Math Links for Week Ending Nov 13, 2026

Featured Links

I love seeing things I never new before, especially from one of my favourite topics - projectile motion
Curriculum Tags: MPM2D, MFM2P, MCR3U, MCF3M, MBF3C
https://x.com/themathpulse/status/2119128874177221018

The Safety Parabola Fire a cannon at the same speed at every angle and each shell draws its own parabola. Together they fill a region with a sharp edge: another parabola, y = v²/(2g) − g x²/(2v²). Every shell touches this curve exactly once and none crosses it. Anything outside it is completely safe. This is the safety parabola, first described by Evangelista Torricelli in the 1640s. On flat ground the farthest shot is at 45°. Move the cannon to a 15 m cliff and the best angle drops to 40.4°, because the shell has more time to fall. The general answer is tan θ = v / √(v² + 2gh), and it needs no calculus once you see the envelope.

— Math Pulse (@themathpulse) November 7, 2026

Resource Links

November classic NCTM problems
Curriculum Tags: All
https://karendcampe.wordpress.com/2026/11/01/november-calendar-problems-4/

November Calendar of Problems is posted! Try some #ProblemSolving w/your students or yourself. Share your thinking here or on the post. Some very cool #geometry Qs this month! #iTeachMath #MTBoS #T3Learns #MathChat #RecreationalMath https://t.co/yBz3MMv9Vy

— Karen Campe (@KarenCampe) November 2, 2026

Desmos Art time
Curriculum Tags: All
https://www.desmos.com/art 

It’s that time of year again. 🎨🏆 Head to desmos.com/art to learn more about the Art Contest, and be sure to submit your graphs and notebooks (!!) by January 15th, 2027! #iteachmath #mathsky #desmosart #mathart #desmos

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— Desmos Studio (@desmos.com) November 13, 2026 at 8:50 AM

Don't get fooled by pretend phenomenon dealing with the Golden Ratio
Curriculum Tags: All
https://bsky.app/profile/pauloferro.com/post/3n26ul57v5k2m

The golden ratio in the Parthenon, da Vinci’s art, and nautilus shells is mostly a myth. Its real superpower is being the "most irrational" number, which helps everything from aircraft to the human brain avoid destructive vibrations. #MathSky #ITeachMath #pauloferrocom

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— Paulo Ferro (@pauloferro.com) November 13, 2026 at 6:21 AM

Video Links

Your basic factoring quadratics lesson in a compact form
Curriculum Tags: MPM2D, MFM2P, MCR3U, MCF3M, MBF3C
https://x.com/howie_hua/status/2119557553306873918

I was at a marching band competition yesterday and two people requested a factoring quadratics video so here it is https://t.co/PkIRPx6f8P

— Howie Hua (@howie_hua) November 8, 2026

A neat patter of squares
Curriculum Tags: All
https://x.com/veritasium/status/2120137004017156212

Something strange happens if you keep squaring... #veritasium #science #math https://t.co/XmqkTwx93w

— Veritasium (@veritasium) November 10, 2026

Image Links

I love this for dealing with application of vectors
Curriculum Tags: MCV4U
https://bsky.app/profile/neechmaths.bsky.social/post/3n25imu2b2c2q

In #mathstoday I was at the TM1 Mechanics #AlevelMaths study day and had lots of fun with practical experiments like predicting the mass of these stones.

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— Hannah (@neechmaths.bsky.social) November 12, 2026 at 5:15 PM