Geoboard, by The Math Learning Center Avis

Learners stretch bands around the pegs to form line segments and polygons and make discoveries about perimeter, area, angles, congruence, fractions, and more.

This virtual version of the manipulative is an open-ended educational tool, ideal for elementary classrooms and other learning environments that use iPod Touches, iPhones, or iPads.

• Create line segments and polygons by stretching bands around the Geoboard’s pegs.

• Switch between the standard 25-peg square board, a rectangular board with 150 pegs, or a circular board with 13 pegs.

Geoboard is a tool for exploring a variety of mathematical topics introduced in the elementary and middle grades.

• Fill individual shapes with a transparent color, or use the Fill All button to toggle all the bands between filled and unfilled.

The circular board enables explorations with angles, fractions, and time measurement.

This app is brought to you by The Math Learning Center, a nonprofit organization dedicated to K-12 math education since 1976.

We help improve teaching and learning by creating solutions that match promising technologies with the needs of education.

• Display grid lines with or without numbering to more easily calculate area and identify shape locations.

• Duplicate shapes then move, rotate, or flip them to explore symmetry and congruency.

• Choose from 5 different band colors; 8 band colors on the iPad.

• Write equations and expressions with the text tool.

The Geoboard app was made possible by a generous donation from Dr.