The change of position over time is velocity.

The change of velocity over time is acceleration.

The change of acceleration over time is jerk.

And the change of jerk over time is an election.d

The change of position over time is velocity.

The change of velocity over time is acceleration.

The change of acceleration over time is jerk.

And the change of jerk over time is an election.d

*Posted by John Quintanilla on July 24, 2020*

https://meangreenmath.com/2020/07/24/a-clean-calculus-joke/

Professional conferences often feature poster sessions, and, more often than not, the poster is simply incomprehensible to somebody walking through the aisles.

So I enjoyed this article about an innovative way to bring scientific posters in the 21st century. The money quote:

“The current method is not effective in communicating research findings. For instance, in my field, we all want improvements in our life: vaccines for all diseases, easier delivery of vaccines, innovative way to finance vaccines, effective ways tackling vaccine hesitancy,” Suharlim says. “Experts are all coming to these conferences, and they have limited time to update their knowledge.”

The proof is definitely in the pudding:

Finally, here’s a YouTube video explaining the concept:

*Posted by John Quintanilla on June 29, 2020*

https://meangreenmath.com/2020/06/29/to-save-the-science-poster-researchers-want-to-kill-it-and-start-over/

We interrupt our regular programming for this quick message to the University of North Texas College of Science Class of 2020, whose graduation we had planned to celebrate this weekend.

*Posted by John Quintanilla on May 8, 2020*

https://meangreenmath.com/2020/05/08/a-quick-message-to-the-class-of-2020/

*Posted by John Quintanilla on March 30, 2020*

https://meangreenmath.com/2020/03/30/it-could-be-worse/

Source: https://www.facebook.com/CTYJohnsHopkins/photos/a.323810509981/10151128278824982/?type=3&theater

*Posted by John Quintanilla on March 13, 2020*

https://meangreenmath.com/2020/03/13/cat-cubed/

I’m taking a break from my usual posts on mathematics and mathematics education to note a symbolic milestone: meangreenmath.com has had more than 250,000 total page views since its inception in June 2013. Many thanks to the followers of this blog, and I hope that you’ll continue to find this blog to be a useful resource to you.

**Twenty most viewed individual posts:**

- All I want to be is a high school teacher. Why do I have to take Real Analysis?
- Analog clocks
- Anatomy of a teenager’s brain
- Beautiful dance moves
- Finger trick for multiplying by 9
- Full lesson plan: magic squares
- Full lesson plan: Platonic solids
- Fun with dimensional analysis
- High-pointing a football?
- Importance of the base case in a proof by induction
- Infraction
- Math behind Super Mario
- My “history” of solving cubic, quartic and quintic equations
- Sometimes, violence is the answer
- Student misconceptions about PEMDAS
- Teaching the Chain Rule inductively
- Thoughts on silly viral math puzzles
- Valentine’s Day card
- Was there a Pi Day on 3/14/1592?
- Welch’s formula

**Twenty most viewed series:**

- 2048 and algebra
- Another poorly written word problem
- Area of a triangle and volume of common shapes
- Arithmetic and geometric series
- Calculators and complex numbers
- Common Core, subtraction, and the open number line
- Computing e to any power
- Different definitions of e
- Exponential growth and decay
- Fun lecture on geometric series
- Inverse Functions
- Langley’s Adventitious Angles
- My Mathematical Magic Show
- Predicate Logic and Popular Culture
- Reminding students about Taylor series
- Slightly incorrect ugly mathematical Christmas T-shirts
- Square roots and logarithms without a calculator
- Wason selection task
- What I learned from reading “Gamma: Exploring Euler’s Constant” by Julian Havil
- Why does and ?

**Twenty most viewed posts (guest presenters):**

- Engaging students: Classifying polygons
- Engaging students: Congruence
- Engaging students: Distinguishing between axioms, postulates, theorems, and corollaries
- Engaging students: Distinguishing between inductive and deductive reasoning
- Engaging students: Equation of a circle
- Engaging students: Factoring quadratic polynomials
- Engaging students: Finding the domain and range of a function
- Engaging students: Finding x- and y-intercepts
- Engaging students: Inverse Functions
- Engaging students: Laws of Exponents
- Engaging students: Pascal’s triangle
- Engaging students: Solving linear systems of equations by either substitution or graphing
- Engaging students: Solving linear systems of equations with matrices
- Engaging students: Solving one-step and two-step inequalities
- Engaging students: Solving quadratic equations
- Engaging students: Square roots
- Engaging students: Translation, rotation, and reflection of figures
- Engaging students: Using a truth table
- Engaging students: Using right-triangle trigonometry
- Engaging students: Verifying trigonometric identities

If I’m still here at that time, I’ll make a summary post like this again when this blog has over 500,000 page views.

*Posted by John Quintanilla on July 5, 2019*

https://meangreenmath.com/2019/07/05/250000-page-views/

Another bonehead word problem. Notice the word “her”. While Usain Bolt holds the current 100-meter world record of 9.58 seconds, the women’s world record is currently 10.49 seconds.

Source: https://www.facebook.com/FloTrack/photos/a.432324889444/10156764197654445/?type=3&theater

*Posted by John Quintanilla on March 18, 2019*

https://meangreenmath.com/2019/03/18/another-poorly-written-word-problem-part-11/

I enjoyed this article from the magazine *Physics Today* about the historical background behind three-dimensional spherical trigonometry: https://physicstoday.scitation.org/doi/10.1063/PT.3.3798

*Posted by John Quintanilla on January 21, 2019*

https://meangreenmath.com/2019/01/21/trigonometry-for-the-heavens/

Somehow I found this fun website with various teaching resources using different coding and decoding methods: http://www.cimt.org.uk/resources/codes/?fbclid=IwAR2yX_yDK0UAmLB2acIgbk15wJMy_QXFJSuKaQOj3q-SlrFkuuuxpsEXoyI

*Posted by John Quintanilla on January 18, 2019*

https://meangreenmath.com/2019/01/18/codes-and-ciphers-teaching-resources-website/

Here’s another T-shirt that I found in my quest for the perfect ugly mathematical Christmas sweater: https://www.amazon.com/Fibonacci-Christmas-Tree-Holiday-Shirt/dp/B07KCF1F6D/

Unlike the shirt in my previous post, this one actually gets the first ten rows of Pascal’s triangle correct. So that’s a good thing.

There’s one small error: while the Fibonacci numbers can be found by adding along shallow diagonals of Pascal’s triangle, this really shouldn’t be called a “Fibonacci Christmas Tree.”

Oops.

*Posted by John Quintanilla on December 14, 2018*

https://meangreenmath.com/2018/12/14/slightly-incorrect-ugly-mathematical-christmas-t-shirts-part-3/