Professor Leonard
Professor Leonard is Brandon Leonard, a math educator whose free, full-length YouTube lectures guide learners from prealgebra through calculus, statistics and differential equations.
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Latest
Brandon’s happenings, collected from public sources, plus his backstory and Starbook, where fans write.
Known for
- YouTubeCalculus 1Full lecture series · Instructor
- YouTubeCalculus 2Full lecture series · Instructor
- YouTubeCalculus 3Full lecture series · Instructor
- YouTubeDifferential EquationsLecture series · Instructor
- YouTubePrecalculus: College Algebra/TrigonometryVideo course · Instructor
- YouTubeStatisticsFull lecture series · Instructor
Overview
- Name
- Brandon Leonard
- Work
- Mathematics educator and video creator
- Education
- Mathematics degrees and a teaching credential from California State University, Fresno
- YouTube beginnings
- Channel created in August 2011
- Known for
- Free, full-length mathematics lectures organized by course
Mini bio
From the classroom.
Brandon Leonard trained in mathematics at California State University, Fresno, earning a bachelor’s degree summa cum laude, a teaching credential and a master’s degree. His teaching career has included tenured college positions. The University of Texas at Tyler identifies him with Merced College in its guide to free math resources.
A library students can return to.
His YouTube channel dates to August 2011. Its course playlists let learners work through whole subjects, from prealgebra and intermediate algebra to three levels of calculus. His 2012 introduction to limits is one of the early lessons still available. The library has grown to an audience of more than a million subscribers, and universities including Youngstown State recommend it to students.
Teaching in depth.
On Patreon, he describes a goal of teaching mathematics thoroughly and using support to create videos shared freely with the world. In 2026, he filmed statistics lessons for Peterson Academy, shared the first on YouTube and resumed adding lessons to Differential Equations.
Creditschronological, newest first
- 2026Using Euler’s Method (Differential Equations 42)Teacher and creator
- 2026Peterson Statistics Lesson 1Instructor
- 2012Calculus 1 Lecture 1.1: An Introduction to LimitsTeacher and creator
Quotes
I have a passion to teach the world mathematics.Professor Leonard, Patreon About
He explains why he makes detailed math videos and asks supporters to help fund lessons shared for free.
Trivia
- His bachelor’s degree in mathematics was awarded summa cum laude.
- Alongside mathematics, he serves as a lead teaching pastor.
- His channel also has a separate To The Point Math playlist.
Find Brandon
Follow his lessons and support the next ones.
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