Great mathematics blog from a young Filipino mathematician, Guillermo Bautista Jr. He does a very nice job of making the mathematics accessible through digital media. He discusses a very wide variety of topics.
Interesting little article identifying how to use web 2.0 tools to achieve school improvement plan goals, but I will say it's the instructional uses and not the tools that makes these goals achievable. Without the understanding (and more importantly) buy-in from teachers to integrate the tools into the classroom SIP goals won't be achievable.