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Stephanie Simoes @critikid.bsky.social · 2h

Can you solve the red queen puzzle? Solution and more puzzles: critikid.com/puzzles/red-...

Stephanie Simoes @critikid.bsky.social · 01/10/2026

Critikid’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/teens

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Stephanie Simoes @critikid.bsky.social · 30/09/2026

In 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!

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Stephanie Simoes @critikid.bsky.social · 30/09/2026

Pseudoscience 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: critikid.com/how-to-spot-...

critikid.com

How to Spot Pseudoscience - Critikid

An explanation of what pseudoscience is and how it differs from bad science, and a list of pseudoscience red flags to look out for.

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Stephanie Simoes @critikid.bsky.social · 29/09/2026

This 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! hbsp.harvard.edu/product/I009... Try out A Statistical Odyssey (for ages 13+): critikid.com/courses/stat...

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Stephanie Simoes @critikid.bsky.social · 29/09/2026

Can 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: critikid.com/puzzles/roll...

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Stephanie Simoes @critikid.bsky.social · 28/09/2026

All/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.app

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Stephanie Simoes @critikid.bsky.social · 28/09/2026

Research 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: critikid.com/worksheets/r...

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Stephanie Simoes @critikid.bsky.social · 27/09/2026

Can you solve the gummy bear puzzle? Thank you to Henk Tijms for sharing a variation of this puzzle with me.

Text saying: There are 10 gummies in a bag.
Two of them are orange and the other eight are yellow.

You will take gummies from the bag, one at a time at random, and eat them until you take out a gummy of the other colour. When this happens, you put it back in the bag and start over.

What are the chances that the last gummy you eat is orange?

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Stephanie Simoes @critikid.bsky.social · 27/09/2026

Right 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?

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Stephanie Simoes @critikid.bsky.social · 26/09/2026

Can you solve the "Flip Until Heads" puzzle? Solution and more puzzles: critikid.com/puzzles/flip...

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Stephanie Simoes @critikid.bsky.social · 26/09/2026

Something that people often forget: Explaining something is different than advocating for it.

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Stephanie Simoes @critikid.bsky.social · 25/09/2026

Pseudoscience 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.

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Stephanie Simoes @critikid.bsky.social · 25/09/2026

I 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. allsome.app/collection/h...

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Stephanie Simoes @critikid.bsky.social · 25/09/2026

Working 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!

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Stephanie Simoes @critikid.bsky.social · 24/09/2026

We're looking for our first member! Allsome.app

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Stephanie Simoes @critikid.bsky.social · 24/09/2026

All/Some now has two two thematic collections for members! I'm working on adding more about history, geography, astronomy, art, and more.

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Stephanie Simoes @critikid.bsky.social · 24/09/2026

Critikid'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: critikid.com/courses/form...

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Stephanie Simoes @critikid.bsky.social · 23/09/2026

Been spending most of my week writing and checking puzzles for All/Some. It's a mental workout but also very fun!

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Stephanie Simoes @critikid.bsky.social · 22/09/2026

Can you solve the balls and boxes puzzle? Solution: critikid.com/puzzles/ball...

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Stephanie Simoes @critikid.bsky.social · 22/09/2026

For 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.app

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Stephanie Simoes @critikid.bsky.social · 22/09/2026

Got 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.app

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Stephanie Simoes @critikid.bsky.social · 21/09/2026

We 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.app

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Stephanie Simoes @critikid.bsky.social · 20/09/2026

Developing 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.

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Stephanie Simoes @critikid.bsky.social · 19/09/2026

I'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. 👇

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Stephanie Simoes @critikid.bsky.social · 18/09/2026

1. 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 animals

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Stephanie Simoes @critikid.bsky.social · 18/09/2026

This review was about a book published in 2020, two years before ChatGPT was released. I am so tired of the AI witch hunt.

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Stephanie Simoes @critikid.bsky.social · 18/09/2026

Teach your grades 3-7 students about ten common logical fallacies with these engaging and easy-to-use lesson plans, worksheets, and assessment. Learn more: critikid.com/worksheets/l...

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Stephanie Simoes @critikid.bsky.social · 17/09/2026

Can you solve the crates puzzle? Solution: critikid.com/puzzles/crat...

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Stephanie Simoes @critikid.bsky.social · 16/09/2026

I just posted my first long-form YouTube video! This one is for people who are interested in probability puzzles. I would really appreciate some feedback! youtu.be/Q8eNbuSE9ZU

youtu.be

Why People Disagree About This Probability Puzzle

YouTube video by Critikid

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Stephanie Simoes @critikid.bsky.social · 16/09/2026

Critikid's newest bundle helps children ages 7-9 build critical thinking and research skills. Topics Include: -Asking good questions -Finding information -Fact-checking -Busting superstitions -Facts vs. opinions -Different perspectives -Probability basics Learn more: critikid.com/bundles/elem...

