We managed to get a pig bone from a butcher so they could really see the marrow. They were really amazed to feel that rock hard bone had such a soft middle! Of course they were sad to know that it came from a pig. My kids are just sweet that way. We tried to make a microscope slide but I am not too good at that yet so we did look up images on google and they were OK with that.
We also learned all about joints and synovial fluid. This is a ball and socket model from the Magic School Bus Kit. The kids all said it looked like one of theose old video game controllers, I think they meant atari lol. We also threw in a bit of nature with an owl pellet. I bought them online guaranteed to have a complete skeleton. You can see that here. They also noticed the "ball" at the end of the pig bone so that was a good hands on expierence foe them to have. We made sure to use and wiggle all our joints as well as we talked about them! They looked so silly. I will say they are enjoying science this year and seem way more into it than they have in the past. I have also started having Skyler do her writing here where I usually fill in lapbook pieces and labelings after she and I discuss it. She is 7 and getting older so it's time.
Here they are all working together on the lapbook pieces that go along with the book The Magic School Bus Missing Bones. They have gotten a kick outta hearing "beware old ghost John long white bones and the rest all gone"!! All in all it was a fun full week for science and I had fun too so that was even better!! I took a ton of pictures as usual and couldn't post them all but you can see them here.