After we did two types of sand together, he did the rest on his own.
or
After we had done two types of sand together, he did the rest on his own.
Which one is correct?
The second (although I don't know what "had done two types of sand" means) because of the rules of sequence of tenses.
thank you this is the whole paragraph
I helped a student with his sand lab because he did not have a partner. I helped him find different objects in the sand. I also showed him that switch the magnification will show different images. After we had done two types of sand together, he did the rest on his own. He would call me over to show me the items he found in his sand.
If you could look over this thank you
Both sentences are technically correct, but they have slightly different meanings.
The first sentence, "After we did two types of sand together, he did the rest on his own," implies that both "we" and "he" completed two types of sand together, and then "he" continued to do the rest on his own. This sentence suggests that "we" and "he" were working together initially, but "he" took over and completed the task independently.
The second sentence, "After we had done two types of sand together, he did the rest on his own," suggests that "we" completed two types of sand together, and then "he" continued to do the rest on his own. The use of "had done" implies that the action of completing the two types of sand occurred before the rest of the task. This sentence implies a chronological sequence of events.
In conclusion, both sentences are grammatically correct, but the difference lies in the implied meaning and the timeline of events.