David Geelan

Husband, father, author, teacher of teachers, motorcyclist, metalhead, cishet ally of LGBTIQ+

[David Geelan @ProfBravus]

If only about 10% of students take up science careers, why do we insist that all students study science? I argue that the payoff is in preparing graduates to be global citizens. https://t.co/zdH0at0MSJ

[David Geelan @ProfBravus]

The USA is terminal

It has a nasty case of Trump that can be controlled this November and cured in 2028

But the metastases are in every organ

[David Geelan @ProfBravus]

@Dussyme 4

[David Geelan @ProfBravus]

@hicasamadim 254

[David Geelan @ProfBravus]

Metal playlist for the Mystic Festival 2026 in Gdansk, Poland: https://t.co/vvyICvEuGU

Megadeth, Anthrax, Mastodon, Behemoth, Saxon, Cavalera, Black Label Society, Down, Blood Incantation, Ice Nine Kills

[David Geelan @ProfBravus]

@Simi_2210_ 382,880

[David Geelan @ProfBravus]

@Maddu_550 3

[David Geelan @ProfBravus]

@Aliya_1516 45

[David Geelan @ProfBravus]

@NAIRA680411 @Simi_2210_ Answer is found by multiplying the number before and the number after the given number

For example, for 3, 2x4=8

So for 7, 6x8=48

[David Geelan @ProfBravus]

@NAIRA680411 48

[David Geelan @ProfBravus]

@NAIRA680411 @Rose131373 Sum and difference

[David Geelan @ProfBravus]

@NAIRA680411 100

[David Geelan @ProfBravus]

@Simi_2210_ 179

[David Geelan @ProfBravus]

@Cairo_xprsk 127

[David Geelan @ProfBravus]

Hey @Apple , fix this

iPhone 14 Pro, IOS 26.3.1

Ever since upgrading to IOS 26 I have this notification in Settings, but every time I click on it I get this error message

Wifi or cellular, nothing fixes it

[David Geelan @ProfBravus]

Guess it’s a case of “You can check out any time you like, but you can never leave” (guitar solo)

[David Geelan @ProfBravus]

@guardian Subscribed to ‘The Guardian Australia’ to support independent journalism

Now trying to trim expenses in retirement, and apparently I have to phone the UK (and potentially spend time on hold) to unsubscribe

[David Geelan @ProfBravus]

“Due to temporary service difficulties, we are unable to connect your call at this time. Please try again later.”

[David Geelan @ProfBravus]

@colonelhogans And you are doing… what that is more effective?

[David Geelan @ProfBravus]

Homeward bound from an enormously enjoyable #ASERA55

Organising committee Jared Carpendale, Carrie Swanson and Cathy Buntting did a superb job: every detail was not only taken care of but showed real thoughtfulness

Thanks to the team, and onward to #ASERA56

@ASERAeducation