/ 0 votes – 4 downloadsUpdated 2011-03-18 16:30 UTC – Stable QualityFree & Open Source license Calculus, mathematics training for kids. Donations are welcome: DONATE Author David Galindo Links Homepage Mar 18, 2011admin VN:F [1.9.22_1171]Rating: 0 (from 0 votes) Bookmark It Hide Sites