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IGDPerpendicularBisector
Geometry

IGD: Perpendicular Bisector

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

IGD: Simson Line - Orthocenter

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

Isometric Drawing Tool

3-5, 6-8, 9-12
Use this interactive tool to create dynamic drawings on isometric dot paper.
Ken Ken 150
Algebra

KenKen

Pre-K-2, 3-5, 6-8, 9-12
Developing Calculation Skills, Logical Thinking and Persistence with a Puzzle Game
LineOfBestFit
Data Analysis and Probability

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.
LinearRegressionI
Data Analysis and Probability

Linear Regression I

6-8, 9-12
Investigating a Regression Line and Determining the Effects of Adding Points to a Scatterplot
NameLetters
Algebra

Name Letters

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

Tower of Hanoi

6-8, 9-12
Use this applet to solve the Towers of Hanoi puzzle: move all the discs from the first peg to the last.
TimesTable
Number and Operations

Times Table

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

The Quotient Cafe

3-5, 6-8
Use this applet to illustrate division and remainders by the division of food to aliens, dinosaurs, penguins and more.