Large Ferrite Block Magnet 50mm
Large Ferrite Block Magnet 50mm
Student's name
First and last name, and class if you know it. This goes on the pack label.
Pickup available at Mega DC – Tweed Heads South
Usually ready in 24 hours
$2.80, poles printed on it, and too big to swallow
A painted ferrite bar magnet, 50 x 15 x 10mm, with red and blue poles stamped N and S.
This is the magnet to buy for young children, and the reason is size. Everything else in the magnetism range carries an under-8 ingestion warning; a 50mm painted block does not, because it will not go anywhere. That makes it the one a prep teacher can actually put on a table.
The printed N and S are doing real teaching work. A child holding two blocks discovers that red-to-blue pulls and red-to-red pushes, and the letters give them the vocabulary at the same moment they feel the force. No worksheet required.
Ferrite has high coercive strength, which in practice means it stays magnetised through years of being dropped, banged together and left in a tub with everything else.