- Planarians
- 40 min
- Lower secondary / early high school
- English
Planarian Detectives: identify the mystery substance
Short lower-secondary activity: students open Planarians in detective mode, count line crossings for control E and two mysteries, identify the high- and low-movement mysteries, and write a cautious evidence-based conclusion.
- Define a fair rule for counting line crossings during a planarian observation.
- Use substance E as the water control when comparing two mystery substances.
Includes student questions and response prompts.