If a picture is worth a thousand words, a Thinglink image may be worth 1000 pictures. Thinglink is a great FREE tool that enables one to create dynamic interactive images that have embedded hyperlinks to other images, wikipedia articles, videos, websites, audio recordings, or almost anything else. The image can then be embedded in your website or Haiku class, projected etc. Easy to use.
Via Free Technology for Teachers and Richard Byrne:
"Dictionary Bubble is a free Chrome extension that provides definitions and synonyms for any word that you double-click in an online article. The extension will also provide an audio pronunciation of the words on which you double-click."
Need sound effects for your mutlimedia project? Soundgator.com provides a library of free sound effects that may be downloaded or embedded in a website. You may be able to help students find sounds they need to complete their projects.