Didacticism in art can be tricky to pull off well. You can have a band like Rage Against the Machine, whose politics are notoriously and very obviously left-wing, get co-opted by their political opponents who can’t see the irony in their choices. Even successfully didactic art is subject to taste, because some people don’t find a lecture all that inspiring. While the ideal balance between art and education isn’t always the same for every project, it does need to be considered. This week’s batch of movies finds Agnès Varda, no stranger to directness, pushing that balance in interesting ways.