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MATH 141 – GOODIES
FOR CHAPTER 4 (MIDTERM 3)
FREE ONLINE GRAPHERS!
DESMOS
• See GOODIES FOR
CHAPTER 0 for instructions.
GEOGEBRA
(This has more with 3D
graphing.
Try: z = x^2 + y^2 and
x^2 + y^2 + z^2 = 1)
• Pi Day (3/14) and The Simpsons
https://twitter.com/TheSimpsons/status/1503531521977860097
OR
https://tenor.com/view/simpsons-i-ate-some-pie-math-joke-homer-gif-9289728
OR
https://www.reddit.com/r/math/comments/37giey/simpson_s_math_joke/?rdt=48610
• Trig in Cartoons
Family Guy
https://www.youtube.com/watch?v=zpxs5Wif5Pk
Tom and Jerry
https://www.youtube.com/shorts/_QiTwRHSvLg
• 4.1: Angles: Radians vs. Degrees
Don’t have nightmares!
https://www.rodhirejab.com/integration-trigonometry-sin-cos-multiply-part-9/
or
https://www.facebook.com/Midsci/photos/a.10150444384710258/10165749075730258/?type=3&locale=ms_MY
Degrees and Base 60
“You’re Being Obtuse / Acute” (Family Guy).
Start at 3:28.
https://www.youtube.com/watch?v=AmxKeuZigQI
Original from The Shawshank Redemption.
Start at 0:39.
https://www.youtube.com/watch?v=I7wREOySaxU
• 4.2-4.4: Basic Trig
Basic Trig Identities (also handed out in class)
http://www.kkuniyuk.com/TrigBasicIDsAnyClass.pdf
Visualizing Trig Functions
http://www.kkuniyuk.com/TrigSixParts.pdf
AND a video:
sin joke
https://ifunny.co/picture/z-psst-want-an-apple-eve-no-thanks-i-don-fhg3nK5S6
• 4.2-4.4: Pythagorean Theorem
Visual proofs (like tangrams)
https://www.facebook.com/IloveMathematics91/videos/214886506108934/
Wikipedia
https://en.wikipedia.org/wiki/Pythagorean_theorem#
with another proof
About Pythagoras - fun but may induce seizures!
https://www.youtube.com/watch?v=X1E7I7_r3Cw
The Wizard of Oz and The Simpsons do incorrect versions
https://www.youtube.com/watch?v=uCOxU2rKLas
and a mathematician takes a deep dive:
https://www.youtube.com/watch?v=w4zqR7GhrqQ
Pythagoras and Einstein fighting over c^2:
Pythagoras and Social Distancing:
https://www.reddit.com/r/MathJokes/comments/jx5zgh/pythagorean_social_distancing/
• 4.2-4.4: Pythagorean Identities
The Big Bang Theory
http://www.quickmeme.com/meme/5q5m
more STEM memes
https://www.facebook.com/IFLScience/photos/a.456449604376056/480236188664064/?type=3
• 4.5: Graphing Trig Functions
From 1.3: Angry dancer: (end of row 2 should be
x^2 + y^2 = r^2)
https://www.millenniumhs.org/site/Default.aspx?PageID=1167
Aperiodic function (Homer’s heart attack from The
Simpsons)
https://www.youtube.com/watch?v=n8K0p7Brq7E
• 4.6: Graphing More Trig Functions
Tan line
The “up-U” and “down-U” graphs for cosecant and secant:
https://www.youtube.com/watch?v=hpigjnKl7nI
Transformed cosecant and secant functions have graphs
like remoras to guide graphs:
https://www.youtube.com/watch?v=yzDWWzDenZQ
• 4.7: Inverse Trig Functions
Restricted sine function vs. Inverse sine function
http://www.kkuniyuk.com/PrecalcBook/0407InverseSine.pdf
Restricted tangent function vs. Inverse tangent function
http://www.kkuniyuk.com/PrecalcBook/0407InverseTangent.pdf
It’s actually inverse sine!
https://www.reddit.com/r/funny/comments/63iyuh/whats_your_nerdy_pick_up_line/
• 4.7 and 5.3: Solving Basic Trig Equations
Factoring reminder
http://www.kkuniyuk.com/PrecalcBook/0407FactoringExample.pdf
Solving a trig equation over various intervals
http://www.kkuniyuk.com/PrecalcBook/0407TrigEquation.pdf
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