The bloggers at have been busy recently, and we've seen the addition of some great new posts.  Here are some links if you're interested.

Using Sliders to Vary Parameters in an Initial Value Problem - Dr. Robert Lopez

The Mighty Transistor - Fred Kern

Why Slopes of Perpendicular Lines Are Negative Reciprocals - Dr. Robert Lopez

It's Not Easy Being Green -- Tom Lee

Hope you enjoy them!


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