The Geometer’s Sketchpad was originally developed by KCP Technologies and distributed by McGraw Hill. Currently, the most reliable way to download the software is through the official or authorized educational repositories.
Drag the GSP icon into your Mac's Applications folder . Do not run it from the DMG window, as this can cause save errors. gsp download for mac
This is the most important part for Mac users. GSP was built using older architecture, which means your experience will vary based on your macOS version: The Geometer’s Sketchpad was originally developed by KCP