## 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 this 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.