Predict the spread of a virus over a population.
3-5, 6-8
Find your personal number using your birthday! It is the month + date + year & month × date × year.
9-12
Use this tool to explore how the Simson line of a triangle is related to the orthocenter.
9-12
Use this tool to demonstrate how to draw a perpendicular bisector.
9-12
This interactive demonstrates how to bisect an angle.
9-12
This interactive demonstrates why (
a +
b)
2 = a
2 +2ab + b
2.
6-8, 9-12
Use tiles to represent variables and constants, learn how to represent
and solve algebra problem. Solve equations, substitute in variable
expressions, and expand and factor.
9-12
Use this applet to show how to drop a perpendicular from a point onto a line.
Pre-K-2, 3-5
Use this tool to design a pattern using geometric shapes.
6-8
Investigate how changes in the base and height of a trapezoid affect its area.
6-8
This applet shows the relationship between the area of a parallelogram and the lengths of its sides.
3-5, 6-8
This applet is the Product Game: a fun, interactive game that exercises your skill with factors and multiples.
9-12
Use this applet to show how the placement of the third vertex of a triangle affects the classification of that triangle.
Investigating Functions with a Ferris Wheel: Distance vs. Width
A Web Sketchpad activity helps students make sense of relationships between quantities, in this case the way that the distance a car travels around a Ferris wheel covaries with its "width" or horizontal distance from the center of the Ferris wheel
Investigating Functions with a Ferris Wheel: Distance vs. Height
A Web Sketchpad activity helps students make sense of relationships between quantities, in this case the way that the distance a car travels around a Ferris wheel covaries with its height.
<iframe src="/tools/ferriswheel/FerrisWheel_
3-5, 6-8, 9-12
Use this activity to practice solving systems of equations. Use this tool to check students' answers.
