# Larry Feldman

• ### Implementing a Joystick in Objective C: Part 2 - Duration: 8 minutes, 31 seconds.

• 1 year ago
• 46 views
This is video 2 of 2 explaining how to implement a joystick type of controller using touch gestures in Objective C.

This technique was the basis for UFO Frenzy:

https://itunes.apple.com/us/app/uf...
• ### Implementing a Joystick in Objective C: Part 1 - Duration: 14 minutes.

• 1 year ago
• 65 views
This is video 1 of 2 explaining how to implement a joystick type of controller using touch gestures in Objective C.

This technique was the basis for UFO Frenzy:

https://itunes.apple.com/us/app/uf...
• ### Geometric Series - Duration: 14 minutes.

• 3 years ago
• 68 views
This video covers Geometric Series. Please check out http://www.lfeldman.com for links to my mobile apps. My apps cover Algebra, Geometry, Probability, Statistics, Trigonometry and Calculus with hu...
• ### Geometric Sequences - Duration: 13 minutes.

• 3 years ago
• 26 views
This video covers geometric sequences.
• ### Arithmetic Series - Duration: 12 minutes.

• 3 years ago
• 33 views
This video covers arithmetic series. Please visit http://www.lfeldman.com for links to my mobile apps. Many are free!
• ### Arithmetic Sequences - Duration: 14 minutes.

• 3 years ago
• 54 views
This video covers arithmetic sequences. Look for a video about arithmetic series coming soon.
• ### iOS Objective C Game with Swipe Gesture: Part 2 - Duration: 14 minutes.

• 3 years ago
• 885 views
This is part 2 of a video tutorial that shows how to create a simple golf game using a swipe gesture. The completed game is called Bullz Eye, and it's available for free on the App Store at:

http:...
• ### iOS Objective C Game with Swipe Gesture: Part 1 - Duration: 14 minutes.

• 3 years ago
• 2,945 views
This is part 1 of a video tutorial that shows how to create a simple golf game using a swipe gesture. The completed game is called Bullz Eye, and it's available for free on the App Store at:

http:...
• ### Tangent Lines - Duration: 14 minutes.

• 3 years ago
• 74 views
This video explains how to find the equations of tangent lines to functions using calculus. Please check out http://www.lfeldman.com for links to my mobile apps. They cover Algebra through Calculus...
• ### Logarithms Part 4: Logarithmic Functions - Duration: 14 minutes.

• 3 years ago
• 56 views
This is my last video on logs where I cover graphing logarithmic functions. Please check out http://www.lfeldman.com for links to my mobile apps. They cover Algebra through Calculus with hundreds o...
• ### Inverse Functions - Duration: 13 minutes.

• 3 years ago
• 254 views
This lesson covers derivations, properties and examples of inverse functions. Please visit http://www.lfeldman.com for links to my mobile apps. My apps cover Algebra through Calculus with examples,...
• ### Compositions of Functions - Duration: 12 minutes.

• 3 years ago
• 477 views
This video covers compositions of functions. Please check out http://www.lfeldman.com for links to my mobile apps. My apps cover everything from Algebra to Calculus with examples, tutorials and sol...
• ### Santa Math - Duration: 60 seconds.

• 3 years ago
• 40 views
Ho Ho Ho!

Math can be as much fun as opening presents Christmas morning. Well, maybe not, but math can still be fun!

As a math teacher, I learned that most children who enjoy math continue to a...
• ### Function Transformations Part 2 - Duration: 13 minutes.

• 3 years ago
• 39 views
This is part 2 of the lesson on function transformations. Please visit http://www.lfeldman.com for links to my mobile apps. My apps cover Algebra through Calculus with examples, tutorials and solvers.
• ### Function Transformations Part 1 - Duration: 13 minutes.

