Session 2 is designed to reinforce Session 1. For that reason, it contains the same words as Session 1. For that reason, it can also be omitted altogether. The differences between Sessions 1 and 2 have to do with presentation. In Session 2 flash lessons, words are randomized across categories. In Session 2 multisensory lessons, words appear in a different order but remain separated by category. Fonts are also randomized.