The cloud-app Fluency21 Unit Planner is a place where  educators can create, share, and collaborate to develop problem based learning units that are engaging, challenging and relevant within the context of the required Australian curriculum.

During the holidays I met with Carly and Jess to give this unit planner a go. See their History units titled Significant buildings in my school and Families, past and present at   http://app.fluency21.com/unit-plans/public_

This site shows a visual grid of events impacting on the world by the hour. You are able to delve deeper by clicking on the image or associated key words. 
http://www.tenbyten.org/10x10.html