Biology 11 – Platyhelminthes Lesson 4
Purpose: This lesson will allow students to observe live organisms to connect concepts about Platyhelminthes to the real world.
PLOs:
G1. Analyse how the increasing complexity of animal phyla represents an evolutionary continuum
G3. Analyse the increasing complexity of the Phylum Platyhelminthes, the Phylum Nematoda, and the Phylum Annelida
SWBAT:
- describe classes of Platyhelminthes
- describe the ecological role of Platyhelminthes
- describe how Platyhelminthes carry out life functions
Materials: Live planaria, eyedroppers, microscopes, slides, prods, flashlights, black felts, piece of meat, preserved tapeworm and fluke specimen, worksheet.
Introduction:
| Student Activity | Teacher Activity | Time |
| Write down which class the description on projector is about. | Put up descriptions on projector. Go over answers. Free-living, no digestive system, scolex, ventral sucker, eyespot | 5 min |
Direct Instruction:
| Student Activity | Teacher Activity | Time |
| Read the procedure while the teacher explains it. | Describe the procedure of experiment. Tell students to be careful with the planaria. | 10 min |
Activity:
| Student Activity | Teacher Activity | Time |
| Examine live Platyhelminthes and complete worksheet. | Tell students to look closely at how they move, how they respond to stimuli. | 45 min |
Conclusion:
| Student Activity | Teacher Activity | Time |
| Pair/Share observations made during the lab. | Ask students to share behaviours they observed. How can you explain the behaviours based on structures have learned about. | 5 min |