investigate of designing teaching strategy list on levels of understanding and its effect in developing compound thinking for the students of fourth class Scientific

The research aim to investigate the effect of designing teaching strategy list on levels of understanding mathematical in developing compound thinking for the students of fourth class Scientific in the city of Mosul for the academic year (2017 - 2018). The total of the research sample members (126) students (boys and girls) distributed into four groups, two of them are experimental by (33) students (boys) and (28) students (girls), and two control groups by (35) students (boys) and (30) students (girls), the experimental groups have been teaching according to designing teaching strategy, and the control groups have been teaching according to traditional method.To achieve the aim of the research, the researcher has put hypothesis zero major included three sub hypotheses zero, to test this hypothesis the Researcher prepare tool to test of compound thinking formed from (4) events have been marked by total test validity and reliability and psychometric characteristics, After data collection and statistical analysis using (SPSS) results showed the following:1.There is a statistically significant difference at level (0.05) between the means of the development of compound thinking to the students of experimental groups (boys and girls) and students of control groups (boys and girls) according to teaching method in the interests of the experimental groups.2.There is no a statistically significant difference at level (0.05) between the means of the development of compound thinking to the students (boys) of experimental and control groups and students (girls) of experimental and control groups according to the variable of the gender.3.There is no a statistically significant difference at level (0.05) between the means of the development of compound thinking according to interaction between method and gender.