## Search Results

### Triangle Classification

9-12
Use this applet to show how the placement of the third vertex of a triangle affects the classification of that triangle.

### IGD: Perpendicular Bisector

9-12
Use this tool to demonstrate how to draw a perpendicular bisector.

### IGD: Simson Line - Orthocenter

9-12
Use this tool to explore how the Simson line of a triangle is related to the orthocenter.

### Isometric Drawing Tool

3-5, 6-8, 9-12
Use this interactive tool to create dynamic drawings on isometric dot paper.

### Line of Best Fit

6-8, 9-12
Use thisĀ activity to practice how to enter a set of data, plot the data on a coordinate grid, and determine the equation for a line of best fit.

### Name Letters

3-5, 6-8, 9-12
Use this activity to practice solving systems of equations. Use this tool to check students' answers.

### Times Table

Pre-K-2, 3-5
This tool allows you to practice multiplying single-digit numbers.

### Scale Factor

6-8, 9-12
Use this applet to investigate how changes in the scale factor influence the ratio of perimeters and the ratio of areas between two figures.

### Proof Without Words: Pythagorean Theorem

6-8
This applet proves the Pythagorean Theorem "without words" using geometry.

### Proof Without Words: Completing the Square

9-12
This applet gives a proof of completing the square "without words" using geometry.