• #### Ray Diagrams

##### Science›Physics›Light
Drawing the ray diagrams for convex and concave lenses.
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ray diagrams
• #### Phase Diagrams

##### Science›Chemistry›Kinetic-Molecular Theory
How to draw and interpret phase diagrams.
• #### Orbital Diagrams

##### Science›Chemistry›The Atom
How to depict the electronic configuration of atoms using orbital diagrams.
• #### Lewis Electron Dot Diagram

##### Science›Chemistry›Chemical Bonds
How to draw Lewis Electron Dot Diagrams.
• #### Free-Body Force Diagrams

##### Science›Physics›Newton's Laws of Motion
Drawing and interpreting free-body force diagrams.
• #### Energy Diagrams

##### Science›Chemistry›Chemical Reaction Rates
How to graphically depict the variation in the energy of substances involved in reactions as they progress from reactants to products.

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• #### Electric Fields

##### Science›Physics›Electricity
Drawing and interpreting electric field diagrams
• #### Set Operation: Union - Concept

##### Math›Precalculus›Linear Equations and Inequalities
How to define union.
• #### Fundamental Counting Principal - Concept

##### Math›Algebra 2›Combinatorics
How to use the fundamental counting principal.
• #### Set Operation: Union - Concept

##### Math›Algebra 2›Linear Inequalities
How to define union.
• #### Set Operation: Intersection - Concept

##### Math›Algebra 2›Linear Inequalities
How to solve define intersection.
• #### Set Operation: Intersection - Concept

##### Math›Precalculus›Linear Equations and Inequalities
How to solve define intersection.
• #### Fundamental Counting Principal - Concept

##### Math›Precalculus›Topics in Discrete Math
How to use the fundamental counting principal.
• #### Compare and Contrast Essay

##### English›Writing›Types of Essays
An explanation of compare/contrast essays and steps on how to write one.