Effective writing is a keystone in the process of developing scientific knowledge. Scientists must be able to successfully communicate their findings so colleagues can confirm the authenticity of their claims through the replication of experiments. Students can develop this essential skill by engaging in the activity, "Write it, Do It." This effective strategy utilizes peer review to illustrate the need for clarity in scientific writing. Students write directions to build an original object from LEGO blocks, use another student's writing to build a second object from LEGO blocks, and review another student's written work for clarity and accuracy.