Sandra shows Marie how to make her own watercolor paint by mixing colors from pigments to a binder. She also explains the characteristics of various paintbrushes.

Simon and Marion discuss bike traffic problems in Paris, which are exacerbated by the proliferation of bike rental services. Simon also explains to Marion how to use Vélib'.

Sandra continues to explain the different colors of the color wheel. She also gives a great explanation of complementary colors and how to obtain the best color combinations.