Harness gravity with your crayon and set about creating blocks, ramps, levers, pulleys and whatever else you fancy to get the little red thing to the little yellow thing. …繼續閱讀數字物理學
When you study music on high school, college, music conservatory, you usually have to do ear training. GNU Solfege tries to help out with this. …繼續閱讀索尔费格
