Visit at least three different sites/places (house/temple/school/public toilet/community hall...etc) in your village or near by location and draw a simple sketch indicating how ventilation is implemented for the places you have visited. Write your name and the name of the site on your sketches.
Once you have made your sketches, convert them to a digital format. The simpliest way to do so is using a digital camera, e.g. from a cell phone. You also can use a drawing program to make your sketch and save it digitally.
When you have three files with your three sketches,you are going to upload them into this special forum. To do so: 1) Press the Answer button; 2) Write a short text explaining the three sites you have visited; 3) Upload the three files. Be sure to save to complete this action.
Once you have uploaded your own sketches, you will be able to see sketches uploaded by other students. You may ask them questions for clarification via this forum. You can also give your opinion in a friendly way :).