If you consider yourself as a Riddle Master try these out for size. This is season 2 of the "TED-ED Riddle serious...
TED Ed is one of our favourite video resources we have been using over the last few years. It features short video explanations (usually less than 5 minutes long) covering different educational topics. The clips are professionally animated using a wide range of visual illustrations to hook in the viewers and keep them engaged. These are short brain teasers to engage your learner in problem solving activities in which they have to make use of different learning skills to solve the riddles.