
Math Help 24/7
Welcome to Math Help 24/7
Below you will find math courses that have links to video tutorials created by Valencia math professors. The videos use a variety of technologies, all simple to view, but some will require flash player. If you need flash player installed, you will be given directions on how to install this at the time it is needed..
Please answer a few questions using our feedback form. Any information will be helpful in improving the website and the content provided.
MAT0018C
 Integer Basics
 Addition and Subtraction
 Multiplication and Division
 PreAlgebra Skills
 Translating word problems into symbols
 Collecting like terms
 Order of operations
 Solving linear equations with variables on both sides
 Fraction Basics
 Addition and Subtraction
 Multiplication and Division
 Fraction Skills
 Solving equations with fractions
 Applications with fractions
 Decimal Basics
 Addition and Subtraction
 Multiplication and Division
 Decimal Skills, Percent, and Applications
 Solving equations with decimals
 Applications with percents
 Comparing fractions with decimals
 Perimeter, Area, Volume
 Perimeter
 Area
 Volume
 Measurement conversion
Joshua Guillemette
Courses: MAT0018C, MAT0028C, MAT1033C
Hobbies: NASCAR, Chess, and Reading NonFiction
Alison Hammack
Courses: MAT0018C, MAT0028C, MAT1033C
Hobbies: Parenting sons, Family adventures, Horses
Darren Lacoste
Courses: MAT0018C, MAT0028C
Hobbies: Strategy Games, Singing
Shalini Gopalkrishnan
Courses: MAT0018C, MAT0028C, MAT1033C
Hobbies:
Julie Phelps
Courses: MAT0018C, MAT0028C, MAT1033C, MAC1105
Hobbies:
 Linear Equations
 Solving equations that contain fractions
 Solving literal equations
 Solving linear inequalities
 Find equation of a line given a table or graph
 Linear Equation Applications
 Learning the four problemsolving steps
 Dimensions of a rectangle
 Distance, rate, time
 Sale, discount, discount rate
 Simple interest
 Percent increase/decrease
 Area/Perimeter/Tax
 Mixture problems
 Graphs and Graph Information
 Interpreting slope
 Plotting points, writing ordered pairs
 Verifying solutions of equations
 Determining slope from points
 Graphing with intercepts
 Graphing horizontal & vertical lines
 Writing y=mx+b from graph
 Graphing from y=mx+b using slope
 Convert standard form to y=mx+b
 Completing tables to graph lines, mx+b
 Complete table to graph lines, standard form
 Complete table to graph line, standard=0
 Setting a graphing window outside of the standard window
 Exponents and Polynomials
 Order of operations
 Negative exponents
 Fractions
 Decimals
 Factoring
 Factoring polynomial expressions
 Solving trinomials by factoring
 Factoring a trinomial using xfactor
 Rational Expressions
 Addition and Subtraction
 Multiplication and Division
 Simplifying rational expressions
 Measurement conversion
 Radicals
 Simplifying radicals
 Addition and Subtraction
 Rationalizing the denominator
 Pythagorean theorem
Lisa Cohen
Courses: MAT0028C, MGF1106, MAC2233
Hobbies:
Joshua Guillemette
Courses: MAT0018C, MAT0028C, MAT1033C
Hobbies: NASCAR, Chess, Reading
Alison Hammack
Courses: MAT0018C, MAT0028C, MAT1033C
Hobbies: Parenting, Family Adventures, Horses
MAT0028C
Darren Lacoste
Courses: MAT0018C, MAT0028C
Hobbies: Strategy Games, Singing
Jennifer Lawhon
Courses: MAT0028, MAC1105, MGF1106, STA2023
Hobbies: Running, Singing, Playing Piano
Julie Phelps
Courses: MAT0018C, MAT0028C, MAT1033C, MAC1105
Hobbies:
Amanda Saxman
Courses: MAT0028, MAT1033, MAC1105, MAE2801
Hobbies: Dancing, Singing, Reading
MAT1033C
 Exponent review  negative and rational exponents
 Solving equations with rational expressions
 Solving equations using the quadratic formula
 Interpreting slope
 Solving inequalities graphically
