Use GraphFree to make just about any graph you can dream up.
When I need a graph, it's the go-to site.
Given the equations for this one (y = x - 6 & y = -x^2 + 4x + 12), kids were to find coordinates of intersections, intercepts, & vertex.
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Geometry students don't do enough constructions.
If it's because teachers aren't comfortable with the basics, they should use Math Open Reference for simple step-by-step constructions.
Grab your paper, straight edge, & compass and give Hexagon Inscribed in Circle a try.
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Logic? Pretty scarce in this day and age, right?
brainzilla has a page full of logic grid puzzles, plus plenty of other games and puzzles.
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