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Whelk-Come to Mathematics

9-12

Explore sets of names and create bar graphs, pictographs, glyphs, and circle graphs.

Incenter-Incircle

9-12

This applet allows for the discovery of the incenter and incircle of a triangle.

Angle Bisector

9-12

This interactive demonstrates how to bisect an angle.

9-12
This interactive allows users to investigate three types of quadrilaterals; ones with: perpendicular bisectors, congruent perpendicular bisectors, and congruent bisectors.

Geogebra: Residuals and Linear Regression

9-12
Explore linear regression and residuals using this Geogebra interactive.

Using an Elevator to Evaluate Signed Number Expressions

6-8, 9-12

Using an Elevator to Evaluate Signed Number Expressions Using the idea of an elevator moving up and down, students will be given a small set of rules to add and subtract signed integers. The idea behind the method of adding and subtracting signed integers offered in these lesson is that the number of rules that s

Geogebra:Dynagraphs

6-8, 9-12

Explore relationships between inputs and outputs by manipulating interactive double number lines.

This interactive is optimized for your desktop and tablet.

Simson Line

9-12
This applet allows for the construction and exploration of the Simson Line.

Soccer Problem

9-12
Where should a soccer player be placed so that she has the best chance of making a goal?

Circumcircle

9-12

Construct and explore of a circumcircle.