 Word problems
 Factoring
 Area/Perimeter/Tax
Word Problems
 Solving linear inequalities
 Addition and subtraction of rational expressions
 Compound inequalities and interval notation
 Quadratic max/min applications
 Solving by extracting roots
 Solving systems of equations by elimination
 Equations of lines from a table
 Equations of lines from a graph
 Graphing inequalities
 Finding points of intersection on the calculator
 Negative exponents
 Solving systems of equations by substitution
 Division and multiplication of rational expressions
 Vertex form
 Completing tables on the calculator
 Intermediate Algebra Videos  (this link goes to a series of videos presenting exercises similar to those found in the current textbook by Mark Clark and Cynthia Anfinson)
Joel Berman
Courses: MAT0018, MAT0028, MAT1033
Hobbies: Golf, Knitting, Riding my motorcycle
Lisa Cohen
Courses: MAT0028, MGF1106, MAC2233
Hobbies:
Abdellatif Dasser
Courses: MAP2302, MAC 2311, 2312, 2313, MAC2233, MAC 1105
Hobbies: Playing soccer, swimming, and reading
Joshua Guillemette
Courses: MAT0018, MAT0028, MAT1033
Hobbies: NASCAR, Chess, and Reading NonFiction
Alison Hammack
Courses: MAT0018, MAT0028, MAT1033
Hobbies: Parenting sons, Family adventures, Horses
Jennifer Lawhon
Courses: MAT0028, MAC1105, MGF1106, STA2023
Hobbies: Running, Singing, Playing Piano
Amanda Saxman
Courses: MAT0028, MAT1033, MAC1105, MAE2801
Hobbies: swing dancing, tap dancing, singing, reading
MAC1105
 Applications with exponential functions
 Average rate of change
 Completing the square
 Complex numbers
 Composition of functions
 Compound interest
 Continuous compounding vs compounding with k periods
 Converting back and forth between logs and exponentials
 Domain
 Exponent review  negative and rational exponents
 Factoring
 Finding an appropriate viewing window
 Finding the distance between two points
 Finding the midpoint of a segment
 Finding points of intersection on the calculator
 Function notation
 Graphing piecewise defined functions
 Graphing a system of linear inequalities
 Interpreting slope
 Inverse Functions
 Quadratic Applications
 Quadratic Equations and the Vertex Formula
 Simplifying using powers of i
 Solving absolute value equations and inequalities
 Solving exponential equations
 Solving logarithmic equations
 Solving equations using the quadratic formula
 Solving equations with rational expressions
 Solving linear equations
 Solving literal equations
 Solving quadratic equations by square root method
 Solving using extraction of roots
 Transformations of graphs
 Vertical and horizontal asymptotes
 Zeros of polynomial functions
Joel Berman
Courses: MAT0018, MAT0028, MAT1033
Hobbies: Golf, Knitting, Riding my motorcycle
Lisa Cohen
Courses: MAT0028, MGF1106, MAC2233
Hobbies:
Abdellatif Dasser
Courses: MAP2302, MAC 2311,2312,2312, MAC2233, MAC 1105
Hobbies: Playing soccer, swimming, and reading
Jody DeVoe
Courses: MAC2311,2313, MAP2302, STA2023
Hobbies: Kayaking, fishing, dogs, reading
Jennifer Lawhon
Courses: MAT0028, MAC1105, MGF1106, STA2023
Hobbies: Running, Singing, Playing Piano
Wakeel Zainulabdeen
Courses: MAC1114, MAC2233, STA2023
Hobbies:
Luis Negron
Courses: MAT0018, MAT0028
Hobbies:
Kurt Overhiser
Courses: MAC 1105, MAC 2311, MAC 2312, MHF 2300
Hobbies: traveling, snorkeling, eating out at new trendy restaurants
Jolene Rhodes
Courses: MAC1140, MAC2312, Intensive Algebra
Hobbies: Painting, Bowling, Crafting
Amanda Saxman
Courses: MAT0028, MAT1033, MAC1105, MAE2801
Hobbies: swing dancing, tap dancing, singing, reading
Sylvana Vester
Courses: MAC1105, MGF1107, STA2023
Hobbies:
MGF1106
 Combinations vs permutations
 Survey problems with Venn diagrams
 How to use ztables
 Truth tables
 Geometry  when to use what.
