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In
this
lesson
about
the
origin
of
life,
students
will
learn
that
under
suitable
conditions,
life-like
structures
can
form
naturally
from
relatively
simple
materials.
Students
will
mix
a
carbohydrate
solution
with
a
protein
solution,
adjust
the
pH,
and
view
coacervates:
amoeba-like
objects,
which
change
shape,
flow,
merge,
divide,
form
vacuoles,
release
vacuole
contents,
and
show
other
life-like
properties.
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The
Living
Machine
Unit
is
a
series
of
activities
and
studies
designed
to
focus
the
student
on
various
aspects
of
wetlands
systems.
In
groups,
students
build
an
artificial
wetland
in
the
classroom.
This
is
a
long-range
study
designed
to
allow
students
to
discover
the
interrelations
between
flora
and
fauna
in
an
ecosystem.
They
will
use
writing,
math,
and
research
skills
to
investigate
the
artificial
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Choosing & Using this resource...
Educational standards associated with this resource:
National Science Education Standards (NSES): Read
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This resource is referenced by :
The Geological Society of America: Resources for K-12 Earth Science Educators -
http:/
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This
site
serves
as
a
gateway
to
three
sections
devoted
to
learning
about
tides
and
water
levels:
an
online
tutorial,
an
list
of
links
to
tidal
resources,
and
formal
lesson
plans.
The
tutorial
is
an
overview
of
the
complex
systems
that
govern
the
movement
of
tides
and
water
levels.
It
is
content
rich,
is
presented
in
easy-to-understand
language,
and
includes
many
illustrative
and
interactive
graphics
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The
objectives
of
this
lesson
plan
are
twofold:
to
have
students
understand
the
benefits
and
problems
associated
with
fire
and
to
understand
the
role
that
fire
plays
in
maintaining
healthy
ecosystems.
Emphasis
throughout
the
lesson
plan
is
placed
on
manager-ignited
prescribed
burns
and
natural
fires,
and
their
relevance
and
importance
to
various
types
of
fire-adapted
ecosystems
such
as
chaparral,
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Choosing & Using this resource...
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This
lesson
plan
is
part
of
the
DiscoverySchool.com
lesson
plan
library
for
grades
6-8.
Using
research
on
environmental
conditions
of
the
prairie
ecosystem
(strong
winds,
hot
and
dry
summers,
cold
winters,
and
plants
and
animals),
students
will
design
an
imaginary
animal,
detailing
how
its
physical
and
behavioral
characteristics
make
it
well
adapted
to
the
prairie.
They
will
illustrate
their
animals
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This
activity
has
students
inoculate
an
agar
plate
with
yeast
and
expose
it
to
sunlight
to
determine
the
effect
of
ultraviolet
(UV)
radiation
on
living
organisms.
Multiple
plates
are
exposed
to
sunlight
with
individual
groups
assigned
different
exposure
times.
The
plates
are
incubated,
and
then
observed
for
differences
in
yeast
growth.
Class
results
are
averaged
and
graphed
to
show
percent
survivors
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This
information
will
provide
students
with
an
opportunity
to
understand
the
ideas
proposed
by
Jean
Baptiste
de
Lamarck
in
1809.
Lamarck
was
an
eighteenth
century
naturalist
who
came
to
the
idea
that
organisms
change
over
time.
Among
other
things,
he
proposed
a
mechanism
for
cumulative
change
that
was
dependent
on
the
needs
of
organisms
and
resulted
from
the
use
or
disuse
of
particular
body
parts.
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Choosing & Using this resource...
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This
site
provides
background
information
and
a
general
description
of
Cyanobacteria,
which
are
both
aquatic
and
photosynthetic.
That
is,
they
live
in
the
water
and
can
manufacture
their
own
food.
The
site
explains
the
importance
of
these
bacteria
in
the
production
of
oil
deposits.
More
important,
however,
is
the
fact
that
the
oxygen
atmosphere
that
we
depend
on
was
generated
by
numerous
Cyanobacteria
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In
this
activity
students
work
in
groups
to
design
experiments
to
test
the
effects
of
cold
on
rate
of
diffusion,
enzyme
activity,
nerve
activity,
dissolved
oxygen,
blood
flow
characteristics
and
lipid
characteristics.
After
teacher
approval,
the
group
performs
their
experiment
and
reports
their
results
to
the
rest
of
the
class
for
class
discussion.
Students
will:
design
a
controlled
experiment;
record
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Choosing & Using this resource...
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In
this
activity,
students
will
dissect
a
fish
purchased
from
a
fish
market
to
study
its
external
and
internal
anatomy.
They
will
observe
its
gills,
kidney,
and
blood
through
a
microscope
and
take
a
variety
of
measurements
of
many
of
the
internal
organs.
They
will
practice
their
observation
skills
by
making
accurate
illustrations.
These
data
and
drawings
will
then
be
compared
with
some
Antarctic
fishes
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