Line Scenes

Line scenes belong to individual practice cards.

Use:

fscene:

for the front and:

bscene:

for the back.

Front Scene

- ¿Qué ves? [fscene:office, ans: "Describe what you see."]

The scene appears with the front content.

When the card flips, the scene flips away with the front.

Back Scene

- Describe la oficina. [bscene:office, ans: "La oficina."]

The scene appears with the back content.

Different Front and Back Scenes

A line can use different scenes on its two sides:

- ¿Qué cambió? [fscene:image.es.ch2.book-1, bscene:image.es.ch2.book-2, ans: "Describe lo que cambió."]

The first scene belongs to the front.

The second belongs to the back.

This can support activities involving comparison, memory, before and after, finding differences, and describing changes.

Random Line Scenes

A registered scene may support random composition.

Add .random to request an independently randomized line scene:

- ¿Qué ves en la oficina? [fscene:office.random]

The particular scene composition can change when the card is created.

Because the scene is independently randomized, authored text should remain valid regardless of the exact result.

For example:

- ¿Qué ves en la oficina? [fscene:office.random, ans: "Describe lo que ves."]

works because the prompt does not assume that a particular object is present.

Avoid an answer such as:

- ¿Qué ves? [fscene:office.random, ans: "Veo una impresora."]

unless the scene contract guarantees that a printer will be present.

Random Front and Back Scenes

The two card faces can resolve independently:

- ¿Son iguales? [fscene:office.random, bscene:office.random, ans: "Compara las dos oficinas."]

The front and back may therefore contain different scene compositions.

This makes independently randomized line scenes useful for observation and comparison exercises.

Important Distinction

Random line scenes are presentation tools.

They do not automatically coordinate their generated state with authored questions and answers.

When a generated scene must share its resolved state with generated questions and answers, use the Practice Set generated-scene model instead.

See Generated Scenes.