OK.SPI. SCIENCE PROCESSES AND INQUIRY
SPI.2. Classify - Classifying establishes order. Objects, organisms, and events are classified based on similarities, differences, and interrelationships. The student will accomplish these objectives to meet this process standard.
SPI.2.1. Classify a set of objects, organisms, and/or events using no more than three observable properties (e.g., dichotomous keys).