This Science NetLinks lesson helps students understand how environmental "surprises" and scientific uncertainty related to endocrine disruptors influence perceptions of benefits and costs, and thus the decisions that people make. This lesson uses an interactive E-Sheet.
Genetically modified foods have caused a lot of controversy among environmentalists. Some worry that these so-called "Frankenfoods" might disrupt the ecosystems they grow in, or even threaten human health. But others praise their potential to offset other environmental problems. For example, in this Science Update, you'll hear how genetically engineered tomatoes may be able to resist parasitic worms without the use of toxic pesticides.
In this Science NetLinks lesson, students are introduced to the basics of how a baby grows inside its mother until its birth. They then consider and discuss the birthing process. Then students are led into the third part of the lesson, which focuses on the early years of infancy. They are prompted to think about the kinds of basic needs infants have and the critical role adults play in ensuring a baby's healthy physical, emotional, and cognitive development.
The following statement, written by Samuel T. Coleridge, ties in well with the study of human development to which students are introduced during these grades: "The history of man for the nine months preceding his birth would probably be far more interesting, and contain events of greater moment, than all the three score and ten years that follow it." This lesson will enhance students' studies by providing them with the chance to explore human development using Internet resources that contain text, drawings, photos, and video about human development.