The objectives of this study were to construct and
develop a two-tiered multiple-choice test for the measurement
of student misconceptions in optics at the level of
secondary education in Thailand, as well as to investigate
the effects of gender, grade level, and type of school upon
levels of student misconceptions....
By 1900 domestication was a promising, if somewhat vexed, subject in biology. Volumes had been written about domestication, but little serious scientific inquiry was directed toward the phenomenon. Expertise lay with practical men, primarily breeders and fanciers. The bulk of scientific commentary on domestication came from anthropologists who derived theories...
The sperm whale (Physeter macrocephalus) shows some of the most derived characteristics of any mammal: a large body size, large brain, complex social organization and a capacity for deep foraging dives that few other marine mammals can match. Despite a history of exploitation that removed hundreds of thousands of individuals,...