Founder of Critikid.com, a critical thinking site for kids and teens. Posting about: - Science, data, and media literacy - Clear communication - Logic, puzzles, and paradoxeshttps://bsky.app/profile/critikid.bsky.socialhttps://bsky.app/profile/critikid.bsky.social/post/3mwvdexw3s22yA commenter wrote: "I don't have beliefs." Someone else agreed: "My neither." The funny thing is, these are beliefs.02 Oct 2026 12:04 +0000at://did:plc:i6gue2stipw4ht2jduwhj3em/app.bsky.feed.post/3mwvdexw3s22yhttps://bsky.app/profile/critikid.bsky.social/post/3mwuj6bhzc22aCan you solve the red queen puzzle? Solution and more puzzles: https://critikid.com/puzzles/red-queen-puzzle02 Oct 2026 04:15 +0000at://did:plc:i6gue2stipw4ht2jduwhj3em/app.bsky.feed.post/3mwuj6bhzc22ahttps://bsky.app/profile/critikid.bsky.social/post/3mwrw3ch4422xCritikid’s Teens Bundle includes online interactive courses, worksheets, and lesson plans that help teens develop their problem-solving skills and make smart decisions. Your purchase includes lifetime access to all included resources. Learn more: critikid.com/bundles/teens01 Oct 2026 03:28 +0000at://did:plc:i6gue2stipw4ht2jduwhj3em/app.bsky.feed.post/3mwrw3ch4422xhttps://bsky.app/profile/critikid.bsky.social/post/3mwqkk66is22oIn order for us to keep All/Some daily challenges ad-free, we really need some more members! Members also get access to a lot more puzzles. To join, visit allsome.app and click anything with a crown. Thank you for your support!30 Sep 2026 14:29 +0000at://did:plc:i6gue2stipw4ht2jduwhj3em/app.bsky.feed.post/3mwqkk66is22ohttps://bsky.app/profile/critikid.bsky.social/post/3mwpjidxzek2uPseudoscience is not the same as bad science. Bad science is a faulty version of good science. It follows the scientific method, but it makes mistakes. Pseudoscience, on the other hand, is not science at all. Read more: https://critikid.com/how-to-spot-pseudoscience30 Sep 2026 04:37 +0000at://did:plc:i6gue2stipw4ht2jduwhj3em/app.bsky.feed.post/3mwpjidxzek2uhttps://bsky.app/profile/critikid.bsky.social/post/3mwo3p3jg322aThis is cool! I worked with IE Business School to adapt Critikid's "A Statistical Odyssey" into an online tutorial for university students, and it has just been picked up by Harvard! https://hbsp.harvard.edu/product/I0092E-HTM-ENG Try out A Statistical Odyssey (for ages 13+): https://critikid.com/courses/statistical-odyssey/lessons29 Sep 2026 14:58 +0000at://did:plc:i6gue2stipw4ht2jduwhj3em/app.bsky.feed.post/3mwo3p3jg322ahttps://bsky.app/profile/critikid.bsky.social/post/3mwmyf5sxqk2rCan you solve the coin rolling puzzle? You can check your answer with two round objects, as long as they have some grip. (Many coins tend to slide.) Solution and more puzzles like this: https://critikid.com/puzzles/rolling-coin29 Sep 2026 04:26 +0000at://did:plc:i6gue2stipw4ht2jduwhj3em/app.bsky.feed.post/3mwmyf5sxqk2rhttps://bsky.app/profile/critikid.bsky.social/post/3mwl2nxjsgs22All/Some now has four thematic collections for members! Members get access to all current and future collections. They also support us so we can keep the daily challenges ad-free for everyone. Tap anything with a crown to become a member: allsome.app28 Sep 2026 10:01 +0000at://did:plc:i6gue2stipw4ht2jduwhj3em/app.bsky.feed.post/3mwl2nxjsgs22https://bsky.app/profile/critikid.bsky.social/post/3mwkm6yjg6c2kResearch Detectives is a workbook for students in grades 2-5 that introduces research skills. It was written by astronautical engineer Chloe Lipton and edited by me. Learn more or get it for $10 US on Critikid: https://critikid.com/worksheets/research-detectives28 