It’s a new semester and the students are excited about animals. They have even asked to which phyla lice belong. The answer is Arthropoda. They are in the class Insecta. I did some additional research and learned there are 4 subclasses of lice and they are divided by the host they live on. Human lice have their own subclass. This is just an example of the fun things we are learning. We are currently learning about invertebrates and when we finish this chapter, we will do our first dissection — the earthworm, which is in the phylum Annelida (segmented worms).
Life Science
We are continuing to study the different systems of organisms. This chapter we have focused on the skeletal or structural system, circulatory/respiratory systems and the excretory system. We have found that they are quite different among the different type of...
