Amerikaanse filmpjes over crosscutting concepts
Patterns
http://www.youtube.com/Crosscutting Concept 1: Patterns
Paul
Andersen explains
patterns and describes why pattern recognition is an important
skill in science and engineering. He begins by discussing patterns in
nature, including snowflakes, flower petals, seasons and nucleotides in
DNA. He then illustrates the importance of classification in describing
and eventually understanding patterns. He gives a progression instruction
in the science classroom from grade K to 12. A secret pattern is hidden
within the video.
Cause and effect
http://www.youtube.com/Crosscutting concept 2
In
this video Paul Andersen explains
cause and effect, its
importance in science and engineering. He starts by addressing the chain
of interactions that must be present to show cause and effect. He
addresses the assumptions of universality and scale in determining cause
and effect. He finishes the video with a progression of instruction from
K-12.
Scale
http://www.youtube.com/Crosscutting Concept 3
In
this video Paul Andersen explains the importance of
scale in science and
engineering. The Universe varies in size along three scales: size,
timespan, and energy. Many phenomenon are too small and fast, or too large
and slow to observe. We use the tools of proportion and units of measure
to comprehend different scales. The video ends with a progression of
instruction from K-12.
Systems
http://www.youtube.com/Crosscutting concept 4
In
this video Paul Andersen explains how
systems can be used to
understand phenomena in
science and create better designs in engineering. He starts by defining
the characteristics of a system and describes how system models can be
used to better understand the world. For example a system model of the
water cycle can show the cycling of matter on the surface of the Earth. He
ends with a progression of instruction for a K-12 science classroom
matter and energy flow and cycle
http://www.youtube.com/Concept 5
In
this video Paul Andersen explains how
matter and energy flow and cycle
through systems. He starts by explaining how energy and matter input and
output will always be conserved. He addresses the many misconceptions that
surround energy and matter including the belief that food contains energy.
He explains how nuclear reactions conserve both matter and energy. The
video ends with a teaching progression for grades K-12.
Structure and function
http://www.youtube.com/Structure and Function
Paul Andersen explains how the
structure of objects are
related to their
function and vice versa. He begins with a quick quiz on bicycle
construction and ends with a progression of teaching for students grades
K-12. He also explains how the scale of an object will determine the
function studied.
Stability and change
http://www.youtube.com/Stability and Change
Paul Andersen explains how stability and change are regulated in systems through controls and feedback. Controls are used to regulate matter and energy flowing into a system. Feedback mechanisms within the system are used to regulate stability. Negative feedback loops keep the values around a set point and positive feedback loops move them away. Disequilibrium can result in death of living systems and destruction of physical systems. A progression of instruction for K-12 students is also included.