It's a #tessellation AND an #array!!! #mathphoto17 t.co/sqFgxD1awq - @mathinyourfeet

A walkway in Bellingham, WA #Tessellation #mathphoto17 t.co/LvMnA1GS5p - @cmuirmath

At my local #Tessellations #mathphoto17 t.co/sCEdsUUkh0 - @cass_lowry

These #lines caught my attention (and my credit card) @Nordstrom Anniversary Sale #mathgoggles #mathphoto17 t.co/l2KuY6lnXp - @chrissybug24

@Visschinspired #mathphoto17 #estimation How much does this rock weigh? How did it get here? 12yo and 10yo for sca… t.co/unj5g1u2ia - @mmedevries

Wk 3 #mathphoto17 #array Tactile Ground Surface Indicators - road safety for pedestrians with vision impairment t.co/NF1HJXus45 - @UC_SERC

Architect Gaudi's unfinished masterpiece- Sagrada Familia #solids #cubism #lines #mathphoto17 #MathInSpain t.co/KWHxbtvamO - @MelissaSeco

Babushka dolls from #Spain for measurement #mathphoto17 t.co/Zh04MNs40u - @MelissaSeco

Piggy bank #array. 20 stacks of 4 nickels makes $4. #mathphoto17 #tmwyk t.co/goeAfbvykN - @TheErickLee

Loving this floor pattern! #tesselation #MathPhoto17 t.co/eElwohG1vr - @mavenofmath

Thanks to all who joined in #Mathphoto17! Still archiving: t.co/ggdAZXsSrO & t.co/SRFzq81zEo Who w… t.co/6DVMF6rNIS - @carloliwitter

Hong Kong #mathphoto17 #lines t.co/aVOEx5uOYe - @mtrushkowsky

#lines at the Smithsonian Art Museum. #mathphoto17 t.co/IQ4tHEX5wF - @Zakchamp

#MathPhoto17 RCMP Musical Ride in Halifax, NS. An array of horses. t.co/AxvTuDAoUA - @DenisejMac

Nice #array by the kiddo. She drew a line and arranged the chalk in same order. 🌈 #mathphoto17 #tmwyk t.co/guyddiaaRy - @mrsforest

Round hay bales r a lovely sight. #solids for last wk of #mathphoto17 t.co/BjgOjS0Qsq - @RiversoMaria

Jain #array @RubinMuseum. #mathphoto17 t.co/yw4DbWlmIN - @mskleinbart

Tessellations in the playroom today. Legos and the arm of this chair. #mathphoto17 #tessellation t.co/QvLFegHuAZ - @mrsforest

#PrincessKay butter sculptures! #HowMuchButter?! #mathphoto17 #solids #MathIsEverywhere #OnlyInMN #MNStateFair… t.co/j1TNO4mUZQ - @daukmath

Noticing a row of geometric #solids while candlepin bowling. #mathphoto17 t.co/ed39aNmOOS - @TheErickLee

NH farmers' market not my pic but got permission to share! #mathtalk #fractiontalk #mathphoto17 #MTBoS t.co/iRmG7WEnmB - @normabgordon

#VW #scale #mathphoto17 t.co/rMaOIBvb1N - @Just_in_Moore

Trapezoidal and conical large #scale earth #solids @CahokiaMounds built by the Mississippian culture #mathphoto17 t.co/hkIQGgokkg - @julietaSpace

Nature loves a good fractal space-filling curve. Spotted at Gardens by the Bay in Singapore #mathchat #mathphoto17… t.co/ePUfHc0MRH - @misterwootube

#symmetry is everywhere in #persian #architecture. Tons of beauty in #isfahan and #shiraz #mathphoto17 t.co/3yZNxFFJBM - @anndurham13

1:150 #scale model of the Baths of Antonius in #Carthage #Tunisia #mathphoto17 t.co/YNmD1B3NIR - @anndurham13

A tile at #USC #mathphoto17 #symmetry t.co/Jg0cLIQVZO - @aprilf4175

Learning to split! Students getting their sweaty brains on during Math! #Education #mathphoto17 #educationmatters… t.co/2Oad3nuelR - @MeaganClarke82

Noticing geometric #solids this afternoon on my walk around Garry Point, Steveston, BC #MathPhoto17 t.co/xx82aQcWbl - @jnovakowski38

Retweeted judy keeney (@JudithKeeney): How many dinosaurs? How did you think about it? #mathphoto17 #arrays... t.co/FkSahSqIVR - @DysMLD

Concave #solids, salt drying stones at Lapakahi State Park t.co/EVxfQ5JGfe #mathphoto17 t.co/V2KiyM09iG - @julietaSpace

#mathphoto17 #Tessellation Capilla de Santa Catalina en la Catedral de Burgos t.co/LCbANSf5bY - @alfgoralo

Lines! (Headlamp selfie before the Tread Nightly Trail Race at @usnwc) #mathphoto17 t.co/kqEqAB2J80 - @DaveCesa

How many mirrored tiles on this ornament? #estimation #mathphoto17 #math #maths t.co/6nRENNDW4S - @24game

Noticing both human-made & nature-made bilateral/reflection #symmetry in Kelowna, BC #MathPhoto17 t.co/81YnakZPk9 - @jnovakowski38

Love the #mathphoto17 for this new school year @RHS_Eagles @ansil_howard @theceebru @redoakdriving @MsJP_101 t.co/B3dfJ3wNOT - @sssmith0903

So many types of #lines & #symmetry in Málaga, Costa del Sol #mathphoto17 #MathInSpain t.co/3sYJp6GDKH - @MelissaSeco

a Hawaiian roll that especially delicious #symmetry #mathphoto17 t.co/j98YRItvns - @aprilf4175

Greetings from Algeria, where even the public sidewalks tessellate nicely! #mathphoto17 #tessellation t.co/yFSXV2MPkL - @jennalaib

Lines in Tsawassen, BC #mathphoto17 t.co/vk9cUSLc3a - @CDawson18

Lava folds into slow ripple #lines @Volcanoes_NPS #mathphoto17 t.co/u92EXkRbxz - @julietaSpace

Lines on fabric on a routemaster bus seat #mathphoto17 t.co/aIooAIyaDm - @Simon_Gregg

@UC_SERC's hunt for domestic #Tessellation #mathphoto17 (quilt, scarf and placemat) t.co/EyUTn6yE2d - @UC_SERC

Storm King Art Center #solids #mathphoto17 t.co/hf5dGcj9N8 - @mtrushkowsky

Honey comb 🍯! Hexagon units in Málaga, Costa del Sol #mathphoto17 #MathInSpain t.co/DxKo4Gry69 - @MelissaSeco

Labyrinth lines on the Northern Line #mathphoto17 t.co/Kdet1W3R75 - @Simon_Gregg

Wolfgang Buttress sculpture "Una" @our_ANU for #mathphoto17 #solid t.co/We0RuVcSSI - @UC_SERC

#MTBoS ACT 1 please notice and wonder (reveal (or ACT2) will be posted later today) #msmathchat #mathphoto17 t.co/Mh5OnPCppH - @normabgordon

#scale footprints in the sand #mathphoto17 @UC_SERC ☀️🌊🍦 t.co/a3J3D0A2zA - @D4nielleH

Some parallel #lines from the Halifax Central Library. #mathphoto17 t.co/XXN1eDBpMl - @TheErickLee