• 3 years ago
• 149 views
This video discusses vertical and horizontal stretches and shrinks as well as reflections over the x and y axis. Please visit http://www.lfeldman.com for links to my mobile apps. My apps cover Alge...
• ### Python Program to Calculate Riemann Sums - Duration: 9 minutes, 26 seconds.

• 4 years ago
• 2,133 views
In this video, we write a Python program to calculate right, left and trapezoidal Riemann Sums.
• ### Python Program to Compute the 5-Number Summary - Duration: 9 minutes, 26 seconds.

• 4 years ago
• 199 views
In this video, I write a simple Python program that calculates the 5-number summary for 8 data points. The main purpose is to introduce the "sorted" function.
• ### Python Program to Calculate Triangle Area From Vertices - Duration: 11 minutes.

• 4 years ago
• 2,690 views
This video presents an implementation of a Python program to calculate the area of a triangle given the coordinates of each vertex.
• ### Python Program to Calculate Triangle Area Using 3 Methods - Duration: 13 minutes.

• 4 years ago
• 9,158 views
In this video, I write and test a Python program that calculates the area of a triangle using a method based on information the user has.
• ### Python Program for Compounding Interest - Duration: 13 minutes.

• 4 years ago
• 5,592 views
This video describes how to write and test a Python program that implements continuous and non-continuous compounding formulas.
• ### Custom Functions in Python - Duration: 13 minutes.

• 4 years ago
• 59 views
This video explains how to create and utilize custom functions in Python programs.
• ### Python "Tuples" - Duration: 12 minutes.

• 4 years ago
• 44 views
This video introduces and explains Python tuples.
• ### Python "For" Loops - Duration: 12 minutes.

• 4 years ago
• 54 views
This video discusses the basics of "For" loops in Python.
• ### Branching in Python - Duration: 9 minutes, 46 seconds.

• 4 years ago
• 654 views
This short video demonstrates branching in Python by creating a simple guessing game.
• ### Python Number Types, Variables, Inputs and Outputs - Duration: 14 minutes.

• 4 years ago
• 180 views
This video covers number types, variables and simple I/O (input/output) in Python.
• ### Installing Python - Duration: 4 minutes, 4 seconds.

• 4 years ago
• 319 views
This is a short video about installing Python 3.4.2 on Mac O/S 10. Some information about installing on a Windows PC is also presented.
• ### Quadratic Formula Using Python - Duration: 10 minutes.

• 4 years ago
• 804 views
This video explains how to implement the quadratic formula in Python. It does not cover imaginary solutions. It is not the most elegant implementation, but it should be easy to follow for beginners.
• ### Right Difference Quotient - Duration: 14 minutes.

• 4 years ago
• 280 views
This video explains how the RDQ (right difference quotient) is used to find the slope of a tangent line to a curve.
• ### 5 Number Summary - Duration: 8 minutes, 25 seconds.

• 4 years ago
• 920 views
This video explains how to find the 5 number summary of a set of data.
• ### Repeated Independent Events - Duration: 14 minutes.

• 4 years ago
• 655 views
This video discusses how to analyze the probability of independent events (trials) that repeat.
• ### Math Haunted House - Duration: 77 seconds.

• 4 years ago
• 127 views
Why are so many people afraid of math? Maybe it's because they had a frightening experience with it growing up!

"Math Haunted House" makes addition, subtraction, multiplication, and division fun f...
• ### Three Methods to Calculate Triangle Areas - Duration: 14 minutes.

• 4 years ago
• 50 views
This video presents 3 different ways to calculate triangle areas.
• ### Regular Polygons - Duration: 14 minutes.

• 4 years ago
• 136 views
This video explains how to analyze regular polygons.
• ### Continuous Interest Compounding - Duration: 13 minutes.

• 4 years ago
• 87 views
This video covers examples for using the continuous interest compounding formula. Please visit http://www.lfeldman.com for links to my math applications. They cover Algebra, Geometry, Probability,...
• ### Non-Continuous Interest Compounding - Duration: 15 minutes.

