Whether it's teachers or students using Mathemagics, this app will likely impress most math enthusiasts –- and maybe create some new math fans out of students who once thought math was hard but who now know ways to breeze through problems with these new mental math skills.Continue reading Show less
Mathemagics - Mental Math Tricks is an app that shares math tricks and shortcuts with students. For middle and high school kids seeking to increase speed in math for standardized tests or college test prep, it's a one-stop shop for dozens upon dozens of tricks explained in detail. They range from the very straightforward, such as the two-step trick for "Easily Multiply Any Number By 9," to the five-step shortcut for "Large Number Subtraction" and everything in between. Tricks are divided into six categories: Standard, Turbo Boost, Divisibility, Perfect Squares, Casting Out Nines, and Casting Out Elevens.
Kids can choose from three modes of play: Learn, Practice, and Play. In Learn, kids choose a trick to learn from a list by tapping Tricks. Tricks ranging from multiplication to perfect squares pop up with step-by-step explanations to read. Review tricks in Practice mode by once again choosing a trick from the same list and answering a number of multiple-choice practice problems. If kids aren't getting the correct answers, they can view the lesson from that mode again. In Play mode, kids answer tricks in random order. Only basic math skills in addition, subtraction, simple multiplication, and division are needed to learn any of these tricks, many of which focus on ways to speed up basic math skills learned in second through sixth grades.
Although the app states that you only need to know the four basic operations, many students will need to review and possibly master those basic skills acquired in elementary and early middle school grades before they're ready to tackle some of these tricks and use them on tests, in homework, or to impress friends (players can share high scores via the Game Center social network). Also note that this app isn't just for students. The developer of Mathemagics suggests: "Teachers, inspire your students as you pull answers to math problems out of thin air." There are so many tricks here that even seasoned math teachers may learn one or two new shortcuts.
Key Standards Supported
Expressions And Equations
Use square root and cube root symbols to represent solutions to equations of the form x2 = p and x3 = p, where p is a positive rational number. Evaluate square roots of small perfect squares and cube roots of small perfect cubes. Know that √2 is irrational.
Number And Operations In Base Ten
Use place value understanding to round multi-digit whole numbers to any place.
Fluently add and subtract multi-digit whole numbers using the standard algorithm.
Multiply a whole number of up to four digits by a one-digit whole number, and multiply two two-digit numbers, using strategies based on place value and the properties of operations. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models.