Did you find any other items?

Well, did you find any more objects at home and test whether the center of gravity was exactly or approximately in the middle?

Then take a photo of the object right away. Upload it and write whether the center of gravity was approximately in the middle. Of course, you can also take a photo of yourself balancing the object on your finger. But make sure that only your finger and the object are visible, and not yourself.

I’m excited to see what you found :)!

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How is a helicopter made?

Lego-Hubschrauber

Hi everyone,

have you ever wondered how things are made? How does, for example, the idea of a helicopter in your head turn into a real product? Imagine you want to build such a toy helicopter or even manufacture a real helicopter. How would you proceed?

Let’s collect ideas together here in the comments.

I’m excited to see what you come up with!

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Behind the scenes

Hi everyone,

this time, creating the new puzzle (the airplane puzzle) was very different from usual. Why? Because in March 2020, the lockdown due to Corona came, and we all had to work from home. But that didn’t stop me, of course 😉

And working from home on the balcony has its own charm 😉

I could no longer shoot the videos with our media producer Stephan as usual. This means I had to figure out how to shoot videos myself with what I had at home. So Stephan wasn’t there to hold the camera, and I didn’t have any accessories, like a tripod. But in true Kniffelix spirit, that you can experiment with household items, I experimented this time with how to shoot videos for a new Kniffelix puzzle using things from around the house.

I want to show you what I came up with and built for this with two little behind-the-scenes glimpses. Have fun watching!

And then I needed a solution to film the work on a suspended airplane…

Have you ever built a tripod from household items, or perhaps something else? If so, please describe it briefly in the comments or upload a photo of it. (If you are reading this report in the news, click on the title of the post above to comment.) I’m curious.

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Plants and their soil

Wein und Lehmboden


Hello dear ones!

Every plant has very different preferences for its environment. One prefers it drier, the other feels really comfortable in wet soil.

I was recently on vacation in Bordeaux, a warm region where a lot of wine is grown. There I learned that wine thrives best on loamy soil. This can retain water well, so that the roots do not dry out in hot temperatures and the young vines remain “fresh”.

Do you know of any other plants that prefer a very specific type of soil? Feel free to do some research on the internet (or in your local hardware store ;)) and write me your findings in the comments.

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Which soil can absorb water best?

Water-Soil Experiment


Hello everyone!

What could you observe during your water flow experiment?

How much water could your different soils absorb? How much water seeped out of the samples? How fast did the water flow?

Which of your soils would you recommend for growing flowers and which not so much?;)

I’m curious: Write your experiment results in the comments. Did you perhaps take a picture of your experiment? Then you can upload it.

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More aircraft models

Hi everyone,

Pia was particularly diligent with us and simply built several different airplane models. How are things with you? Have you ever built another airplane? Or do you feel like trying out more models? Whether made of cardboard, sticks and fabric, or a paper airplane, it doesn’t matter 😉 Be creative!

Upload a photo of your other model and tell us if it flew well.

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How did you like the airplane puzzle?

Source: Sebastian Krebs (License: CC BY)

Hi everyone,

you did it, the airplane puzzle is finished 🙂 But how did you like it?

Please briefly describe what you particularly enjoyed, what you learned, what you didn’t like as much, or what you would have wished for.

I’m very curious how you liked it.

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Adjustment of the flyer

Hi everyone,

well, were your adjustments in building the flyer successful? Did you use playdough to shift the center of gravity, or another material?

Was it difficult to get the right amount of playdough or other material to place the center of gravity centrally over the wings?

What does your finished flyer look like? Feel free to upload a photo and share it with others.

And most importantly, how did the flying work out? How did the flyer fly now? Does it fly further if you throw it straight forward or slightly upwards? And did it work better with a lot or a little momentum?

I’m excited to hear what you report.

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What is wrong with the airplane?

Source: Sebastian Krebs (License: CC BY)

Hi everyone!

Well, did you spot the mistake? What’s wrong with this airplane? What can you see in the picture?

Do you know what else plays an important role when flying?

I’m excited to see what you observe!

Before you write a comment, please take another look at the game rules.


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