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Reviewed by Wired.com:
"This was one form of multiplication that I’d never done before, but the app taught me very clearly. It makes multiplying large numbers easier, and allows you to see it all visually"
Endorsed by teachers
R. Zeni, Ecole Sandy Hill Elementary, Abbotsford, BC, Canada:
"The math apps by Esa Helttula allow students to practice and reinforce the specific computation strategies taught in class, with as much or as little scaffolding as necessary.
They also provide individualized feedback to each student, with an immediacy that is not always possible through pencil and paper practice. Being able to adjust the level of difficulty to suit their needs is also very motivating for the students. I am so glad to have come across this great educational tool!"
The Lattice Multiplication Method
Lattice multiplication is algorithmically equivalent to long multiplication. A lattice (a grid) guides the calculation. All the multiplications are done first and then the additions. The method was introduced to Europe in 1202 in Fibonacci's Liber Abaci.
In this groundbreaking book Fibonacci presented many algorithms for working with Arabic numerals. Ancient Indians and Chinese originally invented some of the algorithms. Fibonacci presented both the current standard long multiplication and also an originally Indian method called lattice multiplication, which is faster and more compact for working with larger numbers.
The Lattice Multiplication app
The Lattice Multiplication app allows the user to solve a lattice multiplication problem step by step and animates all the steps. In the steps the user will multiply or add. 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.
Settings:
- The multiplicand can have up to 5 digits
- The multiplier can have up to 3 digits
- Custom and random problems
- The current operation for each step can be hidden
- The operands for the current operation can be highlighted
- The speed of the animations can be set
Other iDevBooks math apps
iDevBooks math apps have been reviewed and endorsed by Wired.com, IEAR.org, Edudemic.com, Teachers with Apps, and other respected sites and organizations.
Feedback and requests for new features
New ideas to make this app better are welcome. Please visit idevbooks.com to give feedback.
Privacy
This app has no ads or in-app purchases and it does not transmit any data during the operation of the app. This app also does not contain any links to other apps or the web.
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价格历史
- 目前价格： $3.99
- 最小值: 免费
- 最大值: $3.99
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新版变化
- 版本: PC
- 已更新:
其他信息
- 发布日期:
- 类别:
Windows 应用›教育 - 操作系统:
PC,Surface Hub - 大小:
38 Mb - 支持的语言:
English - 内容分级:
EVERYONE - Windows Store 评分:
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«Lattice Multiplication». 平台： Windows. 类别： 教育. 开发商： «iDevBooks». 首次发布： . 最后更新： . 目前价格： $3.99. 最低记录价格： $0.00 (). 最高记录价格： $3.99 (). 该条目尚未在 AppAgg 上获得评分或评论。 列表: 公开: 1, 私密: 0. 可用语言： English. AppAgg 会跟踪 «Lattice Multiplication»的价格历史、评分和用户反馈。 关注未来折扣和更新： RSS. AppAgg 不托管应用程序或分发软件。 所有商标、徽标和屏幕截图均属于其各自所有者。
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