Use the Available Models box to filter the models based on the type of sample you wish to view. Once you have filtered by type you can further filter by grade level.
Many files have the option to view/listen/watch using this option attempts to use your web browser or autodetect a suitable program installed on your machine to view the file. If the system is unable to find a suitable program to view the file you will be given the option to download the file. Clicking download will initiate the download process.