Below are what I consider my most interesting posts and post series.
Take Drugs, Do Math – personal
Squares as Products of Squares – number theory
Revenge of the Squares – geometry
• Squares Again
• Revenge of the Squares, Part 1
• Revenge of the Squares, Part 2
Practicing Math – musings
Squares as Sums of Odd Numbers – number theory
• Squares as Sums of Odd Numbers, Part 1
• Squares as Sums of Odd Numbers, Part 2
Rational-a-Rama – number theory
• About Division
• Jiggety Jig
• Rational-a-Rama
• Conic Completion Day
Stewart’s Calculus – personal
Parallel and Perpendicular Lines – coordinate geometry
• Parallel Lines
• Perpendicular Lines
Digit Sums – number theory
• More Notebook Archeology
• Elegance and Regret
• More Digit Sums
Parabola-a-Go-Go – conics and trigonometry
• Unfocus Meets Focus
• Parabolic Reflections
• Parabola-a-Go-Go, Part 1
• Parabola-a-Go-Go, Part 2
• Parabola-a-Go-Go, Part 3
• Parabola-a-Go-Go, Part 4
Ludare est Orare – musings
Dawdler’s Triangle – geometry
• Ptolemy’s Theorem and Others
• Groundwork
• Before and After
• Easy Lemmas
• Angles and Arcs
• The Proof at Last
Fun with Logarithms – number theory
• Fun with Logarithms
• Less Fun with Logarithms
Parabola Magic – coordinate geometry
Interchangeable Functions – algebra
• Olly Returns
• Can’t Live With ‘Em…