Dr Tom Crawford

Mathematician @UniofOxford AND @Cambridge_Uni, @OxfordConted, @Numberphile, @YouTube 'Creator on the Rise', Naked Mathematician, @TedX Speaker, @c4countdown

[Dr Tom Crawford @tomrocksmaths]

COUNTDOWN. Still can’t believe this happened, but you will now be able to watch me attempting to do maths live on television for the next 3 weeks, starting Monday at 2:10pm @Channel4. So excited to be joining the @C4Countdown family - long live daytime television!!

[Dr Tom Crawford @tomrocksmaths]

What a brilliant day @Cambridge_Uni for the 2026 Open Day. Can’t wait to do it all again tomorrow :)

Thanks to everyone that came along to my taster session on complex differentiation and best of luck with your applications!

[Dr Tom Crawford @tomrocksmaths]

NEW VIDEO: What are frequency trees?

The first of several videos I recorded with @bbcbitesize covering topics from GCSE Maths. I used to watch these videos when I was at school - crazy to think I'm now presenting them!

https://t.co/qi8vEFaln1

[Dr Tom Crawford @tomrocksmaths]

https://t.co/0c9QcenLfM

Pleased to be able to offer my opinion as part of a BBC article on the potential impact of the upcoming social media ban for teenagers in the UK.

Read the full piece at the link above and let me know what you think.

[Dr Tom Crawford @tomrocksmaths]

The final day travelling along the Pamir Highway featuring the 1200 year old Hulbuk Palace, the world’s second highest hydroelectric dam, and a caravan market at the Afghan border.

What an adventure it’s been - almost 1,500 km from Osh in Kyrgyzstan to Dushanbe in Tajikistan.

[The PTI @PTIEducation]

Our Maths keynote speaker at The PTI Subject Enrichment Residential was @tomrocksmaths who gave a fascinating talk which included Platonic Solids, Countdown and Penalty Shootouts #PTIRes

[Dr Tom Crawford @tomrocksmaths]

https://t.co/WIi4B8xxWD
Spend your weekend learning some new maths with the next batch of 20 essays in the 2026 TRM Essay Showcase. From gaming strategies, to measuring inequality, via the truths that broke mathematics - as usual there's something to suit everyone's tastes!

[Dr Tom Crawford @tomrocksmaths]

Solving maths puzzles at the Google London office with YouTube Head of Health Dr Garth Graham.

It was great to hear more about what the platform is doing to make a safe online space for teenagers and young adults.

Thank you everyone for your questions - video coming soon!

[Dr Tom Crawford @tomrocksmaths]

Pamir Highway Day 5 - the history of the Wakhan Valley through forts, temples and an ancient stone calendar (seen in last image).

Stone calendars are examples of early orbital mechanics where the position of the sun and moon are tracked against physical markings or engravings.

[Dr Tom Crawford @tomrocksmaths]

https://t.co/uhwOHPWnQO

Learn about rocket trajectories, the incredibly named "hairy ball theorem", how social media algorithms deceive us mathematically, and numbers that can't be bought.

The next batch of 20 essays in the 2026 TRM Essay Showcase are now online :)

[Dr Tom Crawford @tomrocksmaths]

Tomorrow I'm interviewing YouTube's Head of Health, Dr Garth Graham, about the upcoming social media ban for teenagers in the UK - what questions would you like me to ask? Write them in the comments and I'll try to ask as many as I can!

[Dr Tom Crawford @tomrocksmaths]

Pamir Highway day 4 - hiking to 4800m at the Afghanistan border.

The Panj River forms a natural boundary between Tajikistan and Afghanistan for 1,080km, which covers 79% of the border between the 2 countries. In fact, 23% of international borders worldwide are marked by rivers.

[Dr Tom Crawford @tomrocksmaths]

https://t.co/Rbw4tSGBz3

Group VII from the TRM Essay Showcase is now online with the usual eclectic mix of maths applied to a range of unexpected topics for you to enjoy.

Check the contents on image 2 and head to the link above to read them all. Have fun!

[Dr Tom Crawford @tomrocksmaths]

Calling all maths fans - I need your help to solve this puzzle!

Using the 50 Tetris pieces as specified can you perfectly fill a 20 x 10 grid? There are 7 copies of each of the 7 different tetrominoes, plus 1 extra T-shape.

Send me your solution here: https://t.co/6JXaZqg1Tj

[Dr Tom Crawford @tomrocksmaths]

Day 3 on the Pamir Highway - reaching the highest point at 4655m, yak riding, and beautiful views.

Visiting Tajikistan means I’ve now been to 4 of the 7 ‘stans’, with only Pakistan, Turkmenistan and Afghanistan remaining. In how many different orders can I visit the remaining 3?

[Dr Tom Crawford @tomrocksmaths]

@educationsdotpk Next on the list!

[Dr Tom Crawford @tomrocksmaths]

Pamir highway day 2 - hike to Traveller’s Pass at 4150m on the way to Lenin Peak, before crossing the border into Tajikistan.

Lenin Peak sits at an altitude of 7,134m making it one of only 146 mountains that reach 7,000m or higher. Almost 75% of them (108) lie in Pakistan. TIL.

[Dr Tom Crawford @tomrocksmaths]

https://t.co/x9TIeTBYKr

Essays galore with Group VI of the 2026 TRM Essay Showcase now available online. A geometry theme throughout, plus essays on the cuteness of kittens, mind-boggling large numbers, and the sport of curling.

Contents on image 2 and essays at above link :)

[Dr Tom Crawford @tomrocksmaths]

@volinad Oh this sounds amazing - thanks for the tip!

[Dr Tom Crawford @tomrocksmaths]

Day 1 travelling the Pamir Highway - a 1,200 km route across Kyrgyzstan, Tajikistan and Uzbekistan. Construction of the second highest road in the world reaching 4655m was completed in 1937 by the Soviet Union. Do you know where the highest road is located?

[Dr Tom Crawford @tomrocksmaths]

Sulaiman Too in Osh is the only UNESCO world heritage sight in Kyrgyzstan with a history spanning thousands of years.

It is believed to be the “Stone Tower” referred to by Ptolemy in his treatise ‘geography’ which marked the mid-point of the ancient Silk Road.