Metals are what make smartphones so "smart."
An average smartphone may contain up to 62 different
types of metals. One rather obscure group
of metals-the rare-earth metals-plays a vital
role. The rare-earth metals include scandium and
yttrium, as well as elements 57-71. Elements 57-71
are known as the lanthanides, because they begin
with the element lanthanum.
Taxonomy, the practice of classifying biodiversity, has a venerable
history. Although early natural historians did not recognize that the
similarities and differences among organisms were consequences of
evolutionary mechanisms, they still sought a means to organize
biological diversity.
The article "Data back ban of artificial trans fats" (10.8 readability score)
summarizes new research showing that banning artificial trans fats in foods
could reduce the risk of heart attacks and strokes. Students can focus on
details reported in the article, follow connections to earlier articles about
trans fats research, engage in a classroom discussion of related scientific and
government policy questions and make connections between the science of
food and their health. Students can also conduct their own experiments to
analyze foods for fats and then research the types of fats within different
foods to make recommendations about dietary consumption.
The article "The difference makers" (10.9 readability score) gives an overview of transposons, or
"jumping genes," and how these bits of genetic material have affected genetic variety and evolution in
humans and other organisms. Students can focus on details reported in the article, follow connections
to earlier articles about transposons and human evolution, explore crosscurricular
connections to other major science topics, and construct a
phylogenetic tree of primate evolution based on the locations of retroviral
sequence insertions in chromosome 21
Module 1: Understanding Bacteria
Module 2: Farm
Module 3: Processing and Transportation
Module 4: Retail and Home
Module 5: Outbreak and Future Technology
Labs, videos, and activities in manual