...from 2006 to the present. Github's pdf preview doesn't always show the whole file, so if you want to see the complete files, then download individual files or the whole set.

• 2006: Pendulum motion
• 2007: Tides
• 2008: Forced pendulum
• 2009: Color and vision (short)
• 2010: Why doesn't the Moon fall out of the sky?
• 2011: a = v^2/r
• 2012: Achromatic refracting optics
• 2013: Base n
• 2014: Gravity in space
• 2015: Gyroscopic motion
• 2016: Hooke's law
• 2017: Generalized binomial theorem
• 2018: Continuous Wave Radar
• 2019: Surface waves
• 2020: Eigenvalues & Eigenvectors
• 2021: Coriolis: Oceanography and Lagrange points
• 2022: -
• 2023: Bernoulli

Email me if you find any typos or technical errors. Typos are worth $0.25 each, while technical errors will net you $1.00. Rewards are arbitrated by the person who collects the most in bounties from me the previous year.

Every year, since my first kid was born, I've written up a short paper in honor of Sir Isaac Newton, on the anniversary of his birthday, December 25. I always try to incorporate some activity to do with them related to the topic of the year. The technical parts of the papers are generally written for them when they reach high school or college, although I do try to include something they can follow. This, of course, is easier to do as they learn more mathematics.