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Teaching Flatworms

Flatworms

Flatworms belong to the phylum Platyhelminthes. There are more than 25,000 species in the flatworm phylum.

CK-12 (High School)

ESSENTIAL QUESTION:

What characteristics evolved in flatworms?
STANDARDS:
RST.2 - Main Ideas

DEPTH OF KNOWLEDGE (DOK) LEVELS:

1,3
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