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These activities , which include both operational and R & D elements , are discussed in greater detail in the NSTC National Research and Development Plan for Aviation Safety , Security , Efficiency and Environmental Compatibility . Students will discuss theories for the different seasons , observe a demonstration on changing area with changing angles , and complete an exercise using geometers sketchpad that models this relationship . Raccoons , especially young raccoons , make a lot of noise . Librarians , who have been classroom teachers and trainers for many years , are beginning to see the explicit need and relevance for using online learning to educate end users , students , and patrons . In other words , every case begins as a case file , and is at that time confidential ( and is part of the record series which is designated agency item number 1 ) ; those cases which result in public hearings , or which result in public sanctions without hearings , become open records and move into the record series which is given agency item number 9 .