a Body Resting on a Rough Inclined Plane in Different Conditions
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14:55
Symmetry in 3D Shapes
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05:58
The Coefficient of Friction between a Body and a Rough Plane
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16:46
The Pythagorean Theorem in 3D
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01:07
Using Experimental Probability to Determine the Expected Number of Outcomes of an Event
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01:43
Using Experimental Probability to Determine the Expected Number of Outcomes of an Event
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06:42
Using Implicit Differentiation and the Product Rule to Find the Value of an Expression Containing the First and Second Derivatives
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03:18
Using the Binomial Theorem
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08:29
Word Problems: Taking Apart
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02:53
Solving Word Problem Involving Proportions
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02:47
Using a System of Linear Equations to Find Two Quantities given Their Difference and Ratio
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01:41
Calculating the Frequency of a Diving Board
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01:42
Calculating Wave Frequency from Distance–Time Graph
