ABSTRACT

This  study  aimed  at  investigating  the  effect  of three  task  variables :  dependent  requsitions

 ( independent requsitions , dependent requsitions ) , the  number of  requsitions  (one requsition , two requsitions  ,  three  requsitions  ) , and the number of steps required for its  solution  (one, two steps , three  steps ) , on the ability of 10th basic grade  students to solve the static  electristy and the effects of electric current thermally and chemically  problems . Another porpuse  of this study was to investigate the effect of  sex , and physical ability level on the ability  of  students to solve verbally physical problems.

The  sample consisted  of  ( 280 )  10th  basic  grade  students  in Jenin  Schools , distributed over    (12)  schools (( 7) for male  and (5) schools for female .   

A test  was  developed by  the  reseacher ,  consisted  of  two forms  :  model A ( one , two , three  independent  requsitions  questions with one or two or thre steps for  each  requsition , model B ( one or two or three  dependent  requsitions with one or two or three steps for each requsition) .

( 50%)  of  every  section  were  randomly  given one of the two forms.

 The three -way analysis of  variance with  factor  design  (2*3*3)  was  used  to answer  the  first  seven  questions in this  study , and two way analysis of  variance with factor design ( 2*3)   was used to  answer  the  last  three  questions  in  this  study . T-test and scheffe test was used to test the significant differances. The results of analysis were as follows:

There was  a statistical  significant  differences  in  the  ability  of the  students  to  solve verbal1 physical problems due to the dependent requsitions , in favour of independent requsitions. There was  a statistical   significant  differences  in  the  ability  of  the students  to  solve  verbal physical problems due to the the number of requsitions , in favour of one requsition.

 There was  a statistical  significant  differences  in  the  ability  of  the  students  to  solve verbal physical  problems  due to the  number  of   steps  required  for  solution  of  each  requsition , in favour of one step for each requsition.

There  was  a statistical  significant  differences  in  the  ability  of  the  students  to  solve verbal physical  problems  due  to the two-way and three-way interaction between the three  structural variables in this study.

There was  a statistical  significant  differences  in  the  ability  of  the  students  to  solve  verbal

____________________________________________________