What is the constant of my science fair experiments?

Experiment 1: People take a math test first with pop/rock music then classical then with no music at all i checked them for the scores to see if music affected their results Experiment 2: test subjects will listenn to a listening passage while they draw then they will take a test later they will listen to... show more Experiment 1:
People take a math test first with pop/rock music then classical then with no music at all i checked them for the scores to see if music affected their results

Experiment 2:
test subjects will listenn to a listening passage while they draw then they will take a test later they will listen to another passage with only listening then they'll answer question. i will check to see if drawing helped them or not.

experiment 3:
people will rub their stomach pat their head and say a tongue twister
1 answer 1