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.

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

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Soil between the fingers

Kniffelix Fingerprobentest

Hello everyone!

So, what did you find out from the finger test?

How did the soil feel in your hands?

Was it rough and gritty like sand,
powdery like loam,
or smooth and sticky like clay?

Were you able to shape the soil well, or did it just trickle through your fingers?

What type of soil was your sample? From what location did you take the sample? Write me your test results in the comments. You can also upload a photo of your soil location.

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

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Ugly greenery or beautiful plant?

Plant seedling in hand

Hello dear ones,

I don’t know either, I somehow don’t have a knack for greenery 🙁 My plants at home often die. In the meantime, I have a lot of artificial flowers in my apartment, so luckily not much can go wrong…

Can’t you really get along with plants either? Or does everything grow and thrive with you? Are you plant lovers with a green thumb? Do you have a favorite flower or tips for me?

Tell me in the comments 🙂

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

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Dancing cornstarch

Did you enjoy investigating the cornstarch? We’ll show you how to make your cornstarch mixture dance:

Do you also want to make your cornstarch dance? Then let’s go! For the experiment you need:

When force is applied to the cornstarch, for example, when you hit it with a spoon, it becomes solid. But what happens when you play sounds to it? At what pitch does it really start to dance? Does it prefer low or high tones?

Write your observations in the comments. Can you explain the cornstarch’s preference?

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

In search of non-Newtonian fluids

various non-Newtonian fluids

Hello dear ones,

you have already learned about a number of non-Newtonian fluids. Do you know of any other fluids that do not follow Newton’s law? Go on a research mission and tell the others what you have found out:)

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

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What have your investigations revealed?

Ketchup and cornstarch-water mixture

Did you process the ketchup and the cornstarch-water mixture properly? 😉
What did you find out during the stirring, beating, and molding tests?
Do the two liquids behave similarly or completely differently?

Write your observations in the comments.
Do you have proof pictures of your results? 😉 Then let the community participate and upload them.

I’m excited 🙂

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

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Ketchup must go on it!

Toast with Ketchup Face

Hello dear ones,

when I order a portion of fries, ketchup is a must 😉 Do you also have a dish you can’t do without ketchup?

Sandwich, pasta or bratwurst?

Or are you more of a mustard or mayonnaise person?
Write to me in the comments what your stomach desires 😉

Before you write a comment, take another look at the rules of use.

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Further yeast experiments

In this section, you will find yeast experiments that student groups can also conduct in the classroom independently of the Kniffelix missions. For each experiment, there is a website for students that explains the experiment in a target-group-appropriate manner, as well as accompanying material for educators. The tasks for the experiments are based on the school curricula.

Feel free to share your experiences with the experiments in the comments.

Group Experiments with Yeast
Searching for the optimal temperatureSubject: Math, Biology
Topic: ecological tolerance (recommended for lower secondary school)

To the experiment Accompanying material
It's gonna be hot!Subject: Biology
Topic: Enzymes, ecological tolerance, RGT rule (recommended for upper secondary school)

To the experiment Accompanying material
Subject: Biology
Topic: Enzymes, sugar metabolism in cells (recommended for upper secondary school)

To the experiment Accompanying material
That's sweet!Subject: Biology
Topic: Enzymes, Michaelis-Menten kinetics (recommended for upper secondary school)

To the experiment Accompanying material
These Yeast! materials were created in cooperation with the upper secondary ecology research profile of Goethe Schule Harburg under the direction of Olaf Zeiske. Here’s a look behind the scenes.

Help with experimenting

Felix gets a light bulb moment

Does your experimental result look different from the solution image?

Then you have been led astray. Various factors could have influenced your result. In the image gallery, you will find clues as to what might have influenced your experiment.

  • Einflussfaktor 1
    Einflussfaktor 1

Try the experiment again and consciously pay attention to these influencing factors.
The experiment still doesn’t work? Then write to us about your case.

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