SeeSaw is a great digital portfolio tool for students and teachers. It works on all devices including iPads and Android tablets. The service has always allowed students to draw and annotate items in their digital portfolios. The latest update to the SeeSaw iPad app lets students talk while drawing on pictures in their portfolios.
Applications for Education
The option to draw and talk on top of a picture could be useful in helping students explain the artifacts in their digital portfolios. Students can also draw and talk on a blank canvas in the SeeSaw iPad app. Doing that would be a good way to have students explain and demonstrate how to complete a mathematics problem.