 Distinguishing between counting problems and probability problems
 Euler diagrams
 Probabilities: And vs Or
 Shading Venn Diagrams
 Union vs intersection
 Negations of "all" and "some"
Cathy Ferrer
Courses: MAT1033, MAC 1105, MAC1140, MAC1114, MAC2311,2312, MGF1106,1107, STA2023
Hobbies: Pottery, Painting, Card Making, Orchids, Bowling
MGF1107
 Percents
 Simple Interest
 Compound Interest
 Finance Problems Using the Finance Menu on the Calculator
 Modular arithmetic
 Check digit problems
 Intro to Graph Theory
 Greedy algorithm
 Euler Paths and Circuits
 Traveling Salesman and Hamilton Circuits
 Brute Force Method and Nearest Neighbor Method
 Euler's formula: Like "How many V and E does an icosahedron have?
 Voting methods
Cathy Ferrer
Courses: MAT1033, MAC 1105, MAC1140, MAC1114, MAC2311,2312, MGF1106,1107, STA2023
Hobbies: pottery, painting, card making, orchids, bowling
James Lang
Courses: MAC2311,2312, 2313 MAP2302, STA2023, MAC1114, MGF1107
Hobbies: Fishing, nerding, racquetball, basketball
STA2023
 5number summary
 Box Plots
 Categorical vs Quantitative data
 Confidence interval interpretations
 Confidence intervals for proportions
 Correlation and scatterplots
 Describing a distribution
 Distinguishing between proportion and mean problems
 Dot Plots
 Explanatory and Response variables
 Finding normal percentiles
 Finding an xvalue given a percentile
 Histograms
 Hypothesis Testing (using pvalues)
 Making decisions with Hypothesis test
 Marginal and Conditional distribution
 Regression Line
 Sampling distributions for proportions
 Sampling distributions for means
 Scatter plots, correlation and describing associations
 Shifting and rescaling data
 Stem and Leaf Plot
 Summarizing the center and spread of data
 When to use correlation
 When to use s / √
n
 Understanding/finding a proportion and/or percent
 zscores
Calculator Tutorials (TI83/TI84)
 Entering data into the calculator
 Histograms
 Finding mean, sd, and 5number summary
 Regular Boxplot
 Modified Boxplot
 Entering 2variable data/scatter plot/least squares regression line/correlation coefficient
 Using the normalcdf function on the calculator
James Lang
Courses: MAC2311,2312, 2313 MAP2302, STA2023, MAC1114, MGF1107
Hobbies: Fishing, nerding, racquetball, basketball
Sylvana Vester
Courses: MAC1105, MGF1107, STA2023
Hobbies:
Wakeel Zainulabdeen
Courses: MAC1114, MAC2233, STA2023
Hobbies:
MAC2233
 Algebraic manipulation skills
 Applications of derivatives
 Applications of exponential functions
 Applications of integrals
 Average rate of change
 Compound interest
 Continuity of functions
 Derivatives
 Domain
 Equations of lines
 Exponent review with negative and rational exponents
 Factoring methods
 Finding derivatives
 Finding derivatives using limit definition
 Finding equations for exponential curves
 Finding limits
 Finding relative minimum or maximum using first derivative test
 Indefinite integrals
 Infinite limits
 Intervals
 Linear functions
 Obtaining demand or supply functions and relations to cost, revenue and profit.
