## Search Results

### 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

### Can You KenKen?

3-5, 6-8
The objective of this lesson is to use combinations to solve KenKen puzzles. An early solution strategy is for students to guess and check and use logic-based elimination. This lesson builds on those strategies by having students systematically list all possible combinations within each cage, the darkly outlined sections of the puzzle.

### 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?

### Pythagorean Review

6-8

Review and explore the Pythagorean Theorem.

### Euler's Line

9-12
Discover and explore Euler's Line.