I bought these last year – handy for seeing magnetic field lines without messy iron filings.
And while you are on the topic of magnetism, the floating paperclip never fails to engage students of all ability.
I bought these last year – handy for seeing magnetic field lines without messy iron filings.
And while you are on the topic of magnetism, the floating paperclip never fails to engage students of all ability.
Fiendishlyclever 