A staircase of cubes and handshakesLesson 130 of the lessons course of Mova's primary school: 3 sentences, each with its syntax tree and pragmatics. The lessons are written for Mova, and their agreed trees are part of Mova corpus 0.4 (CC BY-SA 4.0).0A staircase of 4 steps built of cubes has 1, 2, 3 and 4 cubes in its steps: 1 + 2 + 3 + 4 = 10 cubes.1The same sum counts handshakes: of 5 children, the first shakes hands with 4 others, the next with 3 new ones, then 2, then 1, so 4 + 3 + 2 + 1 = 10.2Pair the numbers from both ends to add fast: 1 + 4 = 5 and 2 + 3 = 5.← previousSisters and brothersnext →The times table in stories↑ back to LessonsThis page in Markdown → https://md.mova.elamur.ai/free/en/corpora/school/lessons/130-staircase-and-handshakes/