2Ultimath: A tool for elementary math (feedback please) (opens in new tab)(ultimath.com)1liu3hao13y ago0Save
3ShowHN: Learn the Model Method with the Whiteboard (opens in new tab)(ultimath.com)1liu3hao13y ago1Save
5Singapore Math Model Method: Ultimath Whiteboard (opens in new tab)(ultimath.com)4liu3hao13y ago0Save
7Duuble.me: pen your digital diary, we'll print it! (opens in new tab)(duuble.me)2liu3hao14y ago0Save
11Ask HN: Do you keep a diary?Just wondering if people maintain diaries today. If you do, how long have you maintained it and what were your reasons for keeping a diary? Thanks!show more5liu3hao14y ago11Save
13Show HN: A new way to like your videos and songs (opens in new tab)(partsie.com)18liu3hao14y ago6Save
14Show HN: Partsie, a new minimalist video rating service [need beta users!] (opens in new tab)(partsie.com)1liu3hao14y ago1Save