 Quadratic functions
 Solving exponential equations
 usubstitution for integrals
Lisa Cohen
Courses: MAT0028, MGF1106, MAC2233
Hobbies:
Sidra Van De Car
Courses: MAC2233, MAC2311, 2312, MAP2302
Hobbies:
Wakeel Zainulabdeen
Courses: MAC1114, MAC2233, STA2023
Hobbies:
Abdellatif Dasser
Courses: MAP2302, MAC 2311,2312,2312, MAC2233, MAC 1105
Hobbies: Playing soccer, swimming, and reading
MAC1140
 Adding and subtracting fractions and rational expressions review
 Applications of exponential functions
 Applications of linear functions
 Completing the square
 Complex numbers
 Composition of functions
 Compound interest
 Deciding whether (xk) is a factor of a polynomial
 Determinant of 3x3
 Determining odd and even functions
 Difference quotient/average rate of change
 Evaluating logarithms
 Exponent review with negative and rational exponents
 Exponential functions
 Factoring
 Finding a polynomial that satisfies given conditions
 Finding equations for exponential curves
 Finding the distance between two points
 Finding the equation of a circle
 Finding the midpoint of a segment
 Gaussian elimination
 Graphing rational functions
 Inequalities
 Intervals of increasing/decreasing
 Inverse functions
 Logarithmic functions
 Onetoone functions
 Optimization
 Piecewise functions
 Polynomials
 Quadratics
 Radicals
 Rational zero theorem
 Remainder theorem
 Simplifying using powers of i
 Solving absolute value equations and inequalities
 Solving equations using substitution
 Solving exponential equations
 Solving linear equations
 Solving logarithmic equations
 Solving quadratic equations by square root method
 Solving rational equations/inequalities
 Solving equations with noninteger exponents like x2/3 or x2
 Synthetic division
 Transformations of graphs
 Writing the complete factored form of f(x) given that k is a zero
 Writing the equation of a circle in standard form
 Zeros of polynomial functions
Joel Berman
Courses: MAT0018, MAT0028, MAT1033
Hobbies: Golf, Knitting, Riding my motorcycle
Abdellatif Dasser
Courses: MAP2302, MAC 2311,2312,2312, MAC2233, MAC 1105
Hobbies: Playing soccer, swimming, and reading
Joshua Guillemette
Courses: MAT0018, MAT0028, MAT1033
Hobbies: NASCAR, Chess, and Reading NonFiction
Alison Hammack
Courses: MAT0018, MAT0028, MAT1033
Hobbies: Parenting sons, Family adventures, Horses
James Lang
Courses: MAC2311,2312, 2313, MAP2302, STA2023, MAC1114, MGF1107
Hobbies: Fishing, nerding, racquetball, basketball
Luis Negron
Courses: MAT0018, MAT0028
Hobbies:
Jody De Voe
Courses: MAC2311,2313, MAP2302, STA2023
Hobbies: Kayaking, fishing, dogs, reading
Jolene Rhodes
Courses: MAC1140, MAC2312, Intensive Algebra
Hobbies: Painting, Bowling, Crafting
Sidra Van De Car
Courses: MAC2233, MAC2311, 2312, MAP2302
Hobbies:
Wakeel Zainulabdeen
Courses: MAC1114, MAC2233, STA2023
Hobbies:
MAC1114
 Converting degrees to degreesminutesseconds
 Converting degreesminutesseconds to degrees
 Degrees vs. Revolutions
 DoubleAngle Identities
 Evaluating trigonometric functions
 Evaluating inverse trigonometric functions
 Expressing infinite solutions for trigonometric equations
 Finding exact values of trigonometric functions
 Finding the equation given a sine or cosine graph
 Finding the measure of the central angle given the circumference
 Finding the other trigonometric solution
 Finding the radian measure of a central angle subtended by an arc
 Graphing y = Asin(Bx + C) + k
or y = Acos(Bx + C) + k
 Laws of Sines: The Ambiguous Case
 Linear and angular velocity
 Locating angles greater than 1 revolution (like 15π/7 or 1020°)
 Polar Coordinates
 Radians to Degrees conversion
 Reference angles
 Reducing fractions with π
 Signs of sine and cosine
 Simplifying expressions using fundamental identities
 Simplifying inverse functions such as cos(sin^1(¼)) exactly
 Sketching angles in standard position
 SOHCAHTOA
 Solving trigonometric equations
 Solving trigonometric equations that require using an identity
 Solving trigonometric equations
 Solving trigonometric equations that require the quadratic formula or factoring
 Solving applied triangle problems
 Solving equations with 2θ, 3θ etc.
