The first video (Donald Duck in Mathamagic Land) was very interesting! It discussed how Mathematics exists in everything, from galaxies to plants, animals, architecture, paintings and even music! I was surprised to hear about the mathematical logic behind the harmony of notes. The next video discussed how the Golden Ratio is evident in everything, including the proportions of our bodies. Even Ancient Greeks used the Golden Ratio in most of their architecture and sculptures. Mathematics is even evident in games such as hopscotch and chess. Overall, this ratio is really cool and seeing it in various forms is intriguing.