Spaghetti tower

You will make a small tower and let go for ten seconds. Long spaghetti pieces look like useful beams, but they can bend and break under a load.

Build
Explorer
About 20 minutes

Grown-up needed: yes for setup, nearby supervision and clearing spills or loose pieces

What you need

Dry spaghetti
Marshmallows for joining
A timer handled by a grown-up

The rule

It must stand alone for 10 seconds.

How to do it

Ask a grown-up to select intact pieces and clear broken fragments.
Join three pieces with marshmallows to form a small triangle.
Add three short upright sides around the triangle.
Connect their tops with another triangle.
Add diagonal pieces between a top corner and a bottom corner.
Let go while a grown-up times ten seconds of standing.

Why it works

A rectangle made from loose joints can lean into a different shape without changing the side lengths much. A triangle cannot change that way unless a side bends or a joint moves. Diagonal pieces can therefore help a tower resist leaning. Real spaghetti is still flexible and breakable, and marshmallow joints can soften or twist. A wide base and short supported lengths reduce some of those problems. Your model tests both the pattern and its materials.

Make it harder

Use a slightly narrower base.
Add another level with short pieces.
Reach the same height with one fewer diagonal.

Ask Taz

Why does a diagonal help stop a tower leaning?
Why do long spaghetti pieces bend?
Why can a strong-looking joint still twist?

Ask Taz

For grown-ups

A grown-up should stay nearby and remove broken fragments before handling continues. Keep building materials out of mouths and away from younger children. Ask your child to identify the first bend rather than simply start again. Ask at dinner: “Was the weakest part a piece of spaghetti or a join?”

Taz is an AI and can be wrong, so stay close by. Read how safety works on Taz.

Show us yours

Film your hands and what you made, not your face or name. Ask a grown-up before posting anywhere else.

Questions parents ask

Do we need special equipment?

Use the household items listed above. Begin with a small attempt on a clear surface before trying any harder version. The listed time is an estimate, so leave room to rebuild or repeat without rushing.

What if the first attempt does not work?

Notice where the result first changed. Alter one feature, keep the rest similar and try again. An unsuccessful attempt can still give you a useful question.

Do we have to post the result?

No. You can show it to a grown-up at home. Online sharing is optional and needs the permissions in the privacy line above.

More to try

See all Taz Challenges, or look through the science labs. One place for every why. Ask for early access at aitaz.com

Try it in 3D: Bridge design.