Sketchcast- sketch out ideas with narration

Sketchcast lets you make videos by drawing using a simple Paint-style program and recording your voice over the top. So for instance, you could use it to create a video explaining how to use blank number-lines to complete subtraction. You simply press record and start drawing and talking at the same time. This is quite tricky to get used to but is a simple and quick way to create videos.

To get started, you just complete the registration form and then click 'create'. The interface is very clean and easy to use.

When you are finished drawing and talking, you click on publish. Once published, Sketchcast creates some code which can be used to embed your video into a blog or website.

Collaborative art: Flockdraw

Flockdraw lets you collaborate in realtime on a simple online drawing. It is free to use and you do not need to sign up to anything. It is like a basic version of Primary pad for drawing.

When you create a new picture, Flockdraw gives your masterpiece a random web address so that you can share the page with other collaborators. You could  create a custom shortcut in bit.ly to make this address more memorable. Once more than one person are working on the page any changes any of the collaborators make appear straight away.

The tools available are similar to those available in the Microsoft Paint program. At the moment, there is no clear way of saving your work although you could just make a screen-shot.