Abstract :
This final project discusses the developmental errors produced by the
second graders of Tri Tunggal Elementary School Semarang in the academic year 2012/2013.The data of this final project are taken from the Math worksheets of the second graders of the school. The collected data were analyzed by using qualitative research. This means that the researcher only describes and explaining the developmental errors produced by the second graders.
In conclusion the researcher may say that developmental errors produced are concord errors and pluralization. The most dominant error found in concord
errors, reaches 55%. Pluralization errors are 45%. Twelve out of the whole class made the errors in their Math worksheets. It is proved that most of the students
may be categorized as smart students.