Exploratorium
Exploratorium: Curie Temperature
In this experiment, students experience the Curie point--and what happens when a piece of iron gets too hot to attract a magnet.
Science and Mathematics Initiative for Learning Enhancement (SMILE)
Smile: Electromagnets (Grades 3 and 4)
This lesson plan helps young scholars to understand the difference between magenets and electromagnets. They will also create an electromagnet.
Science and Mathematics Initiative for Learning Enhancement (SMILE)
Smile: Fish and Clip
Primary activity to help "students understand some of the characteristics of magnets." Would work well in conjunction with a theme on underwater creatures or fish.