A superb Apple and Android app from IFTTT which lets you setup one click notes which can be used for many online services. You can send a note to your email, add something to Evernote, or even add something to your Google Calendar by extracting the details from the text. Use it in your ongoing assessment by quickly noting things you notice in class.

The Smithsonian has created online 3D models of some of their collection. Explore these treasures like never before.

A superb assessment resource which allows you to gain real-time feed back through tests, quizzes and even allowing students to annotate a document that you upload. Set up your quiz/test using true/false statements, longer text answers or students can draw the answer. You can setup a marking key meaning that the site will mark the answers for you and give instant data on who is correct. Your student can either have there own free account or they can access the material using a link. The site works across a wide range of devices.