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Some tired circles... at least they won’t roll away! By French artist Bernar Venet...

Froebel’s first gift: balls of yarn. Sensory experiences of lines, loops, crossings, insides, boundaries... all lures into geometry

Moiré dynamic geometry by Takahiro Kurashima. This “poemotion” turns circles into@polygons.

A compass for those who >really< like circles.

2000 BCE Assyrian circles and triangles. Our constant companions for more than four thousand years. .

For when you need a break from Platonic solids... diversity of faces so attractive...

For when you need to make a straight line on the board: unroll the string from the device, which coats it with chalk, pin to board and give the string a quick tug. Ta da! Who needs rulers anyway?

Making symmetry with some two handed rope work at the Fröbel museum in Bad Blankenburg

Bringing geometry and spaghetti together! thisiscolossal.com/2019/06/alice-…

Enjoying shooting lightning bolts from my fingertips to represent multiplication arrays using the new TouchTimes app on my iPad. touchcounts.ca/touchtimes #mtbos #iteachmath

Desirée Patterson uses geometric transformations of photographs—anamorphic like—to explore human impact on nature. See her Anthropocene art at the King Edward station!

Or, in the colour calculator, 28513/99999 with table width 6 for the left and table width 5 for the right. Try! sineofthetimes.org/experiments-wi…

Exploring tessellations with websketchpad: some are familiar and some are chellenging our definition about no overlap and no gap.

WCDSB #STEAMdays T=Tech Tuesday ... explore block symmetry with Web Sketch Pad tasks from Geometry4YL #thanks sfu.ca/content/dam/sf… using sfu.ca/content/dam/sf…

We are working on new activities for elem school kids... interesting, engaging & deep mathematics... The first one is up: sfu.ca/geometry4yl.ht…. Thanks Sandy Bakos, Annette Rouleau, Victoria Guyevskey, Rebecca Cohen. Check out Symmetry & Triangles activities. #bcedchat #bcamt.

Exploring and constructing polgons while meeting new geometric vocabulary and making shapes you have never seen before! A Plethora of Polygons: sfu.ca/geometry4yl. #bcamt #bcedchat

New blog post: Exploring the beautiful pi-petal rose. wp.me/p1dfmY-pu7 #mathchat #mtbos

Another activity to develop spatial, holistic reasoning in mathematics. Thinking of the changing phases of the moon and how they relate to circles. Two Circles: sfu.ca/geometry4yl.ht…🙏 Daniel Scher and Quincy Wang. #bcedchat #bcamt #geometry

Learning about angles using a dynamic fan model. Use the fan to compare the angles formed by dancers’ arms and to orient yourself on land. sfu.ca/geometry4yl.ht…

Triangles at work in this 44 metre high Kinsol trestle.