【實用教育app】BSC Cool Math|最夯免費app-綠色工廠好玩App

A broad range of math tricks and special formulas from pre-algebra to Calculus.Can you find the mean of: 83, 90, 79, 82, 84, 88, 86, 83, 88, 81 in your head?!? This program teaches you a trick to figure it out and other math problems too! Great for SATs, GREs, and students of Algebra through Calculus.There were 5 topics in version 1.0. There are 17 topics in version 1.01. I expect to add 5-10 more each month. The app is well worth 99 cents but it is free. I am in the process of writing "Quick Quiz code" to ALL of the topics (right now only the first bunch of 5 topics has computer generated quizzes). As for the topics, they are listed below:Algebra Shortcuts And "Proofs"Chapter 1: Axioms Chapter 2: Addition and Subtraction Tricks Chapter 3: Chicken And Rabbit Problems Chapter 4: Averages Chapter 5: Weighted AveragesCalculus Shortcuts for Calc AB (single variable)NOTE!! Calculus tricks are MUCH more difficult to prove and use.Chapter 6: Area Lesson 1 Chapter 7: Area Lesson 2 Chapter 8: Volumes Chapter 9: Incomplete. Chapter 10: Six Integrals You MUST KnowDivisibilityWhat are the tricks to find out if four digit numbers are divisble by say 8?Chapter 11: Divisibility by 5 and 10 and 100 and 1000 Chapter 12: Divisibility of 3 and 9 Chapter 13: Divisibility of 2, 4, and 8 Chapter 14: Divisibility of 6 and 15Random Stuff: Non-CurriculumExample: You have a binary 1010010101010111101010101010 is base 2. What is the same number in base 8?Chapter 16: Change bases quickly (certain bases) Chapter 17: Parity of Polynomials Very Short Proofs In AlgebraChapter 21: 3 and 9 Divisibility Rule Chapter 22: Infinite Geometric Series Formula Chapter 23: The Product of Two Negative Numbers Is Positive Chapter 24: Generating A Factorable Cubic or Quadratic Chapter 25: Graphing Lines and ParabolasMore Algebra I and II "Proofs" and DemonstrationsChapter 26: "Proof" Of Some Exponent RulesChapter 27: "Proof" That 3^(-2) = 1/9 (Why Negative Exponents Create Fractions)Chapter 28: "Proof" That 3^(1/2) = Square Root Of 3Chapter 30: Advanced Log And Exponent Problems