Some nice #lines here on the @IUBloomington camps. #mathphoto17 t.co/CQr5NKsI9Z - @mathinyourfeet

#lines in paradise! #mathphoto17 t.co/wb8xmwvXiV - @MNmMath

Bridges are great places for #lines, apparently! #MathPhoto17 #charlestonSC t.co/KmcTAAWajq - @cmmteach

Looking for #lines for Week 4 #mathphoto17 - this image: coffee shop wall art t.co/ecArK2EXXx - @UC_SERC

#Lines of light in the New York City night! #mathphoto17 t.co/PhvbuqEfBN - @bkdidact

#mathphoto17 of cube with regular camera and 360 camera inside cube. #lines on the cube turn into #curve s when vi… t.co/j0UjXp64My - @Geometiles

A tasty #array at The Revolution Ice Cream Co. in Brandon #mathphoto17 @RevIceCream t.co/KcBnUTk5AM - @anndurham13

Harries-Heder art installation between curved and straight converging #lines at Porter subway station… t.co/2rDxnAJ0zS - @julietaSpace

Curved #lines in fountains #MathPhoto17 t.co/wa4baigC1h - @cmmteach

#visualpatterns #mathphoto17 #lines t.co/J5YL07V9J5 - @matienda

#MathPhoto17 t.co/79N9dKaldG - @JustinAion

Dinosaur bones #array @FieldMuseum underground Collections Resource Center t.co/XLrewDnGsD #mathphoto17 t.co/eSFBFy5j5i - @julietaSpace

Vegetable plot #array @GarrisonInst #mathphoto17 t.co/NRi6Wrm8qt - @julietaSpace

Someone posted this on a garage sale Facebook group. I immediately thought #mathphoto17 & #estimation! She says it'… t.co/hWzF6Y6W0k - @mrsforest

I wanted to paint our school stairs like this! Multiples Array #mathphoto17 t.co/9dVH1XpeJe - @debboden

Found this array in the shipping department this morning! #array #mathphoto17 @24game #24game #SingleDigits48… t.co/Wvq5JX9F4Z - @24game

Summer road trip #array. I think I'm winning this round. #mathphoto17 t.co/qQNKSgxW7A - @TheErickLee

Estimation #mathphoto17 #estimation @mathphoto16 t.co/yneXAg09Si - @aprilf4175

Found #scale while cleaning my pantry. #mathphoto16 t.co/4OZ7PW48Yq - @nomad_penguin

The best #symmetry ever #mathphoto16 Oreo !!! t.co/KXmfqHk3Qh - @jocedage

#mathphoto16 #tmwyk t.co/lmmVhLV9AJ - @TeatherBoard

#mathphoto16 #shapes t.co/LGIrD96REq - @CityHallSchool

Symmetry in the national past time. #mathphoto16 t.co/7Wl2gPYPHm - @carloliwitter

Get ready for week 3 of #MathPhoto17 where looking for an #array or grid out in the wild. Follow along at… t.co/jQUJE1Gnxz - @carloliwitter

#mathphoto17 How many white 'bubbles' on the entire cylinder? #estimation t.co/d0m8P5ixE0 - @mrcootsmath

Seriouly #wtf #mathphoto17 #mindblown t.co/XsjGu5PE0u - @aptorres76

I've removed 467 pieces of litter from my front yard in the 🌎. An #estimation of 100/month Join the #Litterati… t.co/2drsU1q8Xd - @julietaSpace

An #estimation of how many seeds will become a plant t.co/e6Kenu1lo1 #mathphoto17 t.co/Qc1dwkninD - @julietaSpace

How many post-its is this? #estimation #mathphoto17 t.co/6pIVUcX4Lg - @mtrushkowsky

Does this fit with #mathphoto17 yet? Cool shadows from this window. t.co/BPyxqOrfWh - @crstn85

So much #estimation to do in nature! #MathPhoto17 t.co/av29RPABJD - @gallianstone

@mathphoto16 #mathphoto16 #symmetry #scale #FollyBeach t.co/w8cyD5AjWq - @jweber3rd

Empty bird cage at the pet store. #zero #mathphoto16 t.co/EeSdD0gz00 - @bstockus

#mathphoto16 #scale t.co/wsEc1ziiKl - @vaslona

@mathphoto16 gray's beach - yarmouthport - cape cod #mathphoto16 t.co/8oUIpbMDNE - @breathemath

More #lines at Adelaide Railway Station #mathphoto16 @mathphoto16 t.co/l9R6BpIq3U - @DavidKButlerUoA

Both a truth and a #mathphoto16! c/o @BuzzFeed & @zackevans t.co/GedYijrBBd @mathphoto16 #infinity #mtbos t.co/QyVIGTznjT - @MrSurti

#mathphoto16 #rotation #symmetry t.co/jH63CqwAYZ - @debboden

Fractal tiles #mathphoto16 #shape t.co/2mV6uUtxTy - @Veganmathbeagle

6th student geometric constructions #symmetry #mathphoto16 @mathphoto16 t.co/MrgbdDdt8Q - @charylhills

Plums ready for the freezer. #symmetry #mathphoto16 t.co/1U28ywurST - @jodymathcoach

Souvenir from Greece #shapes & more shapes #mathphoto16 @mathphoto16 t.co/Ee5oQoHrzu - @charylhills

Checkers outside Cracker Barrel with @SplashSpeaks #multiples #arrays #mathphoto16 t.co/eNlDDendgJ - @bstockus

Off topic, I know, but GUYS!! I found a spiraling color gradient!! #mathphoto16 t.co/86oTwJCaKQ - @mathinyourfeet

An interesting #shape illusion from Seckel's book on the subject. Do you see a spiral? #mathphoto16 t.co/wuwFSc4Ifz - @CambridgeMaths

How many #lines do you see in this carpet? #mathchat #mathphoto16 t.co/5uxp5YMCC5 - @MikeRashidMath

Thinking symmetry and food in Nairne, yum! #mathphoto16 t.co/eOMWSa4QHL - @ann_ruckert

An icon of the Imperial War Museum #symmetry #mathphoto16 (and a real-life photo as proof!) t.co/v5QPoV8Xhv t.co/tuRVxpD2R3 - @pinn

A little #symmetry at the grocery store! #mathphoto16 t.co/uHggtPxXMB - @SACDavidson

A few cars... #mathphoto16 #symmetry t.co/dqhu0wTa50 - @aprilf4175