Sep 2026 05:42 +0000at://did:plc:i6gue2stipw4ht2jduwhj3em/app.bsky.feed.post/3mwkm6yjg6c2khttps://bsky.app/profile/critikid.bsky.social/post/3mwinnxbr2s26Can you solve the gummy bear puzzle? Thank you to Henk Tijms for sharing a variation of this puzzle with me.27 Sep 2026 11:03 +0000at://did:plc:i6gue2stipw4ht2jduwhj3em/app.bsky.feed.post/3mwinnxbr2s26https://bsky.app/profile/critikid.bsky.social/post/3mwhwoqc5d224Right now, allsome.app puzzles work in 3 steps: First you solve 2 circles, then 3, then 4, as shown in the pictures. Do you think it would be better if the first two steps were skipped and you just had to solve 4 circles right away?27 Sep 2026 04:12 +0000at://did:plc:i6gue2stipw4ht2jduwhj3em/app.bsky.feed.post/3mwhwoqc5d224https://bsky.app/profile/critikid.bsky.social/post/3mwht5pt6ms2lPeople often use the terms heuristics, cognitive biases, and logical fallacies interchangeably. While they can be connected, they don’t mean the same thing. https://critikid.com/heuristics-biases-fallacies27 Sep 2026 03:09 +0000at://did:plc:i6gue2stipw4ht2jduwhj3em/app.bsky.feed.post/3mwht5pt6ms2lhttps://bsky.app/profile/critikid.bsky.social/post/3mwflo2mrms2aCan you solve the "Flip Until Heads" puzzle? Solution and more puzzles: https://critikid.com/puzzles/flip-until-heads-puzzle26 Sep 2026 05:50 +0000at://did:plc:i6gue2stipw4ht2jduwhj3em/app.bsky.feed.post/3mwflo2mrms2ahttps://bsky.app/profile/critikid.bsky.social/post/3mwfewec6d22wSomething that people often forget: Explaining something is different than advocating for it.26 Sep 2026 03:49 +0000at://did:plc:i6gue2stipw4ht2jduwhj3em/app.bsky.feed.post/3mwfewec6d22whttps://bsky.app/profile/critikid.bsky.social/post/3mweaemales24Pseudoscience looks like science in that it uses technical language and "experiments," but without the safeguards that make science reliable. Like stage magic, it creates a convincing illusion. The difference is that magicians are honest about what they are doing.25 Sep 2026 16:55 +0000at://did:plc:i6gue2stipw4ht2jduwhj3em/app.bsky.feed.post/3mweaemales24https://bsky.app/profile/critikid.bsky.social/post/3mwdzvrmtj225I just published All/Some's latest collection for members: history! So now there are 3 collections for members: Everyday Concepts, History, and Biology. It costs $4.99 a month to get access to these collections, and I'm going to add more soon. https://allsome.app/collection/history25 Sep 2026 14:59 +0000at://did:plc:i6gue2stipw4ht2jduwhj3em/app.bsky.feed.post/3mwdzvrmtj225https://bsky.app/profile/critikid.bsky.social/post/3mwdtk3rhdc2mHere's a list I put together of simple critical thinking activities for teens. https://critikid.com/critical-thinking-activities-for-teens25 Sep 2026 13:05 +0000at://did:plc:i6gue2stipw4ht2jduwhj3em/app.bsky.feed.post/3mwdtk3rhdc2mhttps://bsky.app/profile/critikid.bsky.social/post/3mwd64fzvgs22Working on the newest thematic collection for allsome.app : History. I'm trying hard to make sure it covers history from all over the world. This image shows a small sample of the sets that will probably be included. Coming soon!25 Sep 2026 06:42 +0000at://did:plc:i6gue2stipw4ht2jduwhj3em/app.bsky.feed.post/3mwd64fzvgs22https://bsky.app/profile/critikid.bsky.social/post/3mwbahxfxpk2jWe're looking for our first member! Allsome.app24 Sep 2026 12:19 +0000at://did:plc:i6gue2stipw4ht2jduwhj3em/app.bsky.feed.post/3mwbahxfxpk2jhttps://bsky.app/profile/critikid.bsky.social/post/3mwb7iozyvk22All/Some now has two two thematic collections for members! I'm working on adding more about history, geography, astronomy, art, and