#BDAdyscalculia The BDA maths conference reinforced the idea that when investigating dyscalculia we are looking for that core deficit in estimating the number of objects in a set and the link between efficiency of dot enumeration and arithmetic. Well summed up by the Havana study “Inefficient dot enumeration itself almost guarantees poor arithmetic.” So this certainly has to be the focus (alongside other cognitive and literacy based assessments) when assessing maths to determine if it is dyscalculia or more of a general maths difficulty, or indeed linked to other SPLDs, further supported by Sarah Wedderburn’s comments that numerosity is the ‘root’ of the maths tree. I enjoyed the webinar by Janet Goring and plan-do-review approach, which backs up my thinking that this needs to be done with maths- schools use this a lot for literacy and the ‘well-founded intervention’ feeds into the dyslexia diagnosis as per the Rose report- but highlights the importance of this for maths: assessment needs to be based not only on formal assessment but on their response to intervention, as also mentioned by Butterworth, who stated that response to intervention is useful in deciding if difficulties are dyscalculic in nature. hashtag#bdadyscalculia