To fully assess the success of the intervention it is necessary to analyse the visualizations of the Tricky Topic quizzes. By comparing the results of the pre- and post- intervention quizzes for individual students or across the whole class, it is possible to identify learning related to each Stumbling Block.
Improved understanding of the stumbling blocks will vary but the specific improvements on targeted stumbling blocks should be observable for each individual student and across the whole class. You may find that some children it increased their understanding of one stumbling block whilst others it was another.