Most of the teachers expressed that the content is suitable for “scheme (readiness)”. Some teachers expressed that the content is not appropriate for the IQs and readiness levels of their own students. They expressed that this results from their insufficient education in primary school and its effects on their high school education. Some teachers who think that some sub-topic parts of math teaching are above the readiness level of their students recommend that the order of parts should be changed or they should be extracted from the program in order to
solve the problem. Similar to this, Yılmaz (2006) found that teachers have problems while carrying out the projects of the program and these results from the fact that projects are above the levels of students. Johnson and Howden (1987) also expressed that, while teachers were answering questions related to “individual differences”, they were reminded of cognitive qualifications such as problem solving, finding relations, modeling and expressing mathematically (as cited in Yılmaz, 2006).