A collection of lectures, talks, LEGO creations and more. Delivered by Steve Butler, an instructor of mathematics and lover of fun things.

More information about Steve can be found online at: https://www.stevebutler.org/

Solutions to practice exam 2 (Calc 3; Fall 2025)
1:44:15
Solutions to practice exam 2 (Calc 3; Fall 2025)
Applications of Gauss-Jordan and matrices (Finite math; Lecture 23; Fall 25)
49:26
Applications of Gauss-Jordan and matrices (Finite math; Lecture 23; Fall 25)
Changing order of integration (Calc 3; Lecture 3-2; Fall 25)
51:52
Changing order of integration (Calc 3; Lecture 3-2; Fall 25)
Gauss-Jordan elimination (Finite math; Lecture 22; Fall 25)
50:08
Gauss-Jordan elimination (Finite math; Lecture 22; Fall 25)
Basics of integration (Calc 3; Lecture 3-1; Fall 25)
37:39
Basics of integration (Calc 3; Lecture 3-1; Fall 25)
Lagrange multipliers -- bonus problem (Calc 3; Lecture 2-9; Fall 25)
8:59
Lagrange multipliers -- bonus problem (Calc 3; Lecture 2-9; Fall 25)
Calc 2, Exam 2 walkthrough (Spring 2025)
1:11:21
Calc 2, Exam 2 walkthrough (Spring 2025)
Calc 1, Exam 2 walkthrough (Spring 2025)
1:02:23
Calc 1, Exam 2 walkthrough (Spring 2025)
Calc 3, Exam 2 walkthrough (Spring 2025)
1:15:00
Calc 3, Exam 2 walkthrough (Spring 2025)
Lagrange multipliers (Calc 3; Lecture 2-9; Fall 25)
49:57
Lagrange multipliers (Calc 3; Lecture 2-9; Fall 25)
Augmented matrices (Finite math; Lecture 21; Fall 25)
47:13
Augmented matrices (Finite math; Lecture 21; Fall 25)
Absolute max and min (Calc 3; Lecture 2-8; Fall 25)
48:29
Absolute max and min (Calc 3; Lecture 2-8; Fall 25)
Two equations and two unknowns (Finite math; Lecture 20; Fall 25)
44:31
Two equations and two unknowns (Finite math; Lecture 20; Fall 25)
Practice 2-B problems for Calculus 3 (Fall 2025) -- Taylor polynomials and friends
1:41:54
Practice 2-B problems for Calculus 3 (Fall 2025) -- Taylor polynomials and friends
Critical points; Second partials test (Calc 3; Lecture 2-7; Fall 25)
43:09
Critical points; Second partials test (Calc 3; Lecture 2-7; Fall 25)
Practice for Exam 2 = Functions and financial math (Finite math; Fall 25)
1:23:29
Practice for Exam 2 = Functions and financial math (Finite math; Fall 25)
Taylor polynomials (Calc 3; Lecture 2-6; Fall 25)
47:53
Taylor polynomials (Calc 3; Lecture 2-6; Fall 25)
Annuities, part 2 (Finite math; Lecture 18; Fall 25)
45:40
Annuities, part 2 (Finite math; Lecture 18; Fall 25)
Properties of the gradient; tangent planes to implicit surfaces (Calc 3; Lecture 2-5; Fall 25)
46:38
Properties of the gradient; tangent planes to implicit surfaces (Calc 3; Lecture 2-5; Fall 25)
Annuities, part 1 (Finite math; Lecture 18; Fall 25)
47:17
Annuities, part 1 (Finite math; Lecture 18; Fall 25)
Implicit differentiation; gradient; directional derivative (Calc 3; Lecture 2-4; Fall 25)
47:54
Implicit differentiation; gradient; directional derivative (Calc 3; Lecture 2-4; Fall 25)
Annual Percentage Yield = APY (Finite math; Lecture 17; Fall 25)
42:21
Annual Percentage Yield = APY (Finite math; Lecture 17; Fall 25)
Practice 2-A problems for Calculus 3 (Fall 2025) -- partial derivatives and friends
1:50:39
Practice 2-A problems for Calculus 3 (Fall 2025) -- partial derivatives and friends
Differentiability; tangent plane; chain rule (Calc 3; Lecture 2-3; Fall 25)
47:37
Differentiability; tangent plane; chain rule (Calc 3; Lecture 2-3; Fall 25)
Compound interest (Finite math; Lecture 16; Fall 25)
45:30
Compound interest (Finite math; Lecture 16; Fall 25)
Diff Eq, Exam 1 walkthrough (Spring 2025)
1:02:30
Diff Eq, Exam 1 walkthrough (Spring 2025)
Partial derivatives (Calc 3; Lecture 2-2; Fall 25)
46:35
Partial derivatives (Calc 3; Lecture 2-2; Fall 25)
Simple interest (Finite math; Lecture 15; Fall 25)
51:50
Simple interest (Finite math; Lecture 15; Fall 25)
Logarithmic functions (Finite math; Lecture 14; Fall 25)
48:28
Logarithmic functions (Finite math; Lecture 14; Fall 25)
Solutions to practice exam 1 (Calc 3; Fall 2025)
1:18:20
Solutions to practice exam 1 (Calc 3; Fall 2025)