The image shows a wooden structure on a table in a classroom. The structure appears to be made up of multiple wooden blocks stacked on top of each other. The blocks are arranged in a way that they form a tower-like structure, with the top block being the largest and the bottom two being the smallest. The table is covered with a green tablecloth and there are other wooden blocks scattered around the table. In the background, there are bookshelves and a window with white curtains. A person can be seen working on the structure.