This is the better by far app I have ever came across 

<div class="wp-caption alignnone" style="width: 800px"><img alt="The image shows a collage of mathematical terms such as algebra, decimals, equations, numbers etcetera. The words are written horizontally, vertically, and in different colors." height="369" src="https://data.ulearngo.com/assets/a0abbc42-60a1-4cf3-bbd3-78129c8e42db" width="800"/><p class="wp-caption-text">Algebra has a language of its own. The picture shows just some of the words you may see and use in your study of Prealgebra topics.</p></div>
<p>You may not realize it, but you already use algebra every day. Perhaps you figure out how much to tip a server in a restaurant. Maybe you calculate the amount of change you should get when you pay for something. It could even be when you compare batting averages of your favorite players. You can describe the algebra you use in specific words, and follow an orderly process. </p>
<div class="wp-caption alignnone" id="attachment_322641" style="width: 975px"><img alt="" class="size-full wp-image-322641" height="450" src="https://data.ulearngo.com/assets/3ae4420b-ecdd-4cad-8117-594cf58a95eb" width="975"/><p class="wp-caption-text">This hand may change someone’s life. Amazingly, it was created using a special kind of printer known as a 3D printer. (credit: U.S. Food and Drug Administration/Wikimedia Commons)</p></div>
<p id="fs-id1167270921905">For years, doctors and engineers have worked to make artificial limbs, such as this hand above for people who need them. This particular product is different, however, because it was developed using a 3D printer. As a result, it can be printed much like you print words on a sheet of paper. This makes producing the limb less expensive and faster than conventional methods.</p>
<p id="fs-id1171791613092">Biomedical engineers are working to develop organs that may one day save lives. Scientists at NASA are designing ways to use 3D printers to build on the moon or Mars. Already, animals are benefitting from 3D-printed parts, including a tortoise shell and a dog leg. Builders have even constructed entire buildings using a 3D printer.</p>
<p id="fs-id1167270900802">The technology and use of 3D printers depends on the ability to understand the language of algebra. Engineers must be able to translate observations and needs in the natural world to complex mathematical commands that can provide directions to a printer. In this tutorial, you will explore the words used to describe algebra and start on your path to solving algebraic problems easily, both in class and in your everyday life. You will be introduced to the language of algebra and take your first steps toward working with algebraic concepts.</p>

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Introduction to the Language of Algebra

Mathematics studies measurement, relationships, and properties of quantities and sets, using numbers and symbols. Arithmetic, algebra, geometry, and calculus are popular topics in mathematics.

Mathematics

Learn to identify and simplify algebraic expressions, evaluate expressions, and translate word problems into algebraic equations in this comprehensive tutorial on the language of algebra.


Introduction to the Language of Algebra

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