Category Archive: algebra

Apr 27

Conic Sections on Desmos

Go to this Desmos graph It shows two each of the four conic sections Circles, Ellipses, Hyperbolas, Parabolas Note: A hyperbola has two branches. Only one is shown in the image.  A cone actually has two frustums.  The image only shows one frustum.

Mar 23

Spotting Numbers and Visual Patterns

Here a two great websites that provide lots of great pattern problems. [this website hasn’t been functional lately – too bad! – Spotting Numbers – interactive, does require Java.] Visual Patterns – less interactive, (no Java needed). These patterns can be used with elementary students (if you just ask number questions) through advanced algebra (if …

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