Week 2: estimation How many pieces of chalk? #mathphoto17 t.co/9igIaIMqZm - @rachelmarker

Thinking about #units and conversions and all the math concepts involved in converting foreign currency #yen… t.co/udbJoJyeis - @jnovakowski38

#zero bodies here #warsaw #mathphoto16 t.co/GE7ubsqTZx - @julietaSpace

"may I please have 3 chocolate munchkins?" #unitchat #mathphoto17 t.co/2wS7xvHlqy - @cmmteach

Crested Butte, Colorado Garden patio #lines #MathPhoto17 t.co/TlY04A1SdH - @HthrLynnJ

This pic of my kid looking out window @ road paving really shows some interesting #lines in & around the window for… t.co/lxQAhHNget - @mrsforest

#mathphoto17 1x2 #array of doors containing 2x3 #arrays of windows t.co/xgeZZbnkdV - @jweber3rd

#mathphoto16 #shapes Horse in Custer,SD t.co/yZaBRY3Inw - @debboden

Math at the beach #mathphoto16 #multiples t.co/T26y5P6e9v - @JeniSigmon

#symmetry everywhere in our classroom #mathphoto16 t.co/tDv6NwgyHB t.co/a9IPXjGDVi - @MrsMars_OLF

Playground #lines #mathphoto16 t.co/0adZqSV6hV - @RRElemMath

Symmetry = a thing of beauty @NationalGallery in #Ottawa #mathphoto16 @mathphoto16 t.co/agaKSBRI3U - @miraultolmc

@carloliwitter @Trianglemancsd @mathinyourfeet @mrsforest @nomad_penguin @SuMACzanne @bkdidact @TracyZager @MrSurti… t.co/3PmPmR3R9q - @JDaomath

Watercolor self-portrait of L at the Pipilotti Rist show. #tmwyk #array #mathphoto17 t.co/vTGoxEFFqH - @mtrushkowsky

Spilt marbles...#estimation pic for #mathphoto17 t.co/7qH3poJp43 - @RiversoMaria

How many seashells in each? How many different kind? How many in all? How long until vacation? (9 days!)… t.co/cvFsq5azGP - @MNmMath

How many bales? How do you know? #arraychat #mathphoto17 #fwymath #MTBoS t.co/cAsSfEbdu4 - @MrsNewell22

Missed week #1 of #mathphoto17 but I'd like to share one sweet #tessellation example & one where you can stop to re… t.co/S7EuL6lDQE - @ccampbel14

How many children will fit in the cardboard house? (Complete w/a white chimney and roof stabilizers) #mathphoto17… t.co/1SYeN68Dha - @sumboxes

My kids found these shells on our recent trip to Florida #scale #mathphoto16 t.co/9kKd2ADGYE - @davelovesmath

Kindergarten work with symmetry. #mathphoto16 #hpslions t.co/1q4572We6D - @Howe3rdMath

We found so many examples of #symmetry! #mathphoto16 t.co/UFeeHWWn7e t.co/jUgVMcrHUL - @MrsMars_OLF

All kinds of rotational #symmetry on the playground #mathphoto16 t.co/RyDmG1b16y - @kangoff

No os perdáis este hashtag #MathPhoto17 La primera semana será sobre #teselaciones t.co/9gIkkJG7b1 t.co/KEuA2WmS1G - @Chuso_Jar

#mathphoto17 #Tessellation Capilla de los Condestable a en la Catedral de Burgos t.co/MTMXB2Nysl - @alfgoralo

#MathPhoto17 #tessellation t.co/HEl4B6shBQ - @martinsean

#mathphoto16 #infinity The endless amount of synapses that occur in our brains as a result of effort & hard work t.co/6aGzQ949Ju - @pearse_margie

If you're not joining in with the @mathphoto16 challenge yet, get involved! This week it's #symmetry #mathphoto16 t.co/fcXiHO8sM5 - @honeypisquared

Chicago. #mathphoto16 #scale t.co/bKVJItHnxi - @mlgray1313

Lines are everywhere at the lakehouse! I sent my kids on a photo scavenger hunt. #lines #mathphoto16 t.co/LvRpAVqmvx - @KariMaurer1

#symmetry Reflective symmetry in classical architecture. Hampton Court.#mathphoto16 t.co/7VpbT5R3Zi - @takepi21

Breathing Flower by ChoiJeong Hwa #multiples #mathphoto16 t.co/lfB6ijeQkc - @AnneWTeach

#mathphoto16 #shapes t.co/xPwfozeeGA - @julierwright

#mathphoto16 #multiples my #fridge t.co/5Ubw8RKO9M - @jweber3rd

Tux is quite symmetrical, don't you think so? #symmetry #mathphoto16 #tux t.co/gdGDrva3lU - @JaimeJSuarez

Photos from a recent trip to the Mayan Riviera - pottery & cool lounge furniture with #symmetry. #mathphoto16 #abed t.co/XiBvv32pRo - @ccampbel14

The majestic organ at St. Joseph's oratory in #Montreal #scale #mathphoto16 t.co/ejMkTkyeX3 - @AshtonOLMC

Child drew a dragon tail, placed crayon in middle, said "it's 3 here and 3 there!" #mathphoto16 #symmetry t.co/wrCp11NFey - @jnathanedmonds

Here's some #symmetry from around NYC supreme court. #mathphoto16 t.co/ltxi0aVfqL - @carloliwitter

Timber army scarves for big and little ones. #mathphoto16 #scale #RCTID t.co/SKStLV5xkW - @welblair

Grandma's chair and mine #mathphoto16 #scale t.co/FwZoyYBmgq - @buffalogal03

Bilateral #symmetry seen in paper creations at the #vmmf - #mathphoto16 t.co/9t7BX7Zyaw - @jnovakowski38

A son's treasured bears of #scale from the past @mathphoto16 #mathphoto16 t.co/Nuwju07MW7 - @charylhills

Symmetry in my backyard! #symmetry #mathphoto16 t.co/JBKPzTiIV4 - @MrsCombden

#mathphoto16 #symmetry #prayfororlando t.co/IPTdBOhnbq - @rilesblue

#mathphoto16 new umbrella for the outside dining table #lines t.co/biPTLQVHJV - @JudithKeeney

Cal Poly SLO campus left me thinking about the #mathphoto16 challenge #symmetry @mathphoto16 t.co/Na50nftGzz - @mskquez

Cassette tape organiser. Bonus if you know what a cassette is! #multiples #mathphoto16 t.co/TN8BL1S0tC - @Pierre_Tranche

So many types of #line #MathPhoto17 #Spain t.co/jN4y4Fpqz7 - @MelissaSeco

"may I please have 3 chocolate munchkins?" #unitchat #mathphoto17 t.co/2wS7xvHlqy - @cmmteach