Child is almost 6. Still struggles with counting backwards. Counting backwards is a massive issue for him. Can count backwards from 20 not a problem. Cannot count backwards with any number higher than that. Struggles with the concept of "one less". E.g. he will count 29, 28, 27, 26, 25 then 27 and not understand why he's gone wrong there. Ask him what number comes before 7, he knows it's 6 but can't use that to work out that 26 comes before 27. Hope that makes sense. Child gets really upset and says he can't count. I get frustrated though I try not to show it. He loves maths apps so if there are any apps just for counting that anyone can recommend? Or is counting backwards too much to expect at his age? (His maths activity at school currently involve counting one more than and one less than hence why we've been doing this.) Thanks in advance.