I've got a few lower ability children in my Y3 class but it is becoming increasingly obvious that one in particular (Y2 Sat - 2c) has so many misconceptions/non-existent knowledge of place value. I asked him to add 8+1 the other day as part of something we were doing and he said 81 then 18. With concrete apparatus we got to 9. He frequently confuses one more and ten more, can't count accurately in different amounts, can't find a number on a hundred square without scanning from 0 and I'm sure other examples. I'm not sure where to start! He clearly doesn't understand the value of numbers. I don't think I've ever had a child who has such difficulties with place value. I'll be using lots of practical apparatus dienes blocks etc. but any recommendations will be greatly appreciated! Numicon is being hailed as the solution to all maths issues in our place but I'm not 100% convinced in this instance it's the best tool.