30th January, 4:38 pm Jan 30th

I've been thinking about Logo/Turtle recently and was looking for some good Scratch-like environments for kids to get started in (besides Scratch's own Pen extension). Trinket looks interesting (as an intro to Python), but Turtle Blocks is just what I was looking for. The official hosted version is extremely slow to load for some reason, but it's open source - you can host your own copy and add extensions.

This was posted on Friday 30th January, 2026 at 4:38 pm Pacific.

Read more posts from January 2026.

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This is the personal website of Cal Henderson, Slack co-founder & CTO.

I give occasional talks, write code and sometimes articles.

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