Scientists classify everything! PreK scientists continued their study of the ocean with a lab that focused on shells. At the end of lab, they were each given a bag of shells to classify by physical properties of their choice- types, color, size, texture, luster, etc.
To conclude lab, I took our hermit crabs out of their habitat for us to observe.Hermit crabs are born in the ocean and find a shell in which to live. They have five pairs of legs and their eyes are on stalks. They are nocturnal, oviparous, and omnivores. Although terrestrial, they breathe through gills and require both freshwater and saltwater to keep their gills wet (a fact that many pet owners don’t realize.)
Have you ever seen a hermit crab change shells?
This scientist won the opportunity to be my lab helper for the day. We fed the lab animals, went to kindergarten play practice, put up an International Day bulletin board, and set-up, taught, and cleaned-up four labs. He ate lunch with the other teachers and was able to choose selections from the adult salad bar. What a fun day for us both!
When electricity flows in a wire, a magnetic field appears. This discovery led to the development of electric motors. They can be found in many electronics today.
Third grade scientists made a simple electromagnet which is a temporary magnet that is made by coiling wire around an iron core. When current flows in the coil, the iron becomes a magnet.