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Stephanie Simoes @critikid.bsky.social · 15/09/2026

While I support teaching kids about logical fallacies, I believe that gaining a superficial knowledge of logical fallacies can do more harm than good. Here are three risks to watch for: critikid.com/teaching-log...

critikid.com

3 Ways Teaching Logical Fallacies Can Backfire - Critikid

Teaching kids about logical fallacies can help them reason more clearly, but shallow fallacy lessons can lead to confusion, overuse, and less productive conversations.

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Stephanie Simoes @critikid.bsky.social · 14/09/2026

Can you solve the prize box puzzle? Solution: critikid.com/puzzles/priz...

Logic puzzle on a pink background. Text reads: “One of these boxes has a prize. I told Astrid only the color of the box. I told Bill only the symbol. Astrid said, ‘I don’t know which box it is, but I know that Bill doesn’t know.’ Bill said, ‘At first I didn’t know, but now I do.’ Astrid: ‘Then I also know.’ Which box has the prize?” Below are 10 boxes: blue heart, blue clover, green star, green lightning bolt; purple heart, purple circle, purple diamond; yellow circle, yellow clover, yellow star. critikid.com/puzzles.

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Stephanie Simoes @critikid.bsky.social · 13/09/2026

If you have trouble searching for any of these, direct links to all of them can be found here: critikid.com/logical-fall... I would love to add new resources to this list, so if you have anything to recommend, please leave suggestions in the comments.

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Stephanie Simoes @critikid.bsky.social · 12/09/2026

Help little ones learn that changing your mind with new information isn't a weakness - it's a superpower! I wrote Milo's Mind to help children ages 6-9 discover how critical thinking and the courage to rethink what you believe can turn you into a superhero. Get it: critikid.com/milos-mind-r...

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Stephanie Simoes @critikid.bsky.social · 12/09/2026

This screenshot is from a Charlie Kirk colouring worksheet that I found shared in a homeschool group. I've been posting about cases of people not checking AI-generated citations in legal briefs and scientific papers. But there's another place where this happens a lot: educational resources.

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Stephanie Simoes @critikid.bsky.social · 11/09/2026

This fallacy is so common I think it's worth giving it its own name. Byproduct fallacy: Assuming that something is not good for you because it is a byproduct.

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Stephanie Simoes @critikid.bsky.social · 11/09/2026

Critical Thinking for the Digital Age is a 16-week homeschool course that prepares teens to think critically about what they see online. Teens learn to navigate the online world responsibly through reading, writing, videos, puzzles, quizzes, and projects. Learn more: critikid.com/bundles/crit...

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Stephanie Simoes @critikid.bsky.social · 11/09/2026

Working on my first long-form YouTube video. Subscribe if you want to see it when it's ready! Search "Critikid" or click www.youtube.com/@critikidvid

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Stephanie Simoes @critikid.bsky.social · 10/09/2026

Someone messaged me asking if I think arguments saying that homosexuality is not immoral because some animals do it is a fallacy. Not only do I think it's a fallacy; I think it's a dangerous argument to make.

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Stephanie Simoes @critikid.bsky.social · 09/09/2026

The number of fake AI-generated citations being found in legal briefs and scientific papers is highlighting a problem that surely predates AI: people don't check things well enough.

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Stephanie Simoes @critikid.bsky.social · 09/09/2026

I keep coming across criticisms of vegan "meat" products by omnivores like: "Why would vegans want their food to tase like meat?!" I wonder: Are these comments disingenuous, or are these people genuinely unaware that for many vegans it's an ethical choice unrelated to to the taste of meat?

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Stephanie Simoes @critikid.bsky.social · 09/09/2026

One of the most disturbing applications of a logical fallacy is committing the appeal to nature fallacy about morality. Just because other animals do something doesn't mean we should accept humans doing it.

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Stephanie Simoes @critikid.bsky.social · 07/09/2026

Can you escape? critikid.com/escape

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Stephanie Simoes @critikid.bsky.social · 05/09/2026

I just published a blog post listing resources for teaching logical fallacies to kids and teens. If you have suggestions of resources to add, please leave them in the comments! critikid.com/logical-fall...

critikid.com

6 Resources for Teaching Logical Fallacies to Kids - Critikid

Discover resources for teaching logical fallacies to kids and teens, including courses, videos, podcasts, activities, and lesson plans.

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