Delise Week 13

This week, the students took a unit assessment. Although this unit had not covered math facts or adding/subtracting with two digit numbers, they threw some in the assessment. This particular student has not struggled in math so far this year, so when I saw his assessment, I found it pretty interesting. the picture on the left shows this student who was able to solve c and d correctly, but did not solve a and b correctly. For c and d, this student added the two numbers horizontally. For a and b, this student subtracted, but upside down. He subtracted 7 from 8 and 4 from 6. His answers would have been correct if those were the problems, however, they were not. I am curious to see if these problems were written horizontally, how he would have done. In the picture on the right, the same student was given a two digit subtraction problem. Instead of subtracting, he added. It is kind of hard to see, but his answer was 66. Once again, if this was an addition problem, he would have gotten the problem right. I wonder if this student doesn't know what it means to add or subtract. I am also thinking that if he is able to put together numbers in some way (although it is wrong),  that he probably just needs some reasoning behind addition and subtraction. I would like to work with him to see how he does these problems, and start with him on a smaller scale, working up to double digit addition and subtraction.