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New concepts are introduced through brief lectures of
digitized sound accompanied by graphical displays. To view a
demo of a lecture for a specific grade level, click on the image or use the link for that grade level.
The lectures weave among the different topic
areas to which the student is introduced.
As students master
concepts, they are moved more rapidly through the material,
while students needing more explanation or practice in a
strand area are given additional drill.
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