Improve math skills of your kids - Learn step-by-step arithmetic from Math games

Math: Unknown - Step-by-step math calculation game for iOS.

Math: Unknown is much more than a math game. It is a step-by-step math calculation game which will teach users how to calculate in the correct order rather than just asking only the final calculated results.

The app consists of four basic arithmetic operations which are addition, subtraction, multiplication and division. In order to get started, users who are new to arithmetic can learn from animated calculation guides showing step-by-step procedures of solving each type of operation. It is also helpful for experienced users as a quick reference.

Generally, addition and subtraction may be difficult for users who just start learning math especially when questions require carrying or borrowing (also called regrouping). The app helps users to visualize the process of carrying and borrowing in the way it will be done on paper. Once users understand how these operations work, they are ready to learn multiplication and division.

For most students, division is considered as the most difficult arithmetic operation to solve. It is a common area of struggle since it requires prior knowledge of both multiplication and subtraction. To help users understand division, the app uses long division to teach all calculation procedures. Relevant multiplication table will be shown beside the question. Users will have to pick a number from the table which go into the dividend. Multiplication of selected number and divisor is automatically calculated, but the users have to do subtraction and drop down the next digit themselves. Learning whole calculation processes will make them master it in no time.

Math: Unknown is a helpful app for students who seriously want to improve arithmetic calculation skills.

Working Model for Design Simulation

The world's most popular CAE tool, Working Model is a conceptual design tool that allows you to create simulations that replace vague, time consuming, inaccurate “back of the envelope” calculations. Working Model has been adopted by thousands of professional engineers to create and analyze real-life mechanical systems. It has been designed from the ground up to optimize performance on the Windows 2000/XP operating systems. Working Model includes automatic collision detection and responses for NURBS geometry. Our latest release also includes such popular scripts as Flexbeam, Shear and Bending Moment, and Pin Friction. These scripts have been customized to expand your use of Working Model.

At every stage in the product development cycle, Working Model lets you do more. What used to take days now takes hours, giving you more time to do the job, and saving your company money. In fact, many of our customers say that Working Model paid for itself the first time they used it.

Thousands of professional engineers use Working Model to accurately simulate the physical world.

Its ability to import DXF drawings, combined with diverse and easy-to-use editing capabilities, and DDE connections to Matlab and Excel, provides a complete professional tool for engineering simulation.

Working Model helps you design, test, refine, and verify mechanical, biomechanical, and structural assemblies. Working Model saves you time and money by avoiding expensive prototyping and product failures and allows you to explore “what-if” scenarios.

Finding engineering difficult?
Sometimes the most difficult part of engineering is understanding the maze of equations in the textbook. Working Model makes sense of the math and lets you visualize and interact with otherwise difficult concepts.

Move beyond a topic
Working Model allows you to explore physics on a more meaningful level than can be taught on paper or at the chalkboard. You can study what-if scenarios and create nearly any simulation imaginable. Have fun experimenting and inventing new machines, environments, and models.

School-to-work skills
Working Model is a powerful tool used by thousands of professional engineers worldwide. The skills learned by using Working Model in school are directly applicable to on-the-job analysis of 2D motion simulations.


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