This applet gives you the first few fibbonachi numbers (you can access more numbers by changing the limit of a) The numbers are calculated by a function b
Glenn's TMC13 My Favorite: Linear Functions in "Vertex Form"
Examining An Acute Angle
Fermat Point of a Triangle
GGG 2017 Jen Silverman
Mixture Problems with Candy & Chocolate
Post shadow, Sun behind
Exploring Parallel Lines