Filmstrip (noun)

1. A long, thin strip of celluloid or similar material containing a series of photographs, used to create a sequence of images in a slide projector.
2. A long strip of film carrying a series of still images, used in teaching and presentations.

Origin:

Late 19th century: from film + strip.

Examples:

1. The teacher showed a filmstrip to illustrate the steps of photosynthesis.
2. The filmstrip was a valuable resource for teaching about the history of the city.
3. Many schools still use filmstrips in their educational presentations.
4. The filmstrip was damaged and some frames were missing.
5. The filmstrip projector was a common tool in the classroom in the 1970s and 80s.