## Mathematical Learning 'Games' and 'Toys' built using the GeX class library

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• Geometry
• 3quilaterals An interesting fact about equilateral triangles
• QuadriCross Lines joining midpoints of squares on opposite sides of an arbitrary quadrilateral
• CommonTan Explore the ruler and compass construction of a line tangent to both of two given circles
• MaxAngle Where to stand for the best view of a picture?
• Snowflake Demonstrating a simple model of snowflake growth
• Functions and Graphs (without Calculus)
• Liner Shoot a straight line through a pair of target points
• AsymptoGuess Find the asymptotes to the graph of a rational function
• BlueBlobs Like a version of the classic 'Green Globs' game
• Jumbo Find the right viewing window to match the given views of a graph
• Shift&Scale See how shifted and scaled graphs depend on a controlling parameter
• Compoz Study graphs of composite functions
• TrigFuncs Play with the 'Unit Circle' definition of trig functions and their graphs
• PiShow Unroll a circle to find Pi on the Number Line
• ExpoZoom Zoom in on y=b^x and vary b to get slope 1 at x=0
• Calculus
• SecTan Drag "beads" along a graph and watch the secant line as they come together
• DerivGraph Use the slope of a moving tangent line to generate the graph of the derivative
• AreaSoFar Observe (and graph) how a definite integral varies as the endpoints are changed
• Other
• OPTime Find optimal purchase (and selling) times for an appreciating asset
• SRSim A tool for illustrating some efects of Special Relativity
• Snowflake Demonstrating a simple model of snowflake growth
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