do the use of the content of experimental sciences books in primary school by students result in developing attention domain, ability of analysis, ability of innovation, ability of argument and deduction, ability of generalization, as well as in strengthening jud ment faculty on them?Concerning the principles of thought many theories are offered by the experts that each of them emphasize a special aspect and therefore different definitions have been suggested. According to Dewey, thought has three aspects: 1- Comprehension 2- Judgment 3- Deduction

1. Barou, R, (2000), Introduction to philosophy of Education, London. 2. Dewey, John. (1985) Problems of Man- Philosophy of Education. Paterson, New Jersey- Little field- Adams and Co. 3. Brown, George lsaac, Mark Philips, and Stewart shaprio, (1976) Getting It all together confluent- Education. Bloomington, Lnd, phideltel kappa Educational Foundation. 4. Miller, John P. (1076) Humanizing the Classroom. New York. Praeger. 5. Dewey, John. (1910) How we Think. New York, P.C Health and Co. 6. Dewey, John. (1933) Experience & Education. New York. The Macmillan Company. 7. Dewey, John. (1938) Logic. The Theory of inquiry. New York. Henry Holt and Company.