Engineering · Make
What can one fold change?
How can I compare two paper shapes without claiming more than I tested?
Sketch or compare a flat paper strip and the same strip with a shallow fold. Define a small observation before drawing a conclusion.
15–25 minutes, or two labelled sketches for a first try. More time is optional.
Start here
Sketch a paper strip resting across two folded-paper pads on a flat desk. Label a gap of about 4 cm between the pads. You can complete the whole activity as a drawing.
Use your idea or the example below. Talk, write, draw, point or listen first. You can stop after one step.
Try it your way.
Choose a small comparison
If making the model, fold two paper pieces into matching low pads, less than 1 cm high, on the same flat desk. Leave a gap of about 4 cm. Lay an approximately 8-by-4 cm paper strip across them with both ends supported. Use paper only and add no objects or weights.
Define the observation
Version A is flat. Before trying it, choose what to notice: whether the middle stays clear of the desk or touches it during a slow count of five. Record what happens, or leave the result unknown if you are sketching.
Change the shape
Use the same strip. Fold it once along its long centre line, then open it into a shallow V. Rest its ends on the same pads with the same gap. Keep the paper and supports unchanged; observe the same thing, with no added load.
Write a limited conclusion
Describe both versions, including an unchanged or uncertain result. Explain what you changed and what would need a different test. A paper model is not a design for a bridge anyone can use.
One possible version
Fictional example: two clear gaps
This is an invented recording example, not an experiment Horizon performed. It shows how an unchanged result can still be recorded honestly.
- A: flat strip; the fictional record says its middle stayed clear of the desk for a count of five.
- B: the same strip with a shallow lengthways V; the fictional record also says its middle stayed clear.
- The paper, pads and gap stayed the same. Only the strip's shape changed; the example shows no difference on this chosen observation.
Neither entry establishes load capacity or a strongest design. Paper type, dimensions and observations matter; your model may behave differently.
Something to keep?
Did my conclusion stay within the observation I actually made?
You can keep a question, a sketch or a change of mind. A finished product is optional.
This opens an editable starter in your project tools. It asks before replacing open work. Choosing it does not save or share your work automatically.