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- Grade Range
- 5th - 8th
- Rating

Students identify some of the different species of crabs and tell how they adapt themselves to their environment. They discuss the evolution and stages of development of the crabs. They identify the Phylum Arthropoda and the Class Crustacea. Full Review »
- Grade Range
- 6th - 8th
- Rating

Students read articles discussing these species and brainstorm the challenges and benefits of harvesting them from the ocean. They conclude by writing plans pretending they're scientists who are going to harvest the species for medical purposes. Full Review »
- Grade Range
- 3rd - 5th
- Rating

Students examine two species of marine animal-Bugula neritina and the horseshoe crab-and their medical benefits (or potential benefits). They conclude by writing speeches discussing the relationship between ocean health and human medicine. Full Review »
- Grade Range
- 5th - 8th
- Rating

Students view a video showing the anatomy, life cycle, and unique blood properties of the horseshoe crab. They observe a live and preserved horseshoe crab. Full Review »
- Grade Range
- 6th - 8th
- Rating

Students examine estuaries in Delaware. They, in groups, gather samples of water to find organisms and identify them. Full Review »
- Grade Range
- 3rd - 8th
- Rating

Students edit an existing piece of writing focusing of improving word choice. They create lists of words that can be used in place of the main topic and rewrite the piece using the new vocabulary. Full Review »
- Grade Range
- 2nd - 8th
- Rating

Students create word referents to enhance word choice and enrich vocabulary. They explore the use of alternative words and phrases for key characters, setting, objects, or topics. They review the use of nouns and adjectives. Full Review »
- Grade Range
- 8th
- Rating

Students engage in a lesson about the horseshoe crab. They investigate the various adaptations of the organism. Students also conduct research to find how the crab is used for manufacturing different medicines. They synthesize the information and report the results. Full Review »
- Grade Range
- 6th - 8th
- Rating

Students develop a hypothesis for the survival of living fossils such as coelacanths and horseshoe crabs. They discuss theories for the extinction of dinosaurs then research one of the living fossils in detail to evaluate their own hypothesis. There is a Discovery Channel companion video for this lesson. Full Review »
- Grade Range
- Kindergarten - 6th
- Rating

Students discover many facts about horseshoe crabs. Students identify the main body parts of horseshoe crab. They explore the habits of the horseshoe crab and their importances to the ecosystem. Adaptations for younger students are included. Full Review »

