We have a challenge a day for you throughout the summer break...
Each weekday from 20 July to 28 August, a new poster problem will appear on this page.
After you've had a go at the day's problem you can compare your approach to the solutions we have published, which are based on students' work. If you particularly enjoy one of the challenges and would like to explore further, you can follow the link to the original problem on which the poster is based.
You can find the Secondary Poster Problems here.
![Decimal Time Poster](/sites/default/files/styles/medium/public/thumbnails/content-id-4915-icon.png?itok=3tTCpxBS)
![Online Poster](/sites/default/files/styles/medium/public/thumbnails/content-id-5006-icon.png?itok=G6rU4yC5)
![Seven Flipped Poster](/sites/default/files/styles/medium/public/thumbnails/content-id-5587-icon.gif?itok=ZtI-RzTK)
![Sets of Numbers Poster](/sites/default/files/styles/medium/public/thumbnails/content-id-5906-icon.png?itok=WknXuZv7)
![Two and Two Poster](/sites/default/files/styles/medium/public/thumbnails/content-id-6324-icon.png?itok=Kaf9z2lL)
![A Bowl Of Fruit Poster](/sites/default/files/styles/medium/public/thumbnails/content-id-6520-icon.png?itok=nHeIoCfc)
![Clocks Poster](/sites/default/files/styles/medium/public/thumbnails/content-id-6557-icon.gif?itok=LIv4wsXl)
![Shape Times Shape Poster](/sites/default/files/styles/medium/public/thumbnails/content-id-6653-icon.gif?itok=PIlR-gaP)
![Inside Seven Squares Poster](/sites/default/files/styles/medium/public/thumbnails/content-id-6811-icon.png?itok=lRqvKvDD)
![Magic Vs Poster](/sites/default/files/styles/medium/public/thumbnails/content-id-6814-icon.png?itok=qa-HxcTS)
![Clock Face Poster](/sites/default/files/styles/medium/public/thumbnails/content-id-6818-icon.png?itok=8GriIYBl)
![5 On The Clock Poster](/sites/default/files/styles/medium/public/thumbnails/content-id-6819-icon.png?itok=Gf_RIoT8)
![Mystery Matrix Poster](/sites/default/files/styles/medium/public/thumbnails/content-id-6823-icon.png?itok=-utrOGan)
![The Deca Tree Poster](/sites/default/files/styles/medium/public/thumbnails/content-id-6828-icon.png?itok=kbCThan4)
![Egyptian Rope Poster](/sites/default/files/styles/medium/public/thumbnails/content-id-6832-icon.png?itok=_oAuAINu)
![Domino Square Poster](/sites/default/files/styles/medium/public/thumbnails/content-id-6833-icon.png?itok=prkHDbgl)
![Negative Dice Poster](/sites/default/files/styles/medium/public/thumbnails/content-id-6838-icon.png?itok=416MCau9)
![You Never Get A Six Poster](/sites/default/files/styles/medium/public/thumbnails/content-id-6839-icon.png?itok=i2dvSgy0)
![Mixed Up Socks Poster](/sites/default/files/styles/medium/public/thumbnails/content-id-7193-icon.png?itok=4Mf-VOrY)
![3 Block Towers Poster](/sites/default/files/styles/medium/public/thumbnails/content-id-7196-icon.png?itok=5rzN0UAt)
![Eggs in Baskets Poster](/sites/default/files/styles/medium/public/thumbnails/content-id-7200-icon.png?itok=J_mKCDAQ)
![Hundred Square Poster](/sites/default/files/styles/medium/public/thumbnails/content-id-7202-icon.png?itok=orBrB7ua)
![Make 37 Poster](/sites/default/files/styles/medium/public/thumbnails/content-id-7205-icon.png?itok=KdZdsWvE)
![Noah Poster](/sites/default/files/styles/medium/public/thumbnails/content-id-7210-icon.png?itok=ALVEdhd_)
![One Of Thirty-Six Poster](/sites/default/files/styles/medium/public/thumbnails/content-id-7212-icon.png?itok=qzJsr8nz)
![Stone Age Counting Poster](/sites/default/files/styles/medium/public/thumbnails/content-id-7213-icon.png?itok=_otzK7VJ)
![Three Way Mix Up Poster](/sites/default/files/styles/medium/public/thumbnails/content-id-7214-icon.png?itok=248Djt4l)
![Dotty Six Poster](/sites/default/files/styles/medium/public/thumbnails/content-id-8002-icon.png?itok=y_d3Z5Uq)
![Got It Poster](/sites/default/files/styles/medium/public/thumbnails/content-id-11228-icon.png?itok=fe_VXhaA)
![Dicey Operations in Line Poster](/sites/default/files/styles/medium/public/thumbnails/content-id-13262-icon.png?itok=Bi9xo2Db)