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https://t.me/mathin2049 https://vk.com/mathin2049 Support the channel: https://boosty.to/mathin2049 00:00 - SCHOOLCHILDREN KNOW MATH WELL? 00:30 - WHY DOES THIS HAPPENS? 01:20 - IS IT EASY? 02:05 - REFRESH OUR MEMORY: MULTIPLICATION 03:30 - REFRESH OUR MEMORY: EQUALITY 04:25 - A SIMPLE IDEA THAT MANY DO NOT UNDERSTAND 05:40 - WHAT ARE BRACKETS? 08:40 - HOW TO OPEN BRACKETS? 09:45 - FORMULAS. BUT FIRST, A JOKE 12:44 - A LITTLE ABOUT AXIOMS 16:15 - HOW TO COUNT TO FEEL NUMBERS 18:10 - THE FORMULA FOR REDUCED MULTIPLICATION CAME OUT BY ACCIDENT 19:14 - WHY ARE FSU SO DIFFICULT FOR SCHOOLCHILDREN? 20:00 - WHY IS FSU HARMFUL TO TEACH? 21:43 - REDUCED MULTIPLICATION FORMULAS VISUALLY 23:00 - The pictures here are just funny 25:05 - APPLICATIONS OF THE DIFFERENCE OF SQUARES WHICH ARE NOT IN THE TEXTBOOK Videos mentioned in the video: 1. About transformations: • UNDERSTANDING ALGEBRA DEPENDS ON THIS PRO... 2. Mathematical induction: • WHO IS THIS MATHEMATICAL IND... 3. Minus by minus = plus: • WHY IS MINUS BY MINUS A PLUS?