The effect of using brainstorming strategy on developing some mathematical thinking skills on both sides of the brain for tenth grade students  

Abstract
The study aimed  at knowing the effect of using the strategy of brainstorming in developing some mathematical thinking skills in both sides of the brain for the students  of grade eleven scientific section, the researcher used the experimental method .
To  achieve the objectives , the following tools were used :
1. The brain dominance test .To classify the students concerning the dominant side.
2. A test designed by  the researcher: relates some mathematical thinking skills. It is  a test that includes 24 items distributed to six fields (deduction , induction , correlated thinking , question answering , symbols and survey) four test items were eliminated as their grades were weak.
The test was shown to a group of specialists in curricula and methodology and a group of teachers to arbitrate. And after  arbitration and modification it was carried out on experimental sample of 30 students to calculate its verification and constancy, the evaluation of constancy was done on an experimental sample using the halves retail and the correlation coefficient was (0.86) and persistence factor was (0.92) the difficulty level and coefficient of excellence were calculated .
The following statistical methods were used :
1. Recurrences , arithmetic average and percentage .
2. T-test for two independent samples .
3. (Mann-Witney) test to the independent samples (small and big samples) .
4. (Kruskal-Wallis) test to three independent samples .
The community study includes all the  scientific grade students in the government-run schools in Khanyounis governorate who were (4725) student , male and female.
The study sample was 60 students , 30 as a standard group and 30 as an experimental one. The sample was chosen purposely. The researcher was sure of the equivalence of the two groups concerning the age and the previous knowledge of maths. The test was implemented on the study sample in the second term of the scholastic year 2016-2017 the teaching of the appointed unit was taught by the strategy of brainstorming to the experimental group  and traditional way to the standard group .
 
The study has concluded the following results :
1-There are no statistically significant differences in level () between the grades average of both group in the post test of developing some mathematical thinking skills for the right- sided brain  students in favour of the experimental group and the left- sided brain  students in favour of the experimental group.
2-There are statistically significant differences in level () between the grades average of both groups in the post test of developing some mathematical thinking skills for the students of both dominant sides (left and right side of the brain) in favour of the experimental group.
3-There are no statistically significant differences in level () between the grades average of both groups in the post test of developing some mathematical thinking skills attributed to the dominant side of the brain (right, left , both) .
 
The study has recommended the following:
1- Enhance the teaching strategies that develop thinking skills among students, sports and strategy brainstorming and other .
2- The diversity of the formulation of questions in the mathematics curriculum to cover all the skills of reflection on (the right side, left side, both sides) of the brain .
3- Teach students mathematical thinking patterns and steps to resolve the matter in the sports aspects of the brain in control of others .