Take the mess out of magnetism! Convenient iron filings are encased in durable plastic, allowing children to explore safely. Set of five blocks. 3"L x 2"W.
I have used iron filings in science with our magnetism unit. They can be very messy and easy to spill. These allow students to see the magnetic poles without the mess. Will last a long time.
Great to Use with Magnetic Wands
The cases are on the small side, but are adequate for students to use with the magnets. Not sure the plastic cases will withstand the test of time.