I would really like to start gardening with my preschooler. I don't know how and where to start. Can anyone give me some ideas? We don't have plenty of space for a garden, so I'm thinking of starting in pots.

For a start, even in school, they will taught to grow bean sprout, so you can start from there. The easiest to grow. Slowly you can try others like onion, celery, pandan leave. I even try papaya. Let them eat the fruits and dry the seed and educate them by trying.