EUDAX Labs Junior Science Magnet Set for Education Science Experiment Tools Icluding Bar/Ring/Horseshoe/Compass Magnets

I’m a physicist who spent over ten years developing high-speed magnetically levitated flywheels. I just needed a marked color magnet so bought this kit for next day delivery. I noticed that someone had trouble levitating the spindle because a rubber band was missing (any small rubber band will work). But another thing to be aware of is that the 4 stationary magnets may not stay fixed in the base (with pole orientation all pointing the same direction). Slipping a couple sheets of paper when the magnets are pressed into the base will help tightly secure them (see photo). And the magnets need to all be pressed all the way down, at the same height. Also, playing around with the axial orientation of the magnets on the rotating spindle makes a big difference in the stability of the unit (rotor spindle magnets need to also point the same direction as base). I like teaching physics and think this is a fun little package for children to explore, and recommend it. An interesting “thought experiment” is to visualize the magnetic flux field lines (think of the orientation of the iron filings by the bar magnets). This helps to understand how the spindle stays levitated (by imagining the field lines); and why the spindle is only stable with one point fixed (the pin-spindle interface). Otherwise, the stationary magnetic suspension here is unstable.

Based on reviews I wasn’t sure of the quality but I like it. It’s not super good quality but I could use for the science experiments for my kid. I feel it’s a good and usable magnet set.

This year for remote learning, I decided to supplement some of the material by providing hands-on learning for my second grader. I remember as a kid being given a kit of magnets similar as this to play with and it helped me understand how magnets work.This kit is very durable; my five year old accidentally dropped the horseshoe magnet on our hardwood floor and it survived with no visible damage. The iron filings take a bit of practice to be able to show the magnetic field but it is possible (we used the straight magnet). The circle magnets work as you would expect except when using the levitation portion. We found that we need four rubber bands and they only supply three. Due to this (as seen in the attached picture), the device is drawn to the side instead of levitating in the middle. This is the only part of the kit that does not work as expected. All in all I would recommend this kit to anyone who wants to give their child hands-on education on magnets. Your kids can explore alone or with your assistance, as the kit is durable for elementary aged hands.

Much smaller magnets than I really was expecting. Still great for kids who like to learn and are interested in science

This worked great for my daughter's science fair project.

I don't know why but this was the only set available with those typical horseshoe magnet which I wanted, I bought the whole set which I didn't mind too much because the other pieces were fun, but this whole thing is extremely poor quality, the box latch was broken, the horseshoe magnet was broken as well.

The whole box could practically fit on a dollar bill… it is literally that small. The compass is about the size of a quarter. There is a lot of over spray when the magnets were painted, but the magnets seem plenty strong- definitely stronger than an average refrigerator magnet. This is a perfect set for my homeschooled first grader!

I was skeptical to purchase this because of all the bad reviews. However I am happy I did, sure the set is somewhat small, but it literally tells you the measurements in the description…The magnets work perfectly fine, I am actually impressed with how powerful the small circular magnets and the horseshoe magnet are. The paint does chip off if you are rough with them, but for the price, this is a great deal.