Fractions Using Visual Models vs Dear Aunt Sally

The best way to learn fractions. This app use visual model to help children to learn fractions concept, It covers adding, subtracting, multiplying and dividing fractions. FEATURES: • Learning fraction concepts using visual model • Fraction Multiplication: On the Grid • Dividing Fractions using the Area Model • Adding & Subtracting Unlike Fractions using butterfly method • Randomly generated fractions questions • Using share cookies concept to help children to understand subtracting unlike fraction • Using chick hatched out concept to help children to understand adding unlike fraction • No Ad, No in-app purchasing, No subscription FRACTION CONCEPTS: • Adding Fractions • Adding Mixed Fractions • Adding Unlike Fractions • Subtracting Fractions • Subtracting Mixed Fractions • Subtracting Unlike Fractions • Divide a Fraction by a Whole Number • Divide a Whole Number by a Fraction • Multiplying a Fraction by a Whole Number I • Multiplying a Fraction by a Whole Number II • Multiplying Fractions if you are interested in this app, you can watch the following video: https://www.youtube.com/watch?v=1xmR6gLGj2w https://www.youtube.com/watch?v=ND9H9ChJ_nU https://www.youtube.com/watch?v=AviPy6dEgm4 If you need help,please contact us by email: contact@kids17fun.com

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.