the number line 139 videos

Number of Handshakes at a Party
Geometry Reasoning, Diagonals, Angles and Parallel Lines
How to determine the number of handshakes possible in a group of a certain number of people.
mathematical modeling non linear functions diagonals 
Number of Diagonals in a Polygon
Geometry Reasoning, Diagonals, Angles and Parallel Lines
How to determine the number of diagonals in a polygon.
vertex diagonal non consecutive vertices polygon 
Properties of Real Numbers
Algebra 2 Real Numbers
How to define the properties of real numbers.
associative commutative distributive identity inverse 
Finding the Equation of a Graphed Line
Algebra Linear Equations and Their Graphs
How to write the equation of a graphed line.
point slope form slope intercept form slope y intercept 
Horizontal and Vertical Lines
PreAlgebra Graphing in Two Dimensions
Equations and slopes of horizontal and vertical lines

Converting Complex Numbers From Rectangular Form to Trigonometric
Precalculus Polar Coordinates and Complex Numbers
How to convert a complex number from rectangular form to trigonometric form.
complex numbers rectangular form trigonometric form modulus argument 
Cyclic Quadrilaterals and Parallel Lines in Circles
Geometry Circles
How to prove that opposite angles in a cyclic quadrilateral are congruent; how to prove that parallel lines create congruent arcs in a circle.
inscribed angles cyclic quadrilaterals parallel lines alternate interior angles 
Graphing Lines using Intercepts
Algebra Linear Equations and Their Graphs
How to graph a line using the x and y intercepts.
x intercept y intercept standard form 
Parallel and Perpendicular Lines
Algebra Linear Equations and Their Graphs
How to determine whether lines are parallel, perpendicular, or neither.
parallel perpendicular point slope form intersect right angle 
Duplicating a Line Segment
Geometry Constructions
How to duplicate a line segment using a compass and straightedge.
congruent segments construction compass straightedge 
Line of Best Fit
PreAlgebra Introductory Statistics
Overview of correlation, scatterplots, and line of best fit

Converting Improper Fractions and Mixed Numbers
PreAlgebra Fractions and MIxed Numbers
Vocabulary of improper fractions and mixed numbers

Chemistry Mole
Chemistry Chemical Reactions
The meaning and functionality of Avogadro's number in chemistry.
chemistry mole Avogadro's number 
Constructing Parallel Lines
Geometry Constructions
How to construct parallel lines using three different methods.
transversal duplicating angles corresponding alternate interior alternate exterior 
Finding the Slope of a Line from a Graph
Algebra Linear Equations and Their Graphs
How to find the slope of a line if given a graph.
slope change ratio fraction slope triangle 
Finding the Slope of a Line from an Equation
Algebra Linear Equations and Their Graphs
How to use the slopeintercept form of a line.
slope slope intercept form y intercept 
Graphing Lines using a Table of Values
Algebra Linear Equations and Their Graphs
How to graph a line by making a table of values.
table of values substitution 
Finding the Slope of a Line from a Graph
Algebra 2 Graphs of Linear Equations
How to find the slope of a line if given a graph.
slope change ratio fraction slope triangle