... invent: Electromagnets can take care of business
Engineers can find out how to improve upon a good idea using experiments. Now we must consider what can be changed on the electromagnet and try out the various possibilities.
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Experiment Electromagnet
Change the lengths of the wires and the size of the iron core and count how many paper clips can be held. Make a table and write down your results.
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Work together with each other. Teamwork has many advantages here.
What can be learned from this experiment. Discuss with the others what is important for constructing a magnet.
What does the strongest electromagnet look like?
Using the available materials, construct the strongest electromagnet, count how many paper clips this supermagnet can hold, and send us a photo.
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...invent: Group crane with an electromagnet
Teamwork is needed for this crane. A nice crane for exciting group competitions. The original idea is attributed to the educator Friedrich Wilhelm August Fröbel (1782-1852).
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Here a group attempts to collect from the floor and place back in the box 10 scattered paper clips as quickly as possible.
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The electromagnet is remote controlled.
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Your electro-crane
Construct a crane. Suspend an electromagnet on the crane's arm. Now you can collect and transport iron objects by remote control.
Invent a tricky game or task for other kids.
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Here are several ideas on how you can make the connections.
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Magnetic magical to and from
For what can you use the back and forth movement shown in the film?
Who constructs the most exciting object? Send us your picture or a short video.