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Students study four related human-body
transport systems that
provide all the cells water, food,
gas exchange, and waste disposal.
The structures and functions of the
circulatory, respiratory, digestive,
and excretory systems are explored
through a variety of multimedia
activities. Students observe and
analyze an investigation on gastric
juice in the stomach. |
LS2a Many multicellular organisms have
specialized structures to support the
transport of materials.
LS2b Blood circulates through the heart
chambers, lungs, and body, and carbon
dioxide and oxygen are exchanged in the
lungs and tissues.
LS2c Teeth and the mouth, esophagus,
stomach, small intestine, large intestine,
and colon are part of the digestive
system.
LS2d The kidney removes cellular waste from
blood and converts it into urine, which is
stored in the bladder.
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I&E6d Identify the variables in an investigation.
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Students investigate the transport
system in vascular plants and learn
about the specialized structures,
xylem and phloem tubes. Students
design and conduct a scientific
investigation and discover that
leaves play an important role in
the transport of water to cells
in vascular plants. They use
multimedia resources to gather
information about plants. They
collect and classify plant leaves,
based on appropriate criteria. |
LS2a Many multicellular organisms have
specialized structures to support the
transport of materials.
LS2e Sugar, water, and minerals are
transported in a vascular plant.
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I&E6a Classify objects in accordance with
appropriate criteria.
I&E6b Develop a testable question.
I&E6c Plan and conduct a simple investigation
and write instructions.
I&E6f Select tools and make quantitative
observations.
I&E6g Record data graphically and make
inferences based on those data.
I&E6h Draw conclusions and indicate whether
further information is needed.
I&E6i Write a report of an investigation.
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Students analyze an experiment
to determine the conditions
under which plants produce food
(photosynthesis). They design an
investigation to determine what
conditions are needed to activate an
organism (yeast) and are introduced
to the process by which plant and
animal cells obtain energy from
food (cellular respiration). They
design and conduct an experiment
to determine the sugar content of
common foods. |
LS2f Plants use carbon dioxide and energy
from sunlight to build molecules of sugar
and release oxygen.
LS2g Plant and animal cells break down sugar
to obtain energy, a process resulting in
carbon dioxide and water.
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I&E6b Develop a testable question.
I&E6c Plan and conduct a simple investigation
and write instructions.
I&E6f Select tools and make quantitative
observations.
I&E6h Draw conclusions and indicate whether
further information is needed.
I&E6i Write a report of an investigation.
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