Egg in vinegar experiment

Interesting, the experiment they send us at my daughter’s school. It is a simple experiment to do with our children and introduce them to the wonderful world of science, although with this we may be conditioning them.

What happens when you put an egg in vinegar

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Build Rosetta and Philae with your children

If you want to spend a weekend teaching your child more about space, astronomy, science and aeronautics, I let you a collection of resources that ESA (European Space Agency) has hung for teachers and children.

Model Rosetta and Philae papercraft

You can take advantage of the fact that the subject is not very old to introduce to your child. That an object has been sent from the earth to a comet at 500 million km and that it travels at 60,000 km / h because it has to impress you. Well, this is what the Rosetta Mission has done with the Philae probe.

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PCL or polycaprolactone (Plastimake, InstaMorph, Friendly Plastic)

If this is the first time you hear this name, you are in luck because today you will be surprised. The PCL is a thermoplastic plastic that we can mold with our hands when heated around 60 ° C and that hardens in the cold and we can repeat the process again and again, hundreds of times.

Plastimake, instamorph and friendly plastic

When it cools it becomes hard and tough, it does not conduct electricity or heat, it is not toxic and it is biodegradable. It seems the perfect solution for our inventions does not?

It reminds me of Sugru, but being able to reuse it and it seems to be more difficult to manipulate. Although of course being able to reuse it again and again is a very important point.

Look how the magic happens …

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How to build a homemade Rubik’s cube to help a mathematical school project

Some years ago, David, an elementary School teacher wrote me asking if I can help them designing a 2×2 Rubik’s cube for children.

Rubik  cube project 2x2 for kids

They want a mathematical project for kids based on Rubik cube. Fastly I answered with some links to learn to build 2×2 and 3×3 Rubik’s cube with dices and magnets. The are really cool hacks. But David needs something easier and cheaper. They came with simple premises.

  • Children of 10 years must be able to build it, so we forget about elaborate and dangerous tools and processes
  • and it has to be cheap, very cheap

although everything must be said they just wanted a minimally manipulable cube.

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