# triangle exteriorangle geometry iteachmath math maths edtech msmath hsmath proof geomchat mathchat trigonometry trig algebra 3d augmentedreality calculus stem steam calc3 mathematics secondgrade nctm apcalc ncsmsd2019 mathequity nctmsd2019 nctmannual abelincoln ios nyc geogebra ldsb patterns patternblocks symmetry familymath mathathome tmwyk shotonipadpro collegemath figurethat

Dynamic & Modifiable Illustrator (w/o words) Not sure why many texts make this into such "thing" (by calling it a corollary or another theorem). Isn't the original theorem good enough?🤔 https://t.co/9L3SvzdyLS

14 38
2019-05-08

Sum of Measures of a Polygon's Exterior Angles: Alternate modifiable & dynamic illustrators. Explore here: https://t.co/zXdRkaQEym.

7 17
2019-05-03

Equilateral Triangle to 30-60-90 Triangle (w/o words). resource includes key guiding Qs for Ss: https://t.co/mP2kbI1PJz.

45 97
2019-04-30

Similarity in Right Triangles: Exploration & Discovery w/Key Qs for Ss: https://t.co/Tm8i9UPsgP. What relationships are shown here? (T/Y to for her suggestions to improve https://t.co/QZzxluxqsJ).

19 50
2019-04-29

Polygon Angle Theorems: N = 3 (triangle) through N = 8 (octagon). Dynamic & modifiable illustrators (w/o words): https://t.co/9rPS0hGhQs. (BGM: ).

48 125
2019-04-29

Looks like -dabbling is starting to grow on me. 🙂 What theorem is being illustrated here? Dynamic & modifiable: https://t.co/2zHDDNMnvW.

2 16
2019-04-19

Plotting Points using SPHERICAL COORDINATES: Dynamic & modifiable illustrator. Created in GC & explored here in Explore here: https://t.co/ot1Nz4F4xM.

5 12
2019-04-13

Today we tried & ’s skeeball problem. They ❤️‘d it. I ❤️’d the variety of ways they organized their thinking 🤔 They know they can find more ways & R going 2 work on it at home 💕🌟

4 18
2019-04-11

Ts: For those Ss who need a little more of a challenge 🙂: Given the base of this solid = circle of radius R, & cross sections shown here are regular hexagons, express the VOL of this solid WRT R. https://t.co/wptjdzXTxG

6 16
2019-04-09

How will you approach your mathematicians Monday? Thank you & ❤️💡🎾 I loved the story, Infinity & Me. I’m going to try this in 2nd. I changed the numbers, and I’m going to ask them to reflect too.

1 4
2019-04-05

Create your own solid: Cross sections || yAxis = regular hexagons. Upper & lower FNS & boundaries all modifiable . Explore here: https://t.co/wptjdzXTxG. Made w/ GC (now w/#AugmentedReality 😀!)

3 6
2019-04-04

surface of REV with ‘s profile = cross sec: https://t.co/TzBZ4BA706. Created in GC w/#AugmentedReality. This app takes modeling to a whole new level! For lesson ideas: https://t.co/TMVhZHfdgO (#iOS) & https://t.co/iNiQ9LufNQ

4 13
2019-03-30

SAT 3/30 = day at ! If you're near stop by and EXP this fun museum! We'll have several sessions (some for Ts & || ones for non-Ts) WRT using apps (GC, with modeling, & more! https://t.co/9gg5satmJp

5 10
2019-03-28

Sometimes it’s nice to think about how patterns grow, where they grow from, and if through their changes they might come to a limit.

8 36
2019-03-27

Basic point plotting (x, y, z) & solid construction exercise in GC : Solids have = radii & height = 2*radius. And with Ss can VIRTUALLY TEST the accuracy of their models! 🙂 beta demo .

19 73
2019-03-20

And an arctan(1) & an arctan(2) & an arctan(1), arctan(2), arctan(3): HAPPY PI DAY!!! 😃 https://t.co/8BatAzK6Uj

2 4
2019-03-14

Any 1 Quadrilateral + Bisectors of its 4 Exterior Angles = 😮? How can we formally prove what is dynamically illustrated here? 🤔 (Source: ). https://t.co/27521S487E.

5 12
2019-02-25