A couple of students had problems yesterday with pronouncing the -ED ending (for either regular past simple or participle adjectives), so I've created a video that explains the rule.
Here's how you do it: the first time you watch the video, just watch. Don't do anything. The second time you watch the video, try pronouncing the words after I say them. If you don't say it correctly, no worries. You can watch the video as many times as you want to practice.
This video goes a little more slowly (to help lower-level students) - but don't be fooled. There are 45 videos on there: are you sure that you could pronounce all of these ED words correctly?