New Age music is typically classified under the Dewey Decimal Classification system as 781.649 - within the general category of Music and the subclasses of Theory, Composition, and Performance.
Native American music is classed under 788.3
I would guess the Dewey Decimal classification for a yearbook is 051, English language serials.
Twitter as a social media platform does not have a specific Dewey Decimal Classification number since the Dewey Decimal system primarily categorizes physical books by subject matter. Social media platforms like Twitter would not typically be found in library collections using the Dewey Decimal system.
The Dewey Decimal Classification for Smithsonian Maker Lab would likely fall under the 600s, which is the general classification for Technology.
900's
Mother Teresa of Calcutta would likely be found in the 200s section of the Dewey Decimal System, which is designated for religion. Specifically, she would be under 271, which is for Christianity.
The Dewey decimal number for Lego's would be 688.72. This classification is used for books and resources related to toys made of plastic blocks, such as Lego's.
808.8
You would look under the number 394.266 for books about Christmas feasts and festivals in the Dewey Decimal System.
Sharks would typically be classified under the Dewey Decimal System number 597.3, which covers topics related to cartilaginous fishes, including sharks, rays, and skates.
The Prometheus myth would likely be classified under the Dewey Decimal system as 292.213, which covers mythology of individual gods and goddesses in Greek mythology.
Automobile repair books would typically be located in the 629.2 section of the Dewey decimal system, which covers transportation engineering and automotive engineering.