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I really am at a loss as to how to crack the teens for my 6 year old . they are impossible to recognise . to write them down they are backwards eg 61 or 60 for 16. he can recognise dot patterns in rows of 5 , up to 2 rows but show him 3 rows and no matter how often he is shown that that is 15 he can't get it . this is from KUMON homework which I think has just reached its limitation. I'm not yelling at him or pushing him ...but I can see that any quantity above 10 and up to 20 is unfathomable. moving from 29 to 30 is tough too...I'm trying to develop a visual imagery of tens and units by getting my 2 kids to count on the way into school except one always says twenty and the other says the units . so it is twenty....one twenty....two twenty....three and when we get to 29 then they swap and the other says thirty over and over while my daughter says the units. I'm hoping that will help to separate the problem of seeing twenty-two as a whole rather than too bits as outlined in number sense section .
HOW DID YOU CRACK THE TEEN PROBLEM ....I DON'T KNOW WHAT TO DO ...TIPS PLEASE. We are really stuck