Architectural #lines and shadows by David Adjaye @artinstitutechi #mathphoto16 t.co/OXL7DnjBMl - @julietaSpace

Noticing symbols of #equality and balance in Osaka, Japan #MathPhoto17 t.co/PiyxpqWyyl - @jnovakowski38

#mathphoto16 #symmetry At the atrium in the hospital in London, Ontario t.co/WbbagOvYxX - @mathxprt

Exhibit outside Denver Museum of Art #mathphoto16 #lines t.co/R1qYeb8ECk - @MsHaughs

#mathphoto16 t.co/bWCfsNAxDL - @Veganmathbeagle

Lunch in downtown Vancouver - #lines and #array everywhere #MathPhoto17 t.co/RREaOP194b - @jnovakowski38

My daughter baked cookies today. About how many do you think are on the plate? #mathphoto17 #estimation t.co/OFHCrMlVaT - @AshtonOCSB

Inside a federal building in San Francisco during #NCTMannual. #mathphoto16 #symmetry t.co/jXZUeIDd6n - @Pierre_Tranche

My last entry for this week's #MathPhoto17 - a mini BC blueberry pie with an #array top crust -starting Weds is lin… t.co/28uabnOkgd - @jnovakowski38

A Jackie O. #array at the Andy Warhol Museum in Pittsburgh. #mathphoto17 t.co/jIe8OqE1k6 - @bkdidact

How many Minnie's? #estimation #MathPhoto17 #PCMIsummer t.co/s1ksyvCREG - @matienda

Was at a fitness store in Edmonton & noticed these weights. How many do you see in each view? How heavy?… t.co/uT5mnjRIUA - @ccampbel14

About how many water bottles can this cooler hold? Enough for a class or more? #MathPhoto17 #estimation t.co/GV9LVyqkyS - @charylhills

How many Teddy Grahams? Benchmarks to help #MathPhoto17 #estimation t.co/mrnZl1OAwY - @charylhills

Finished this #tessellation recolouring today, #mathphoto17, #eschermadrid, I call it Harbour Seals. t.co/TtotMxKzYa - @FChampagne1

All of these are from #PCMIsummer TLP classroom! #mathphoto17 @carloliwitter @pegcagle @matienda @@MFAnnie… t.co/1HFXuWke7Y - @SuMACzanne

@carloliwitter @Trianglemancsd @mathinyourfeet @GlobalMathDept @mrsforest @nomad_penguin @SuMACzanne @bkdidact… t.co/NnhVQnCWm9 - @debboden

#multiple Tin Caps winners in the Tecumseh Major Mosquito tournament - way to go boys! #mathphoto16 @mathphoto16 t.co/tWE4RNsZBM - @sarahsanders33

@mathphoto16 here you go! Some #symmetry taken today in #Vancouver! #mathphoto16 t.co/meMyBkpGYA - @_Cuddlefish_

Rock symmetry #mathphoto16 t.co/NAlFBpNUu1 - @Angieeila

Some intricate #shapes in furniture @ROMtoronto Samuel European Galleries #mathphoto16 t.co/1HHhwk6Jft - @RiversoMaria

#equality #mathphoto17 t.co/vq1SBXIukP - @numberdance

In flight #lines #mathphoto17 t.co/oYm5uJzmp7 - @mtrushkowsky

#mathphoto17 #lines #parallel #perpendicular and #converging t.co/7NSQxipkFY - @jweber3rd

Probably my favorite #array #mathphoto17 #aac #slpeeps #atchat t.co/iMywOuVuFW - @gallianstone

#mathphoto17 #tessellations #mathontherun t.co/DndVZXKzXQ - @mlangmyer

Computer Commuter loving my #tessellation #mathphoto17 t.co/KwHMc1FxN2 - @MNmMath

Stars and pentagons and things #Tessellation #mathphoto17 t.co/IhGbq8iaQa - @Simon_Gregg

Hey #MTBoS, it's Math Photo Challenge time, starting with #tessellation! So take new photos, or post old ones, and… t.co/WIrYRFyfrZ - @carloliwitter

Water Wings #mathphoto16 #symmetry t.co/dwUMHnSqTp - @JujuMavenista

#MathPhoto16 #symmetry on Squam Lake in Holderness, NH :) t.co/6MuYGHx5h4 - @janetdnuzzie

Earth's Treasures gallery @ROMtoronto includes samples of nature's bountiful beauty & #shapes #mathphoto16 t.co/cCj3qR2QFe - @RiversoMaria

Cool roof trusses at Mammoth Middle School. #mathphoto16 t.co/fmvSMmCW7g - @SouleSharon

Thorne miniature rooms a matter of #scale t.co/OTNUvZvfQR @artinstitutechi #mathphoto17 t.co/b6NbPrwMkx - @julietaSpace

An origami dahlia reflected in an #infinity mirror for #mathphoto16 t.co/WcchTDGFSJ - @CambridgeMaths

Suzanne Lacy's The Crystal Quilt 1985-1987 #mathphoto16 #symmetry t.co/qMaxsNVR5U - @pinn

These #lines on the floor have a tendency to look slanted even though they're parallel. #mathphoto16 t.co/3bH1uoWMVr - @RRElemMath

Blue whale to scale! #scale #mathphoto16 #amnh t.co/2XXSHvF69q - @jnathanedmonds

#lines too high for me! 😬#mathphoto17 t.co/To5wvGIrqW - @Barkerjbarker

High scary #lines #mathphoto17 t.co/MXdyhaCIXm - @Barkerjbarker

6 rows, 3 petals in each. If a petal fell each day for 7 days, what fraction of the petals remain? #mathphoto16… t.co/xliZ3eoRB7 - @WheresMyMuseee

#mathphoto17 #array of dials on panel from inside @USSMidwayMuseum #CV-41 #SanDiego t.co/Q38qUaedNj - @jweber3rd

In week 2 of #MathPhoto17, our pictures will ask ?s like 'How much?' or 'How many?' TLet's pictures that require… t.co/Y6rFvwPGFi - @carloliwitter

#mathphoto17 #tessellation t.co/FyzWTDyXNu - @DavidKButlerUoA

Just noticed my math comic's relevant for #MathPhoto17. Or #Tesselation anyway. t.co/1vcBNrALLE (There's li… t.co/mf5YmVmkXI - @mathtans

Some more pics from Portland #mathphoto17 t.co/3H7kiYMiMX - @debboden

Summer afternoon #symmetry #mathphoto16 t.co/DXpc2dkRbv - @LizaDGoldberg

Does this work for #scale #mathphoto17? t.co/LO0lf8d50X - @normabgordon

Wonder how much coffee would fit in the giant cup... #mathphoto17 #scale t.co/TAUIJyDCbZ - @pinn

#mathphoto16 Walrus symmetry on The Alaska Bldg @msMecksclass @MsSmith_QAE can you find examples of symmetry at #QAE t.co/5oFVxEwbhc - @shorbyldf