Downloading Skoolbo Common Core 1.8.2 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available.
Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. The actual developer of this free Mac application is Skoolbo. The program lies within Education Tools, more precisely Teaching Tools.
From the developer:
Skoolbo Common Core is a literacy, numeracy, and languages-based program. It provides multi-player games that incorporate beautifully-designed 3D worlds, individualized avatars, and a highly motivating reward system. The games' algorithm regularly assesses each child's achievement and adjusts the numeracy and literacy questions accordingly, providing a balance of revision, practice, and new learning.
You may want to check out more software for Mac, such as Common Core Library, Skoolbo Aussie or MPV's iPhoto '11 101 - Core iPhoto '11, which might be related to Skoolbo Common Core.