Dear Aunt Sally 4+
Neil Rohan
iPad対応
-
- 無料
スクリーンショット
説明
PEMDAS is an acronym that is taught in school classrooms across the nation. It helps students remember the priority, or Order of Operations, used to solve expressions involving strings of numbers and operators. It stands for:
P(arenthesis)
E(xponent)
M(ultiplication)
D(ivision)
A(ddition)
S(ubtraction)
A familiar mnemonic widely used in place of PEMDAS is: Please Excuse My Dear Aunt Sally. Thus the name of this application... Kind of an inside joke for the mathematical types.
Computers, including smart phone calculators, desktops, etc. have built in functionality to properly interpret such expressions so we don't have to. But have you ever wondered what algorithms the CPU executes to get the right answer every time? This app demonstrates one such algorithm called the Shunt Yard, developed a few years back by Professor Edsger W. Dijkstra.
We’re going to take a closer look under the hood at Order of Operations algorithms. It will interest programmers and school students alike; for programmers, the use of queues and stacks will reinforce previous computer science learning; for students, it allows them to write an expression, then analyze it using Order of Operations rules, step by step. The Quiz mode generates random expressions of user selected lengths and magnitudes and checks the student's answer. Incorrect answers can be examined using the same step by step process.
In the SOLVE mode, algebraic expressions are entered free hand using an internal keyboard which limits entries to the five common mathematical operators (+ - / * ^) as well as one level of parenthesis. There is a maximum term limit of ten variables, but no limit to their magnitude in this mode.
In the QUIZ mode, between two and ten variables can be selected, their maximum value and which operators that are eligible. The program then randomly generates an algebraic expression using these parameters.
Both modes make available an analysis page which is used to step through the solution. Stack/Queue dynamics are displayed.
新機能
バージョン 4.1
User Guide; iconic menus
アプリのプライバシー
デベロッパである"Neil Rohan"は、アプリのプライバシー慣行に、以下のデータの取り扱いが含まれる可能性があることを示しました。詳しくは、デベロッパプライバシーポリシーを参照してください。
データの収集なし
デベロッパはこのアプリからデータを収集しません。
プライバシー慣行は、ご利用の機能やお客様の年齢などに応じて異なる場合があります。詳しい情報
情報
- 販売元
- Neil Rohan
- サイズ
- 11.5MB
- カテゴリ
- 教育
- 互換性
-
- iPhone
- iOS 12.0以降が必要です。
- iPad
- iPadOS 12.0以降が必要です。
- iPod touch
- iOS 12.0以降が必要です。
- Mac
- macOS 11.0以降とApple M1以降のチップを搭載したMacが必要です。
- Apple Vision
- visionOS 1.0以降が必要です。
- 言語
-
英語
- 年齢
- 4+
- Copyright
- © 2024 Neil Rohan
- 価格
- 無料