Here are some responses to my question, "What is a suggestion that you have to make the activity better?":
"I thought it was a good lesson you had us do. I understood most of it. Could you maybe reteach us the questions like (2.6 + x = +1.4 )?"
"Nothing it was good. I learned new things"
"If we can't have calculators then it would be nice if the questions were easier, or we could practice more"
"They were pretty boring, maybe we could [have] a more fun/creative way of doing things"
Below, you will find the results of a survey that students completed to show their interest in the activity and their understanding. They responded on a scale of 1 to 5, where 1 indicates the least and 5 indicates the most.