What is the french expression for show and tell?

There isn't a direct, single-word equivalent for "show and tell" in French. However, there are a few ways to express it depending on the context:

Formal:

* "Exposé-discussion": This is the most literal translation, combining the words "exposition" (show) and "discussion" (tell).

* "Présentation-discussion": Similar to "exposé-discussion", but using "présentation" (presentation) instead.

Informal:

* "Montrer et raconter": Literally "show and tell", but less commonly used in everyday French.

* "Faire voir et raconter": Similar to "montrer et raconter", but uses a slightly different verb for "show."

* "Exposé oral": This is more specific to a classroom setting, literally meaning "oral presentation."

Other options:

* "Atelier de partage": This translates to "sharing workshop," and could be used for a more interactive activity involving show and tell.

* "Moment de partage": This means "sharing time," and can be used for a general time for sharing experiences and objects.

The best translation will depend on the specific context and the desired level of formality.