A model of a microscopic drop of blood.
How we did it:
We mixed karo syrup (plasma), red cinnamon candies (red blood cells), dry lima beans (white blood cells), and lentils (platelets).
How we kept the toddler busy during the experiment:
This is from our R.E.A.L. Science Odyssey Life curriculum unit on The Human Body. The curriculum includes two worksheets that consist of diagraming and labeling a drop of blood but since Firefly seems to be highly allergic to worksheets and The Queen Bee is a bit young for these particular science worksheets, I decided to turn it into an art project instead.
Angela’s blog, Satori Smiles, has beautiful photographs of this experiment.
BrainPop Jr. (subscription required) Heart.
Usborne Internet-Linked First Encyclopedia of the Human Body. Available from various web sites or local Usborne consultants.