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### Using an Elevator to Evaluate Signed Number Expressions

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

### Can You KenKen?

### Geogebra:Dynagraphs

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

**This interactive is optimized for your desktop and tablet. **

### Simson Line

### Isosceles Triangle Area

### Soccer Problem

### Power of a Point

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?