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Support and Movement
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Structure, Support, and Movement
Your Skeleton
Grades 6-9

By identifying life size model bones, performing a bone dissection, and examining x-rays of
broken bones, students will explore how their skeleton provides structure and support,
enables movement, serves as a mineral reserve, and produces blood cells. Students apply
the scientific method and learn about how the skeleton provides protection by participating
in an egg drop experiment. Students compare the movement of different kinds of joints.


Movement, Control, and Coordination
Muscle and Nerve Basics
Grades 6-9

Students explore the basics of muscle and nerve action through a variety of model building,
role play, and dissection activities. Students examine the basic structure of muscle action
on bones through the dissection of a Cornish hen. Students analyze scientist's microscopic
observations of muscles to develop a sliding filament model. Through role play, they develop
an understanding of how sliding filaments can result in muscle contraction. The basic
organization of the nervous system is also explored. Students participate in a role play that
demonstrates how a nerve impulse is transmitted down the length of the axon and across the
synapse. Students also have the opportunity to test the behavior of their own nervous
systems.


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