The worksheet focused on redox reactions. During the students' independent work, I walked around the classroom and tried to help the students and explain their shortcomings. I was impressed that many pupils managed to fill in the sheets quickly and independently. Then, on the other side, there were pupils who did not have any basic knowledge of oxidation numbers, without which it is difficult to progress further and they did not mind it at all.
I was impressed that many pupils managed to fill in the sheets quickly and independently.