# mtbos iteachmath math maths trig trigonometry precalc mathchat hsmath collegemath bozoky ivanffy women art artist akvarell home house goinghome aquarelle mixedtechnique watercolor penandink drawing contemporary magyar hungarian fineart arte artcollector ai640 cpchat administrator principal educhat langrudolf aquatint bird stroll painter festomuvesz ivanffyuhler museum london budapest geometry figurethat antique earlyed edchat proof triangle theorem msmath trianglesurprise sel designthinking artsed adedu tlchat edtechchat gifs storytelling diesol funfact edutwitter backtoschool futurereadylibs iowatl futureready

sin(2v) = 2*sin(v)*cos(v): Dynamic & modifiable illustration using equal areas. For a quick investigation for Ss (w/o ID appearing at the end): https://t.co/hIaGZcseR3.

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2019-09-09

announces a new SEL course for educators to help support the demands of today’s classroom. Learn more: https://t.co/Jb0sqbOmTH

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2019-09-04

Started creating a set of tutorial cards for Arcade. Folder here: https://t.co/0j8pDS8nRw These first ones are for our Game design & Coding club starting tomorrow. I'll be adding more weekly as they learn it. Help yourself if the cards are useful

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2019-09-03

Here, a animation of 's problem posed earlier this week: https://t.co/bTIh6QYMcT.
How can we formally prove the sum of these 2 square areas = 4*R^2, no matter where the large points lie? 🤔

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2019-08-30

Lalilo is a fun free online tool for kindergarten, 1st, and 2nd grade teachers and students https://t.co/kErWMaZLgU

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2019-08-28

Inspired by : For any RT, build a rectangle off its HYP so ratio of its L to W = 1:2. What is the measure of the pink angle? More importantly, WHY does this value NEVER CHANGE? https://t.co/wl2ZOWg42N

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2019-08-25

SSS (Side-Side-Side) Congruence Dynamic via Transformational SAS & 1 other theorem. Question: Which one? 🤔 https://t.co/bdKZuzNJXK.

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2019-08-23

When we build equilateral triangles off 2 sides of ANY TRIANGLE, another equilateral triangle surprisingly emerges! 😮 Why does this occur? 🤔Source: . Created with : https://t.co/lTfrId4Hik.

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2019-08-16

How has flexibility provided motivation for you and others?

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2019-08-15

Similarity in Right Triangles: Dynamic Illustrations w/o Words. Created with : https://t.co/Tm8i9UPsgP. Shout out to for her suggestions to help me improve this 1st version: https://t.co/QZzxluxqsJ.

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2019-08-13

Great day unpacking arts pedagogies with Knox Grammar, and then jumping in to model some of these ideas with students. 😍

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2019-08-12

Use the free Juxtapose website to compare two pieces of similar media by using the interactive slider! Embeds right into websites! Great for student project use! https://t.co/AnAWrNneA3

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2019-08-09

Hello friends! I'm stoked to announce my NEW podcast with focusing specifically on EdTech in ESL. It's called The Podcast and we hope you'll listen, subscribe, RT... All the things! Available now at https://t.co/SbCiC5Ps40

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2019-08-05

The common external tangent segment connecting any 2 tangent circles has a length equal to the GEOMETRIC MEAN of the radii of both circles. 😯 How to prove? 🤔(Source: ). https://t.co/3RwqD4ki5M

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2019-08-05

Here, we have a right triangle with its incircle, excircle, & points of tangency to be shown. How can we prove the collinearity among the 3 points (shown at the end)? (Source: ). https://t.co/CGNxP7i5Hz

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2019-07-30

3 Reasons to Read Illuminate Before School Starts - Teaching with Technology https://t.co/jtCmPFf5Nl

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2019-07-28

Here's a SUPER FUN Back-to-School idea for libraries and classrooms!

Bookmarks for Read how you can create these for your students to share information & news too. https://t.co/r5Pim9bhkO

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2019-07-17