This packet originated out of necessity. I created many items to supplement our existing science curriculum. (My grade level's required to teach four separate kits throughout the year, and one of them is SCIS 3+ Populations.) The unit is really engaging, but I was lacking certain things that I felt would spruce up the unit and help support the students. This unit was created to fill that need. While this is not a full curriculum, I really hope that it helps beef up your own existing units. Please check out the preview file to see if this unit will fit your needs! Happy Teaching!