• #### Setting in Story

##### English›Writing›Writing Terms
The importance of setting in a story.
• #### Area and Perimeter of Triangles - Concept

##### Math›Pre-Algebra›Introductory Geometry
Understanding why the area of a triangle is 1/2 base times height
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• #### Area of Parallelograms - Problem 3

##### Math›Geometry›Area
How to find the height of a parallelogram given two base lengths and a different height.
• #### Scientific Units

##### Science›Chemistry›Introduction to Chemistry
How to use and convert scientific units.
• #### Average Speed

##### Science›Physics›Linear and Projectile Motion
How to calculate average speed.
• #### Scientific Units

##### Science›Physics›Introduction to Physics
How to use and convert scientific units.
• #### Multiplying and Dividing Rationals - Problem 10

##### Math›Algebra›Rational Expressions and Functions
Multiplying a fraction with a polynomial times a polynomial.
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• #### Compound Interest (Continuously) - Problem 2

##### Math›Precalculus›Exponential and Logarithmic Functions
How to use the compounded continuously formula to find the tripling time of an investment.
• #### Speed-Instantaneous Speed

##### Science›Physics›Linear and Projectile Motion
Understanding the differences between speed and instantaneous speed.
• #### Addition and Subtraction with Decimals - Problem 3

##### Math›Pre-Algebra›Decimals and Percents
Word problem relating adding decimals to racing times
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• #### Economics: Cost & Revenue - Problem 1

##### Math›Calculus›Applications of the Derivative
How to determine intervals of time when the average rate of change is negative or positive, and how to compute average rate of change from a graph.
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None
• #### Instantaneous Velocity

##### Science›Physics›Linear and Projectile Motion
How to find instantaneous velocity.
• #### Work Word Problems - Problem 3

##### Math›Algebra›Word Problems Using Systems of Equations
Algorithm for solving "work" word problems including shared job and individual job completion times
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• #### Adding and Subtracting Rational Expression - Problem 5

##### Math›Algebra›Rational Expressions and Functions
Work application, or total time to finish a job using a rational equation.
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• #### Parametric Equations and Motion - Concept

##### Math›Precalculus›Vectors and Parametric Equations
How to graph a parametric curve, and how to eliminate the parameter to obtain a rectangular equation for the curve.
• #### Optimization Using the Second Derivative Test - Concept

##### Math›Calculus›Applications of the Derivative
How to compute the average velocity of an object moving in one dimension from a graph of its position vs. time.
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None
• #### Compound Interest (Continuously) - Problem 2

##### Math›Algebra 2›Inverse, Exponential and Logarithmic Functions
How to use the compounded continuously formula to find the tripling time of an investment.
• #### Exponential Growth and Decay - Problem 6

##### Math›Algebra 2›Inverse, Exponential and Logarithmic Functions
Predict how many of a population will be present after a certain amount of time.
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• #### Multiplying Monomials and/or Binomials and FOIL - Problem 6

##### Math›Algebra›Polynomials
An area, or geometric model for multiplying polynomials is explored through a "rectangle" or "box" method of organizing terms.