DNA Replication, Transcription, Translation: What is the Difference?

The curriculum for science in seventh grade covers cells, their basic structure and function, as well as heredity.  Beginning with the cell, I cover the stages of mitosis.  Within these stages is the process of DNA replication.  Students demonstrated their understanding of replication but when I began the process of transcription, I found that students began to become confused as to how the two processes are different and the purpose of each process is different.  It was very difficult to clarify their ideas and I feel that they still are carrying some misconceptions and confusion concerning replication and transcription.

The purpose of this unit is to help students develop a clear understanding of the process of DNA replication, transcription and translation as it relates to the purpose of each process in the development of the body.