Redditor spacecatapult is a technology teacher at an elementary school. He/she posted this time-lapse of a project called Pixel Place. Each student places a "pixel," or a small piece of paper, on the board during every class. You can see that they started out with no direction at all, but as time passed, they started working as a team. Spacecatapult took a picture every day.
I've branded this activity as "Pixel Place" because it allows students to make a physical connection with the term pixel. It's actually been very helpful when we talk about pixels in the context of coding and computers. It's also been great for all of the social reasons you are likely considering in your thesis already. At the start of the year, we mostly just had chaos. Students wanted to just make their mark somewhere. Students are seeing that they can do more and better things when they work together. They even leave sticky notes on the walls to communicate idea with students from other classes - this is truly a collaboration between 500 students. There is also a real sense of a "greater good". Sometimes kids are upset by random pixels or attempts at ruining something made by others. The larger group always seems to value making it look good though, so most vandalism is quickly undone. It's been pretty powerful, especially for something that students only spend about 30 seconds a week doing.
-via Kevin O'Connor
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Like the mystery of the chicken and the egg, we finally have an answer! It is, in fact, a rabbit with a beak sticking out of its head! We will never be fooled again!
if you have ever seen a rabbit or a duck you will notice that it looks like neither a rabbit nor a duck. it especially could not be a duck, the "beak" looks ridiculous.
i don't think this illusion has ever demonstrated any psychological effect other than that badly drawn images are hard to understand.
:(