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This tutorial provides instruction in algebra and trigonometry. Although intended as a refresher, it should be understandable to students who are new to the material as well as provide new insights to those who are already familiar with it.



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This tutorial explains the Keplerian elements, the seven numbers which are required to define the orbit of a satellite. Each section addresses one of the elements, giving a literal definition as well as a practical explanation in simple language with some examples of typical numeric values.



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This
site
describes
bouyancy
(the
difference
between
the
upward
and
downward
forces
acting
on
the
bottom
and
the
top
of
an
object)
and
the
Archimedes
Principle,
which
states
that
the
buoyant
force
on
a
submerged
object
is
equal
to
the
weight
of
the
fluid
that
is
displaced
by
it.
It
consists
of
text
descriptions
of
these
principles,
using
the
examples
of
metal
cubes
suspended
in
water
and
hot
air
baloons
...



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This document discusses the history of mass extinctions throughout geologic time, their role in the evolutionary process, and a mathematical model that demonstrates how the evolutionary process might interact with environmental stresses to produce a distribution of extinctions similar to that seen in the fossil record.



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Educators and students can find a variety of materials designed for support in the areas of science, mathematics, and technology. Resources are available on NASA education programs including specific areas for kids, students and educators at the elementary, secondary, higher and informal education arenas.



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