• #### Constructing the Centroid - Problem 2

##### Math›Geometry›Constructions
How to find missing lengths in a triangle where the three medians are drawn creating the centroid.

• #### Introduction to Systems of Equations - Problem 5

##### Math›Algebra›Solving Systems of Equations
How to algebraically determine whether a point is a solution to a given system
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• #### Secants - Problem 4

##### Math›Geometry›Circles
How to fin the length of secant segments drawn from points outside a circle.
• #### Graphing Polar Equations - Concept

##### Math›Precalculus›Polar Coordinates and Complex Numbers
How to sketch a simple polar curve by plotting points.
• #### Introduction to Parabolas - Problem 4

##### Math›Precalculus›Equations of Lines, Parabolas and Circles
How to write the equation for a parabola given specific points.
• #### Distance Formula - Problem 1

##### Math›Geometry›Pythagorean Theorem
How to find the distance between two points on the coordinate plane using the distance formula.
• #### Tangent Segments to a Circle - Concept

##### Math›Geometry›Circles
How to find the length of tangent segments drawn to a circle from the same point.
• #### Systems of Inequalities - Problem 7

##### Math›Algebra›Solving Systems of Equations
Writing constraints, shading the feasible region, and finding solution points to a system of inequalities that models a word problem
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• #### Graphing Quadratic Equations - Problem 9

##### Math›Algebra›Quadratic Equations and Functions
Using 5 key points to graph a quadratic function when the "b" value is zero.
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• #### The Quotient Rule - Problem 3

##### Math›Calculus›Techniques of Differentiation
How to differentiate a quotient of two functions when values of a numerator and denominator are given.
• #### Multiplication and Division with Decimals - Concept

##### Math›Pre-Algebra›Decimals and Percents
Multiplying and dividing decimals by ignoring and later replacing the decimal point
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• #### Introduction to Parabolas - Problem 5

##### Math›Precalculus›Equations of Lines, Parabolas and Circles
How to write the equation for a parabola from a graph or from the vertex and one other point
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• #### Constructing a Perpendicular to a Line - Concept

##### Math›Geometry›Constructions
How to find the shortest distance between a point and a line.
• #### Constructing a Perpendicular to a Line - Problem 1

##### Math›Geometry›Constructions
How to construct a perpendicular through a point not on a line to a line.
• #### Graphing Quadratic Equations - Problem 11

##### Math›Algebra›Quadratic Equations and Functions
Using 5 key points to graph a quadratic function when the vertex is the x-intercept.
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• #### Constructing the Incenter - Problem 1

##### Math›Geometry›Constructions
How to construct the inscribed circle of a triangle using a compass and straightedge.
• #### Optimization Using the Closed Interval Method - Concept

##### Math›Calculus›Applications of the Derivative
How to evaluate the limit of a function at points where it is not continuous.
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• #### Midpoint Formula - Problem 2

##### Math›Algebra 2›Graphs of Linear Equations
How to find an endpoint given the midpoint and other endpoint, using the midpoint formula.
• #### Vapor Pressure Lowering

##### Science›Chemistry›Chemical Solutions
Understanding the colligative property of solutions that elevates boiling point.