Students were shown several videos from the Stanford EdX course "How to Learn Math: for Students" over the course of the school year.
At the end of the year (June) they were given the same survey questions that they had answered before watching anything (August).
The questions are taken from the online course itself, and I have identified three categories in which to group them. The questions were not asked in this order.
The scale used is
1: strongly agree
2: somewhat agree
3: somewhat disagree
4: strongly disagree
The numbers are percentage of grades 7 and 8 students.
Attitude Towards Mathematics
Not a great change in the distribution, still roughly 60% of students enjoy maths and don't find it boring, but only 30-40% enjoy being challenged to solve difficult problems. A slight shift towards a more positive attitude was observed on all questions of this type.
Nature of Mathematics
The message of the online course was mostly targeting the misconceptions commonly held that mathematics is difficult for most people and that there isn't much they can do about it.
It is clear from the responses here that the message was well-received by students and we can see a definite shift towards more positive attitudes.
Perception of Ability
Half of students expressed negative self-perception of mathematical
ability in most such questions, though they believe they can do well,
if they make enough
effort. This confidence has grown since the beginning of the year, again influenced by the message of the videos, it seems. There was a video about growth mindset and likening mathematical to sporting ability in terms of the benefits of training.