The lessons that I used were from the following AIMS book that was purchased by my school system. I print out their resources at 78% so they will fit into their science notebooks.
There are some great videos on Brain Pop($) and Scholastic Study Jams(free).
Click images for link:
We have a few DVDs in our library.
Here are a few trade books. They are very basic and were used to reinforce the concepts.
They were written for younger grades. My favorite resource is Sciencesaurus which is written for grade 4-5. It covers all topics of Science.
The last day I set up a few stations. They used the iron filings to see the magnetic field, they experimented with the mineral magnetite, used a compass and a compass made with a needle and cork that floated on water.