My students are making some stunning parametric and polar art. To help them, I share the wonderful website mathcurves and was pleasantly surprised when a student used a fish curve to make a fish. How cool is this curve?
mathcurve.com/courbes2d.gb...
#precalc #iteachmath #iteach #fish #parametric
Incredible
Awesome! Can you share a bit about how you used Excel to make this?
This is great! Where can I find more problems like this?
Math teaching prep highlight: having blue and red colored math expressions combine and mix to purple!
…I spend too much time on this stuff, but I share the intent with students and it makes them laugh.
#iteachmath
#edusky
#mathsky
This work is really impressive. Thanks for sharing!
Any thoughts on a precalculus spirograph project? I'd love to start working on one!
#mtbos
#iteachmath
#mathsky
#edusky
Tomorrow, I get to help students analyze epicycloids and hypocycloids! Here we come spirographs! I am including the graphs they get for reference (I had fun making them on Desmos!)
epi: www.desmos.com/calculator/j...
hypo: www.desmos.com/calculator/f...
#desmos
#iteachmath
#mathsky
11
Polygonal sine waves. I love this and am excited to show it to students. It helps students recognize that the trig we cover in school is just the beginning.
#iteachmath
#edusky
#mtbos
www.tumblr.com/1ucasvb/4288...
Ah!! Got it. Do you ever use other notation for this?
Sometimes I do T(-2,3) or something similar. I even have students use arrows as well, like ⬅️2, ⬆️3…
Great idea.
What does the notation in column 3 represent?
That is great. I’m going to try this!
Happy Monday everyone!
The product to sum trig identities are awesome!
I find it amazing that sine and cosine waves combine in these ways and love that we can tie it back to the sin(A+B) and cos(A+B) identities for students. Wow!
#trig
#mathsky
#edusky
#MtBoS
Tried the prompt below before showing sinusoids in a Ruben's tube. Then we watched this quick video: youtu.be/_8KjE7MQHXM?...
I want to convince students that anything that oscillates might be modeled with a sinusoid. They are everywhere!
#mtbos
#iteachmath
#edusky
#mathsky
Great idea, I’m thinking to reverse the numbers next and then repeat for Geometric and Harmonic sequences! Gonna use this for sure!
The expression (2x+1)/5 between -4 and 4, so the interval for the expression (2x + 1)/ 5 is less than 8, but the interval for x is less than 19/2 + 21/2 = 40/2 = 20:
?/5 > -4 when ? > -20, so 2x + 1 > -20 and x > -21/2
?/5 < 4 when ? < 20, so 2x + 1 < 20 and x < 19/2
I posted this a while ago, but this is still my favorite way to prove the addition identities for trig. What are your favorite approaches?
#MtBos
#MathSky
#IteachMath
Exploring Islamic Constructions in Geometry and am considering incorporating Geogebra!
Here is the 12-pointed star with a focus on dynamic color. Thinking about what else students might like to do!
#Mathsky
#iTeachMath
#Geogebra
www.geogebra.org/m/vngxfcfy
I used Spinning Wheels and the kids laughed out loud. It was just too goofy and perfect. Good call!
What a great choice. I will use this for something in class for sure!
Great choice. Especially with the black background!
You know…that is so perfect. I am going to use it. I’ve just got make just theta spins to the beat!
I love spinning the functions around the unit circle! I will show this one in class and find it relaxing to watch. The only question is, what song should I play as we spin the circle?
#iteachmath
#mathsky
#MtBoS
Video: www.youtube.com/watch?v=ASC2... Graph: www.geogebra.org/m/kutagxpj
That is lovely!!
I love that!
Teaching trig on the xy plane and “All Students Take Calculus” came up. I’m ready for a new phrase. I’ll have a contest with my students to create their own phrases.
Any ideas?
#iteachmath
#edusky
#MtBoS
#trigonometry
Wow. Just wow!
As a person who makes sure to carry tissues at all times, I am glad you have something that doesn't make you sneeze!
Anyone else still using chalk? I am one of the last at my high school and love it.
If only I had sliding boards…one can dream.
#hagoromo
#iTeachMath
#MathSky
