The best method to teach the concept of germination of a seed is to:

CONCEPT: Experiential (activity-based) pedagogy holds that learners build clear, lasting understanding of a concept when they physically engage with the material and observe the outcome themselves, rather than only receiving a second-hand description of it through explanation, a sketch, or a photograph.

APPLICATION: To teach germination as a live biological process, students should be given seeds to plant (in soil or a wet paper-towel set-up) and asked to observe and record the stages over several days — the seed swelling, the root (radicle) emerging, and then the shoot appearing. This lets them directly experience the change happening over time rather than being told about it.

CROSS-CHECK: None of the other options let a student witness and record the actual change directly:

• Verbal explanation describes the process in the abstract without students seeing it occur.

• A board sketch with a description is a single static snapshot drawn by the teacher, not a process unfolding over time.

• Photographs of seed growth are also pre-made static images of a process that happened elsewhere, not one the student is tracking themselves.

Hence the most effective method is to have students plant seeds and observe germination themselves.