and also Body systems and organs: Covering system, skeletal system, muscular system, circulatory system, respiratory system, digestive system, excretory system, ... system (Step-by-step science series) Really long title for a little paperback workbook!
|KID 1 adds ribosome sprinkles|
|KID 2 drops in mitochondria gumdrops|
|Our cells are ready for cryofreezing...or cryofrigerating in our case. |
|We put a cell on a glass plate and held a light under it...cool, huh?|