Placemarker Slide App turns any Slide image into a quick response activity. There is also a predefined set of commonly used backgrounds, namely the grid coordinate, the World map and USA map. If you allow changes to be done in the answer after submission, activate the 'Allow answer changes.' This is a free-form response and no validation of answers is provided.
Students can drag their unique Placemarkers containing their avatars to the image which is mirrored to the Teacher's view.