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a spectroscope you can see that a single color of light is really
comprised of a combination of colors, called a spectrum.
activity can be a little difficult, because you are dealing with living
cells. But the results are well worth the effort.
Light Island is an excellent teaching tool. It can help teach about
shadows, reflection, refraction, and color.
Introduction to Cell Biology
Do you want and/or need to learn about molecules
and how they make up cells? Do you want and/or need to learn
about mitosis and meiosis? This course will focus on these
topics. Learning about molecules, cells, what makes up those
cells, and how those cells make up animals and humans is
information needed in many careers as well as applicable to
Do you have an interest in the environment? Do
you want to learn how organisms interact with their
environments? This course is designed for students interested in
learning about the basic principles of ecology. It will cover
topics of ecology in four different components: organisms,
populations, communities, and ecosystems.
Introduction to Physical Geography
This is a non-technical introduction to Physical
Geography. Physical Geography is the study of the physical side
of Earth. This includes the four spheres of Earth, and in this
class you will understand how Earth spheres interrelate. We will
examine the atmosphere, biosphere, lithosphere, hydrosphere and
other valuable information. This class will explore the dynamics
of Earth's physical side, and provide information about the
Earth, probably not known to most.
vision of the ETE online series is to promote science-literate and
reflective students who are knowledgeable of the earth's processes and
their responsibilities for stewardship.
purpose of these free online lessons is to give you a start at improving
your scientific knowledge.
1898, Friedrich Loeffler and Paul Frosch found evidence that the cause
of foot-and-mouth disease in livestock was an infectious particle
smaller than any bacteria.
to K-12 education, exploration, and life-long learning.
Learn how Biology, Geology, Hydrology, and Geography can help us
understand our changing world.
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