Counting..

Jayden has no problem counting in sequence correctly from 1-10. However, recently that he learns beyond 10, from 11 onwards.. his sequence from 5-7 got messed up.. Nevertheless I attempt to remind him everytime I hear it.. It is slowly getting back on track.. :o)

1, 2, 3,........10, 11, 12, 14... Opps.. where is 13??? He always missed out number 13.. and lately 15 too! :P