# Long Multiplication by iDevBooks

Long Multiplication, by Esa Helttula of iDevBooks -  This math app is just one of many invaluable teaching tools for teaching math in a concrete, demonstration format, where numbers move to their appropriate place. For students, this is a simple, yet exact, a straight forward visual lesson on how long multiplication is set up and solved in a step by step formula. This is not a new app, but it definitely falls into the category of Tried and True Classroom Apps and the developer is included in Teachers With Apps' list of  Top Ten Outstanding Developers of 2011, he's also a  TWA CERTIFIED DEVELOPER. The students that we have been working with were in awe as they watched the numbers glide to their positions and neatly set the problem up for them guaranteeing that all of their columns were where they needed to be. Long Multiplication is not a groundbreaking game, but rather a best practice solution to a much needed basic concept that students need to master as they will be using this all throughout their lives.

The app allows you to solve random and custom multiplication problems using the long multiplication method and guarantees success every time! The method is also known as the column multiplication method as opposed to lattice method. Long Multiplication provides the user with a problem and then virtually, step by step, directly animates the numbers. In the steps, the user will multiply or add.

The numbers are aligned automatically so that you can concentrate on solving the operations for each column. After you solve the operation for each column the correct answer will fly to the right place. If the user presses the wrong button the answer will appear above the keyboard but it will not move.

The App Has the Following Settings

• The upper number can have up to 5 digits
• The lower number can have 1 or 2 digits
• You can use random problems or enter your own
• The current operation for each column can be hidden
• The operands for the current operation can be highlighted
• There are 3 different themes: black, gray and gold
• Speed of the animations can be set
• Native interfaces for iPhone & iPad

The new feature in version 1.5 - users can now choose the position of regrouping (either above or below equation). This feature was requested by a teacher who uses the app to teach students who are struggling in math. Now she can set the app to work like the examples in the textbooks that her students use. Students can practice long multiplication with up to 5 digits in the upper number, 1 or 2 digits in the lower number, enter a customs problem, hide the current operation for each column, highlight the operands for the current operation, choose from three different color schemes, and change the speed of the animations.

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1. […] 8. Long Multiplication by Esa Helttula & iDevBooks – This math app is just one of many invaluable teaching tools for teaching math in a concrete, demonstration format, where numbers move to their appropriate place. For students, this is a simple, yet exact, straight forward, visual lesson on how long multiplication is set up and solved in a step by step formula. This is not a new app, but it definitely deserves to be included in this list. The developer was included in Teachers With Apps’ list of  Top Ten Outstanding Developers of 2011. The students that we work with are always in awe as they watch the numbers glide to their positions and neatly set the problem up for them, guaranteeing that all of their columns will be where they need to be. Long Multiplication is not a groundbreaking game, but rather a best practice solution to a much needed basic concept that students need to master. They will be using this information all throughout their lives. This developer has an entire suite of mainly math apps; all excellent, concise, & easy for students to grasp the core concept. (Full review) […]

2. […] Long Multiplication, App by Esa Helttula & iDevBooks – iPad and iPhone math apps is just one of many invaluable teaching tools for teaching math in a concrete, demonstration format, where numbers move to their appropriate place.  […]