more.24 Sep 2026 12:01 +0000at://did:plc:i6gue2stipw4ht2jduwhj3em/app.bsky.feed.post/3mwb7iozyvk22https://bsky.app/profile/critikid.bsky.social/post/3mwah23w5ms2hCritikid's "Logic for Teens" is a self-paced course with videos and activities that introduces students to symbolic logic. Your teens can try the first lesson, "What is an Argument?", for free: https://critikid.com/courses/formal-logic/lessons24 Sep 2026 04:44 +0000at://did:plc:i6gue2stipw4ht2jduwhj3em/app.bsky.feed.post/3mwah23w5ms2hhttps://bsky.app/profile/critikid.bsky.social/post/3mw6oekjjdk22Been spending most of my week writing and checking puzzles for All/Some. It's a mental workout but also very fun!23 Sep 2026 11:49 +0000at://did:plc:i6gue2stipw4ht2jduwhj3em/app.bsky.feed.post/3mw6oekjjdk22https://bsky.app/profile/critikid.bsky.social/post/3mw4oub57s224Can you solve the balls and boxes puzzle? Solution: https://critikid.com/puzzles/balls-and-boxes-puzzle22 Sep 2026 16:53 +0000at://did:plc:i6gue2stipw4ht2jduwhj3em/app.bsky.feed.post/3mw4oub57s224https://bsky.app/profile/critikid.bsky.social/post/3mw3vq4bgr22lFor now, All/Some is just a web app, but we're working on a mobile app version. There' also a membership for anyone who wants to keep playing after the daily puzzles. Members get access to extra puzzle collections that they can work through anytime. Try today's challenge: allsome.app22 Sep 2026 09:23 +0000at://did:plc:i6gue2stipw4ht2jduwhj3em/app.bsky.feed.post/3mw3vq4bgr22lhttps://bsky.app/profile/critikid.bsky.social/post/3mw3ahcxhlc2nGot my first bit of feedback: "Great game, great UI & layout, a bit buggy for me in getting stuck on loading screen & not registering some clicks." Did anyone else experience bugs? allsome.app22 Sep 2026 03:02 +0000at://did:plc:i6gue2stipw4ht2jduwhj3em/app.bsky.feed.post/3mw3ahcxhlc2nhttps://bsky.app/profile/critikid.bsky.social/post/3mvzwlhtass2hWe just released a free new logic puzzle game! Nobody has tried it yet (besides my husband and me), so I would really appreciate some feedback. The game is to make diagrams that show the correct relationships between the categories. Try it: allsome.app21 Sep 2026 14:33 +0000at://did:plc:i6gue2stipw4ht2jduwhj3em/app.bsky.feed.post/3mvzwlhtass2hhttps://bsky.app/profile/critikid.bsky.social/post/3mvwvmupln22aDeveloping the questions for the new puzzle app we're building is a workout for my brain! The first version (a web app) should be out in a day or two.20 Sep 2026 09:38 +0000at://did:plc:i6gue2stipw4ht2jduwhj3em/app.bsky.feed.post/3mvwvmupln22ahttps://bsky.app/profile/critikid.bsky.social/post/3mvu4kdntxk2sI've been compiling a list of critical thinking books for kids. In addition to general critical thinking books, I'm including philosophy and logic puzzle books. I've got 9 so far and am in the process of reviewing some more. 👇19 Sep 2026 07:04 +0000at://did:plc:i6gue2stipw4ht2jduwhj3em/app.bsky.feed.post/3mvu4kdntxk2shttps://bsky.app/profile/critikid.bsky.social/post/3mvs6mbrngc2p1. Apples, Fruits, Red things 2. Published authors, Teachers, Parents 3. Vertebrates, Mammals, Aquatic animals 4. Sports, Olympic sports, Team sports 5. Multiples of 2, Multiples of 6, Multiples of 12 6. Penguins, Birds, Flightless animals18 Sep 2026 12:35 +0000at://did:plc:i6gue2stipw4ht2jduwhj3em/app.bsky.feed.post/3mvs6mbrngc2phttps://bsky.app/profile/critikid.bsky.social/post/3mvroybaz722bThis review was about a book published in 2020, two years before ChatGPT was released. I am so tired of the AI witch hunt.18 Sep 2026 07:56 +0000at://did:plc:i6gue2stipw4ht2jduwhj3em/app.bsky.feed.post/3mvroybaz722b