 Sum and Difference trigonometric identities
 Unit circlespecial angles
 Using the fundamental identities to find the exact values of the remaining trigonometric functions
 Using general (coordinate) definition for nonspecial angles
 Vectors
 Verifying basic identities
 Verifying double or half angle identities
 Verifying if a point lies on the unit circle
Jody De Voe
Courses: MAC2311,2313, MAP2302, STA2023
Hobbies: Kayaking, fishing, dogs, reading
James Lang
Courses: MAC2311,2312, 2313, MAP2302, STA2023, MAC1114, MGF1107
Hobbies: Fishing, nerding, racquetball, basketball
Abdellatif Dasser
Courses: MAP2302, MAC 2311,2312,2313, MAC2233, MAC 1105
Hobbies:Playing soccer, swimming, and reading
Jim Franklin
Courses: MAC1114, MAC2311, 2312, 2313, MAP2302
Hobbies:
Joel Berman
Courses: MAT0018, MAT0028, MAT1033
Hobbies: Golf, Knitting, Riding my motorcycle
Kurt Overhiser
Courses: MAC1105, MAC2311, 2312, MHF2300
Hobbies: traveling, snorkeling, eating out at new trendy restaurants
Sidra Van De Car
Courses: MAC2233, MAC2311, 2312, MAP2302
Hobbies:
Sylvana Vester
Courses: MAC1105, MGF1107, STA2023
Hobbies:
Wakeel Zainulabdeen
Courses: MAC1114, MAC2233, STA2023
Hobbies:
MAC2311
 Area between curves
 Chain Rule
 Continuity of functions
 Derivatives and Concavity
 Evaluating limits using squeeze theorem
 Exponent review  negative and rational exponents
 Finding areas using antiderivatives
 Finding derivatives
 Finding derivatives using the limit definition
 Finding limits
 Finding relative minimum or maximum
 Horizontal asymptotes
 Implicit Differentiation
 Indefinite integrals
 Infinite limits
 Instantaneous Rate of Change (1st and 2nd derivatives)
 Max/Min Applications
 Related Rates
 Review of Riemann Sum
 usubstitution
 Volumes with Cylindrical shells
 Volumes with Disks and Washers
 Vertical asymptotes
Abdellatif Dasser
Courses: MAP2302, MAC 2311,2312,2313, MAC2233, MAC 1105
Hobbies: Playing soccer, swimming, and reading
Jody De Voe
Courses: MAC2311,2313, MAP2302, STA2023
Hobbies: Kayaking, fishing, dogs, reading
Jim Franklin
Courses: MAC1114, MAC2311, 2312, 2313, MAP2302
Hobbies:
Kurt Overhiser
Courses: MAC 1105, MAC 2311, MAC 2312, MHF 2300
Hobbies: traveling, snorkeling, eating out at new trendy restaurants
Jolene Rhodes
Courses: MAC1140, MAC2312, Intensive Algebra
Hobbies: Painting, Bowling, Crafting
Sidra Van De Car
Courses: MAC2233, MAC2311, 2312, MAP2302
Hobbies:
MAC2312
 Application of integration to fluid pressure
 Area in polar coordinates
 Comparison test
 Conditional convergence vs absolute convergence
 Derivatives
 Exponential functions
 Finding a formula for the inverse function
 Finding a Maclaurin series for a function
 Integration with trignometric substitution
 Integration using Partial Fractions
 Sequences vs series
 uSubstitution
 Use power series to estimate an integral
 Write a power series using combinations of basic series
 Writing Taylor polynomials
Abdellatif Dasser
Courses: MAP2302, MAC 2311,2312,2312, MAC2233, MAC 1105
Hobbies: Playing soccer, swimming, and reading
James Lang
Courses: MAC2311,2312, 2313 MAP2302, STA2023, MAC1114, MGF1107
Hobbies: Fishing, nerding, racquetball, basketball
Jim McCloskey
Courses: MAC1105, MAC1114, MAC2311, 2312, MAP2302
Hobbies:
Jolene Rhodes
Courses: MAC1140, MAC2312, Intensive Algebra
Hobbies: Painting, Bowling, Crafting
Sidra Van De Car
Courses: MAC2233, MAC2311, 2312, MAP2302
Hobbies:
Wakeel Zainulabdeen
Courses: MAC1114, MAC2233, STA2023
Hobbies:
MAC2313
 Applications of triple integrals
 Chain rule for functions of two variables w/ one independent variable
 Chain rule for functions of two variables w/ two independent variables
 Computing partial derivatives algebraically
 Continuous functions of two variables
