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Tooth and nail - Team A

Autor:Susanne Digel
Before they start building, Sarah and Max need to keep track of the remaining material.

Nails

Max‘ Dad already bought a package of nail, but it doesn't say how many nails are inside. Only the total weight of the package is given. That makes the think... are there 100 inside, or rather 1000? Further research is needed! Take the unlabeled package of nails out of the box.
MATERIAL: unlabeled package of nails
MATERIAL: unlabeled package of nails

Take a close look at it! Now everyone make an estimation on how many nails it contains:

MATERIAL: 5 packages of counted nails
MATERIAL: 5 packages of counted nails

Take out the counted packages of nails one by one and weigh them in your palm. Compare the number of nails with their perceived weight. Write down your observations.

Which variables correlate in this experiment? Write down a sentence describing the correlation.

Beam

Som uch for the nails, put the packages aside for the moment. Max and Sarah are now planning the roof. Max' father suggests a half-timber (see picture below). He read about it in a DIY guidebook.
Fachwerk
Fachwerk
But how to plan and build such a construction? The easiest kind of half-timber is like a "card house". Sarah wants to visualise it through a model with matches.
half-timber model out of matches
half-timber model out of matches

Estimate without counting how many matches are needed for the half-timber model above.

Now take the matchbox out of the box and build your own half-timber model WITH ONE STORAGE. Expand your model to two storages and observe how many matches are needed additionally. Write down your observations.

Which variables correlate in this experiment? Write down a sentence describing the correlation.

Correlation, Correlation, Correlation

Max and Sarah feel somewhat dizzy and are having a hard time keeping the different variables and correlations apart. They need your help.
Sort it out for them:

Look back in your notes what you wrote about the different correlations. There were discs, cubes, a vessel of paint, nails and beams! Try to build pairs according to similar correlations and write down what they have in common. One material does not fit - describe what is different with this correlation. Which pairs did you come up with?

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