Twurdy is a Google powered search tool that displays results at appropriate readability levels. Just enter a search term to get color-coded results which determine how easy the page will be to understand. This is certainly a useful tool to help all learners succeed and also a good tool to add to any teacher's toolkit of resources.
If you think the name of this search engine will be difficult to remember, perhaps knowing that it was derived from a play on words, "Too Wordy?", will help you remember it.