Reproduces the contents of a CEEP instructional module on the concept of radioactive decay. Includes objectives, materials, procedure, and summary questions. Reproducable illustrations also included. (MA)

Contains the contents of the Student Investigation booklet of a Crustal Evolution Education Project (CEEP) instructional modules on earthquakes. Includes objectives, procedures, illustrations, worksheets, and summary questions. (MA)

Describes seven strategies used to make CEEP modules readable and appealing to students. These include involving classroom teachers in writing the modules, early analysis of word- and concept-levels, and using a list of familiar words in editing the modules. (MA)

The three stages of evaluation of the instructional modules of the Crustal Evolution Evaluation Project (CEEP) are described. Self-instructional evaluation procedures were developed and used. These are presently available to science educators through NAGT or the ERIC system. (SA)