## Search Results

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

### Handshakes

3-5, 6-8

When the nine justices of the Supreme Court meet, they greet one another with a handshake to show harmony of purpose, even though their views may differ. How many handshakes occur? In general, how many handshakes occur when there are n people?

### Bunny Times

Pre-K-2, 3-5

Become confident in facts up to 12 x 12 using visual models that stress the conceptual aspects of multiplication.

### Geogebra: Residuals and Linear Regression

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

### 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.

### Isosceles Triangle Area

6-8
Explore when an isosceles triangle obtains its maximum area.

### 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.

### Power of a Point

9-12

Use this tool to investigate what happens when point P is moved to various points within, on, and outside the circle. What, if any, relationships can you identify among the segments and radius?