Document Type : Research Paper

Author

Abstract

In developing textbooks and curricula. Knowledge generation should be considered as a very important strategy. instructional materials have a crucial role in learning and also in enhancing thinking skills. Thinking skills, therefore , nwwd to be taken intro account, while designing and producing sush materials. In addition eight processes for thinking namely , concept forming , principle forming comprehension problem solving decision making researching and integrating ,play a fundamental role in knowledge generation . among these , problem solving skill because of its close relation to knowledge generation , will be taken intro account in the present paper.

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