• 4 years ago
• 230 views
This video covers examples for using the non-continuous interest compounding formula. Please visit http://www.lfeldman.com for links to my math applications. They cover Algebra, Geometry, Probabil...
• ### Quadratic Formula Flowchart - Duration: 10 minutes.

• 4 years ago
• 12,191 views
This video presents a flowchart to implement the quadratic formula. Please note that imaginary solutions are not included here.
• ### Quadratic Formula Pseudo Code - Duration: 8 minutes, 45 seconds.

• 4 years ago
• 6,102 views
This video presents pseudo code to implement the quadratic formula. Please note that imaginary solutions are not included here.
• ### Derivation of Quadratic Formula - Duration: 10 minutes.

• 4 years ago
• 594 views
This video derives the quadratic formula by completing the square. Please visit http://www.lfeldman.com for links to my math applications. They cover Algebra, Geometry, Probability, Statistics, Pre...
• ### Math Cowboys - Duration: 76 seconds.

• 4 years ago
• 132 views
Yee Haw!

Come play the funnest math game in the West!

"Math Cowboys" makes addition, subtraction, multiplication, and division fun for children ages 6 - 11. Kids earn virtual tokens by solving ...
• ### Logarithms Part 3: Restrictions - Duration: 8 minutes, 14 seconds.

• 4 years ago
• 338 views
Restrictions. Please visit http://www.lfeldman.com for links to my math applications. They cover Algebra, Geometry, Probability, Statistics, PreCalculus and Calculus with hundreds of tutorials, exa...
• ### Logarithms Part 2: Properties - Duration: 14 minutes.

• 4 years ago
• 75 views
Log Properties. Please visit http://www.lfeldman.com for links to my math applications. They cover Algebra, Geometry, Probability, Statistics, PreCalculus and Calculus with hundreds of tutorials, e...
• ### Logarithms Part 1: Intro to Logs - Duration: 9 minutes, 31 seconds.

• 4 years ago
• 305 views
Intro to Logarithms. Please visit http://www.lfeldman.com for links to my math applications. They cover Algebra, Geometry, Probability, Statistics, PreCalculus and Calculus with hundreds of tutoria...
• ### Exponent Rules - Duration: 12 minutes.

• 4 years ago
• 287 views
Exponent Rules: learn them, live them, love them. Please visit http://www.lfeldman.com for links to my math applications. They cover Algebra, Geometry, Probability, Statistics, PreCalculus and Calc...
• ### Distance Formula - Duration: 9 minutes, 52 seconds.

• 4 years ago
• 53 views
This video presents a derivation of the distance formula. Please visit http://www.lfeldman.com for links to my math applications. They cover Algebra, Geometry, Probability, Statistics, PreCalculus ...
• ### Circus Math - Duration: 86 seconds.

• 4 years ago
• 168 views
Step right up to the most enjoyable math app on the market!

"Circus Math" makes addition, subtraction, multiplication, and division fun for children ages 6 - 11. Kids earn virtual tokens by solvin...
• ### Math Fish Tank - Duration: 2 minutes, 9 seconds.

• 4 years ago
• 244 views
Wouldn't it be great if more kids embraced math instead of feared it?

As a math teacher, I learned that most children who enjoy math continue to appreciate (and even love) math as an adult. It al...
• ### 45-45-90 Triangles - Duration: 7 minutes, 9 seconds.

• 4 years ago
• 182 views
This video derives and describes properties of 45-45-90 triangles. Please visit http://www.lfeldman.com for links to my math applications. They cover Algebra, Geometry, Probability, Statistics, Pre...
• ### 30-60-90 Triangles - Duration: 11 minutes.

• 4 years ago
• 496 views
This video derives and describes the properties of 30-60-90 triangles, an important subclass of right triangles. Please visit http://www.lfeldman.com for links to my math applications. They cover A...
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