Abstract: A teacher observation and evaluation system and method for mobile devices is provided, comprising providing a data server for storing and delivering selected information, including teacher data, rubrics, and other educational data; providing an administration server connected to the data server for controlling access by users; providing one or more wireless mobile devices connected to the data server via a wireless connection, wherein each mobile device includes an observation and evaluation rubric; observing a teacher in a classroom setting and inputting into the mobile device observation and evaluation data related to the teacher's performance; synchronizing the observation and evaluation data with the data server; and reporting the observation and evaluation data to selected administrative personnel.

Abstract: An at least partially flexible sealed package comprises an opening assembly that includes a sliding component and a lifetime indicator for indicating an expiry status of a product within a storage compartment of the package. Movement of said sliding component relative to the lifetime indicator serving to open a seal of said package and activate the lifetime indicator.

Abstract: A mechanism for opening and closing the sash of a window which includes first and second sash brackets, a drive mechanism, first and second flexible timing belts, structure for connecting the timing belts to the sash brackets and mechanisms for connecting the two timing belts. The structure for connecting the timing belts is adjustable in length to facilitate the tensioning of the belts. Tensioning springs are also included.