thiagarajan 4d model
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S. Thiagarajan. Published 1974. Education. Presented in the sourcebook for the teacher rduCgtor is the Four -D model (define, design, develop, and disseminate) to be used for developing instructional materials for training teachers of exceptional children. Listed at the begOning of chapters are instructional objectives; included when ... data cambodia 4d 2023
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