Tracing the pathway of a cheeseburger through the entire digestive Essay

Tracing the pathway of a cheeseburger through the entire digestive system - Essay Example The term "animal testing" means the procedures done on the bodies of the animals. It is majorly for the purposes of research into pure biology and ailments, evaluating the efficiency of new medicinal yields. Moreover, it is also meant for testing the health of human beings besides assessing the safety of the environment of consumer and industry products. Animal testing began a long time ago. The time dates back to the fourth and third centuries. Early Greek writers documented some of these early animals testing. Aristotle and Erasistratus were probably the first few individuals in the history of animal testing. The first person who dissected mammals like goats and pigs are Galen. He was among the very few physicians who lived in the by the then times of history. However, later on animal testing was introduced in Spain as an experimental method of testing the surgical operations and steps before using them in the doing surgery to us human beings. A surgical doctor, Ibn Zuhr (Avenzoar), introduced that notion. Later on in 1242, circulation of blood in mammals was provided by a scientist known as Ibn al-Nafis. The year 1996 also marked a very significant year in the history of animal testing. Successfully, the Dolly sheep was born. Dolly was cloned from an adult cell. It was the first in the history of animal testing. Ian Wilmut, Keith Campbell besides other individuals at Roslin Institute situated in Scotland, plus a biotechnology company that funded the whole process of cloning dolly. The main reason for cloning dolly was to confirm if the somatic cells would form a whole organism. Currently, animal testing is still in use in the in researchers that targets to get a solution to medical challenges from Alzheimer’s disease. Other challenges include spinal cord malfunctions, multiple sclerosis and many other states where there are no valuable in vitro model

Supervision for Instructional Improvement Essay - 1

Supervision for Instructional Improvement - Essay Example For sometime now, Bruce Joyce and his colleagues have been saying that typical staff development â€Å"probably will not generate the amount of change necessary to affect student achievement†. Instead they advocate along with Sparks, Fullan and others---the creation of the kind of â€Å"Communities of teachers† who engage in focused, recurring cycles of instruction, assessment, and adjustment of instruction†.(Joyce and Showers 2002) â€Å"Research emphasizes that coaching is a prerequisite for the implementation of new skills strategy†( Showers, Joyce and Bennett 1987). Leaders must be aware that the provision of ongoing support is crucial to the successful attainment of an innovation. Therefore, one of the first staff development initiatives to be offered to teachers in the classroom, is peer coaching. For staff development expert Thomas Guskey, the promise of professional development has gone â€Å"largely unfulfilled†. The solution in staff develo pment is build around â€Å"collaborative exchange†, in which â€Å"teachers work together, reflect on their practice, exchange ideas, and share strategies†(Guskey 2003) Richard Stiggins writes that 2 â€Å"assessment literacy†, is so integral to the ongoing improvement of instruction in â€Å"learning teams† â€Å"Work shops†, he says â€Å"will not work†, they â€Å"do not† permit the application of and experimentation with new assessment ideas in real classrooms, and sharing that experience with other colleagues in a team effort†(Stiggins 1999).