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pulljosh.com
I love education & technology. https://www.joshuapullen.com/ Opinions are my own and do not represent those of my employer.
174 posts 140 followers 214 following
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Posts 16 Comments 34

I probably spent ~6 hours designing this multi-select dropdown menu, and it still has major issues that need to be fixed. Programmers know how long it takes to build things that users should take for granted.

submitted 17 days ago • 1 comment

I spent the majority of my teenage years with a ripping engine but no traction. I was talented, full of energy, and ready to build. I poured countless hours into projects. I wrote code, built things, and then... abandoned them. Now I’ve fixed that. Here’s how. www.joshuapullen.com/blog/tractio...

submitted 17 days ago • 0 comments

I put together an annotated version of the new Claude 4 system prompt, covering both the prompt Anthropic published and the missing, leaked sections that describe its various tools It's basically the secret missing manual for Claude 4, it's fascinating! simonwillison.net/2025/May/25/...

submitted 23 days ago • 12 comments

A few weeks ago, I visited 16 classrooms to make observations. The most breathtaking anecdote I witnessed was an extreme form of multitasking from a special education teacher who coached two students through their essay writing simultaneously. It was wild. 1/2

submitted 27 days ago • 1 comment

you can now change my avatar!!! (finally managed to deploy it) you can even check my avatar gallery, stored in my PDS :) please try it whenever you visit my profile 🙏 avatar.nornoe.net

submitted 32 days ago • 13 comments

Have you ever scanned a dirty or crumpled up QR code, *certain* it wouldn't work, and then it instantly does? They're built to be really resilient! Here's a guide I put together, full of interactive visuals to show the design choices in the QR spec. perthirtysix.com/how-the-heck-do-qr-codes-work

submitted 33 days ago • 1 comment

I learned the hard way: If you are making a tool for teachers, try to avoid distributing it as a Chrome extension. Publish to the web instead. www.joshuapullen.com/blog/teacher...

submitted 34 days ago • 0 comments

I am strongly in favor of anything that would make build-tool-free web development easier, for learning purposes if nothing else.

submitted 47 days ago • 1 comment

New experience for me: watching a large number of people use what I built, taking notes, and am changing it accordingly. This is the first time I’ve ever identified as a designer, not just a programmer.

submitted 63 days ago • 1 comment

Will you wishlist Replicube? “Signs point to yes” s.team/a/3401490

submitted 67 days ago • 16 comments

I just published a new seating chart chrome extension called Shuffle Buddy. When I tested it with teachers, I was caught completely by surprise. www.joshuapullen.com/blog/you-don...

submitted 66 days ago • 0 comments

iykyk

submitted 69 days ago • 0 comments

After getting some rest, I am in awe of everyone who continues to lift their voice and speak out. This is a moment for our country, and we must make a choice about the America we want to be.

submitted 76 days ago • 4384 comments

Looking back at "Clown School", an interactive math textbook I started building a while ago, and I am *shocked* by how good it is. Past me cooked. Are there people who would pay for this? clown-school.mrpullen.com/real-analysi...

submitted 87 days ago • 0 comments

Y’all can hate on vibe coding all you want but I’m a freaking hero to my kids for making a math video game

submitted 91 days ago • 9 comments

. @anselm.io

submitted 93 days ago • 1 comment