Keep my session open?
Ending In 
The session is expired
Your session has expired. For your security, we have logged you out.
Would you like to log in again?

Unit: Classification

Aligned to Science TEKS with clear Learning Outcomes, this unit covers instructional content including Linnaean System of Classification, Evolutionary Classification, and Domains and Kingdoms.


  • 4A  Compare and contrast prokaryotic and eukaryotic cells
  • 8A  Define taxonomy and recognize the importance of a standardized taxonomic system to the scientific community
  • 8B  Categorize organisms using a hierarchical classification system based on similarities and differences shared among groups
  • 8C  Compare characteristics of taxonomic groups, including archaea, bacteria, protists, fungi, plants, and animals