 Converting equations from rectangular to cylindrical form
 Converting equations from cylindrical to rectangular form
 Converting equations from rectangular to spherical form
 Converting equations from spherical to rectangular
 Differential of a function of two variables
 Directional derivatives
 Domain of a function of two variables
 Double integrals
 Equation of the tangent plane to a surface of a function of two variables
 Estimating partial derivatives
 Evaluating a line integral over a curve
 Evaluating the double integrals by converting to polar coordinates
 Finding directions of maximum, minimum, and zero rate of change
 Finding the direction of steepest ascent
 Finding an equation of a plane
 Functions of two variables
 Gradient vector and all of its properties
 Graphing functions of two variables
 Level surfaces
 Limit of a function of two variables
 Linear approximation to a function of two variables
 Linear functions of two variables
 Making contour diagrams
 Parametric equations
 Spherical coordinates
 Triple integrals
 Vectors
Jody DeVoe
Courses: MAC2311,2313, MAP2302, STA2023
Hobbies: Kayaking, fishing, dogs, reading
Jim Franklin
Courses: MAC1114, MAC2311, 2312, 2313, MAP2302
Hobbies:
MAP2302
 Applied first order
 Bernoulli differential equations
 CauchyEuler equations
 Determining the form of yp
 Determine behavior of solution in 2nd order linear without solving
 Determine if the differential equation is exact
 Determine if the differential equation is homogenous
 Euler's method
 Existence and uniqueness theorem for first order IVPs
 Homogeneous linear equations with constant coefficients
 Indefinite integrals
 Inverse Laplace resulting in unit step functions
 Laplace of unit step functions
 Linear dependence using Wronskian
 Linear dependence/independence
 Mixture problems
 Partial fractions
 Phase line diagrams given a sketch of y vs dy/dx
 Reduction of order differential equations
 Reduction to separation of variables
 Set up DE from a verbal statement
 Solving differential equations by separation of variables
 Solving differential equations using undetermined coefficients method: (annihilator method)
 Solving differential equations using variation of parameters
 Solving initial value problems by separation of variables
 Solving initial value problems using Laplace transforms
 Solving non homogeneous differential equations using the undetermined coefficients method
 Solving the first order differential equations using the integrating factor
 usubstitution for integrals
 Writing a piecewise defined function with unit step functions
Jim Franklin
Courses: MAC1114, MAC2311, 2312, 2313, MAP2302
Hobbies:
James Lang
Courses: MAC2311,2312, 2313 MAP2302, STA2023, MAC1114, MGF1107
Hobbies: Fishing, nerding, racquetball, basketball
Sidra Van De Car
Courses: MAC2233, MAC2311, 2312, MAP2302
Hobbies:
Abdellatif Dasser
Courses: MAP2302, MAC 2311,2312,2313, MAC2233, MAC 1105
Hobbies:Playing soccer, swimming, and reading
Graphing Calculator
 Statistics
 Entering data into the calculator
 Histograms
 Finding mean, sd, and 5number summary
 Regular Boxplot
 Modified Boxplot
 Entering 2variable data/scatter plot/least squares regression line/correlation coefficient
 Algebra
 Linear Regression
 Graphing windows
 Differential Equations
 Various Calculator Help Links (external websites)
Jody DeVoe
Courses: MAC2311,2313, MAP2302, STA2023
Hobbies: Kayaking, fishing, dogs, reading
Joel Berman
Courses: MAT0018, MAT0028, MAT1033
Hobbies: Golf, Knitting, Motorcycling
Lisa Potchen
Courses: MAT0028, MAT1033, MAC1105, MAC1114, MGF1106
Hobbies:
Cathy Ferrer
Courses: MAT1033, MAC 1105, MAC1140, MAC1114, MAC2311,2312, MGF1106,1107, STA2023
Hobbies: pottery, painting, card making, orchids, bowling
