Änderungen

*1999 - 2004 Demonstrator of curriculum and methods of teaching Mathematics at Department of Curriculum and Teaching Methods, Damietta Faculty of Education, Mansoura University.

*1999 - 2004 Demonstrator of curriculum and methods of teaching Mathematics at Department of Curriculum and Teaching Methods, Damietta Faculty of Education, Mansoura University.

*2004 - 2006 Assistant lecturer of curriculum and methods of teaching Mathematics at Department of Curriculum and Teaching Methods, Damietta Faculty of Education, Mansoura University from 16/3/2004 till November 2006

*2004 - 2006 Assistant lecturer of curriculum and methods of teaching Mathematics at Department of Curriculum and Teaching Methods, Damietta Faculty of Education, Mansoura University from 16/3/2004 till November 2006

*2006 - 2009 Co-worker of Ulrich Kortenkamp in Department of Informatics, Institute of Mathematics and Informatics, The University of Education Schwaebisch Gmuend from December 2006 up till now.

*2006 - 2009 Co-worker of Ulrich Kortenkamp in the Department of Informatics, Institute of Mathematics and Informatics, The University of Education Schwaebisch Gmuend from December 2006 up till now.

*2009 - 2010 Co-worker of Ulrich Kortenkamp in the Center of Educational Research in Mathematics and Technology (CERMAT), The Institute of Mathematics and Informatics, The University of Education Karlsruhe.

*2009 - 2010 Co-worker of Ulrich Kortenkamp in the Center of Educational Research in Mathematics and Technology (CERMAT), The Institute of Mathematics and Informatics, The University of Education Karlsruhe.

*2010 - 2011 Assistant Lecturer of Curriculum and Instruction of Mathematics, Department of Curriculum and Instruction, Faculty of Education, Menoufia University.

*2010 - 2011 Assistant Lecturer of Curriculum and Instruction of Mathematics, Department of Curriculum and Instruction, Faculty of Education, Menoufia University.