Bundle: Horseshoe Crab & 3Rs of Animal Research - Enrichment - Ecology - Scientific Inquiry
SAVE MONEY with this bundle of 2 activities: Horseshoe Crabs Are Living Fossils - Enrichment - Ecology and The 3Rs in Research Practices - Enrichment - Scientific Inquiry.
Horseshoe Crabs are Living Fossils
The horseshoe crabs' fossil record extends back 445 million years. They are called “living fossils” because their body structure has changed very little in that time. Help students understand more about this facinating creature with this learning activity.
The exercise covers information about horseshoe crab anatomy and body systems, with specific focus on the animal's efficient immune system. The fifty-plus-year practice of horseshoe crab blood use in medical testing is discussed. The resultant environmental concerns related to overharvesting and the biological impacts on other marine animals provides excellent connections to topics in Ecology.
This activity includes:
- Two-page article about Horseshoe Crab anatomy, body systems, use in medicine, conservation
- Color Coding with four diagramatic views
- Six open-response questions
- Answer Key
The 3Rs in Research Practices
Researchers use “The Three Rs” to refer to animal welfare principles Reduction, Refinement, and Replacement. First described in 1959, today they represent the guiding principles for the humane treatment of animals in scientific and wildlife conservation research, when their use can not be avoided.
Teach students about this important component of the scientific process with this instructional article and vocabulary exercise. This activity includes:
- A four-page article with 20 identified vocabulary terms
- A crossword puzzle with matching clues
- An Answer Key