.GCW File Extension
File TypeMicrosoft Mathematics Worksheet
This file is saved in a binary format, which requires a specific program to read its contents.
What is a GCW file?
Worksheet that contains mathematical expressions created with Microsoft Mathematics, a educational calculator program; may include equations, graphs, and handwritten calculus expressions created using the Ink tool.
NOTE: Microsoft Mathematics 4.0 was released in January, 2011. Earlier versions of the software were named Microsoft Math.