Birthdays: 23 people can be combined into 253 pairs. In a pair probability of the same birthday 1/365. The total is 253/365 > 1/2. Agree?

Cartoon starter for conditional probability http://is.gd/Tie2Ks #math #maths #mathchat #edchat

are you passionate about #problemsolving check out www.havesumfunonline.com

getting close to 500 followers soon we hope? new #hsfol comps coming soon

Australians buy around 20 million newspapers every week #edconf11

Raspberry Pi. A computer the size of a credit card for teaching kids how to program. bit.ly/HbnmMH

A game generalizing Hall's theorem. arxiv.org/abs/1204.0139

Online maths problem solving quiz - team & individual comps. www.havesumfunallstars.com, #mathchat

www.havesumfunallstars.com Great resource for #giftedandtalented students #maths #problemsolving created by maths #teachers

www.havesumfunallstars.com #maths #problemsolving Term 1 Years 5, 6, & 7 great for #giftedandtalented #australian students and #teachers

Round 1 open good luck to all teams

Round one of Have Sum Fun Online for years 5 - 10 finishes tomorrow. Well done to all the students who have already taken part!

Have Sum Fun Online is an #online #maths quiz focusing on #problem solving and allows students to practice # NAPLAN style questions

Have Sum Fun Online for years 3 & 4 starts May 30th, this provides a great #extension strategy for #gifted & #talented students.

Great results term 2 #HSFOL #mathscompetitions results & prizes posted shortly. Great resource for #problemsolving - www.havesumfunoline.com

Have Sum Fun Online Love the concept. Hope you can follow and find some of my brainteasers useful. My Olympic-themed #numberpuzzle App is out 27July!

#24 Using the numbers 5 7 8 8 just once each, and having + - x ÷ available, show how you can arrive at the target answer of 24. #arithmetic

Have Sum Fun Online Just 363 days to the London Games and my fun Olympic-themed #numberpuzzle app is now at the AppStore -The Mathelona Games. Enjoy!