"Diagramly is a free online diagram drawing application. You can use it to create UML, entity relationship, org charts, BPMN and BPM, database schema and networks. Also possible are telecommunication network, workflow, flowcharts, maps overlays and GIS, electronic circuit and social network diagrams. It's like a mini version of Visio in your browser."
The survey involved more than 600 "randomly selected mathematicians worldwide" and revealed that many mathematicians publish on arxiv.org, some on their personal websites, some publish in open access journals but disapprove of publishing fees, tenure and promotion influence publication, high awareness of publishing rights, little use of online collaboration tools
A Dustbin game is great for helping students to organise ideas into categories.
Students or teachers can create up to four categories of factors. The game created by ClassTools.net then involves students dragging and dropping each factor into its correct category as quickly as possible in a "race against the clock"!