About Shelby Joe

Shelby Joe 周 is the Founder of Piqosity. He has more than 20 years of experience in education as an entrepreneur, professor, and tutor. Shelby earned his BA in Political Science from Rice University. Born and raised in Mississippi, he now resides in Houston but has also lived in Beijing, Shanghai, and Hamburg.

ISEE Math Review – Fractions and Decimals

Rational numbers are numbers that can be represented as a fraction whose numerator and denominator are both integers. Fractions Overview The numerator is located in the top portion of a fraction, and the denominator is located in the bottom portion of a fraction. The denominator cannot be zero, as any number divided by zero [...]

By |2022-08-05T12:50:40-05:00August 5th, 2022|ISEE: Upper Level Math Review|

ISEE Math Review – Operations on Algebraic Expressions

In a nutshell, Algebra is arithmetic using known and unknown quantities. These unknown quantities are called variables and are represented as a letter (x) or a symbol. You have already evaluated some algebraic expressions by substituting certain values for some or all of the variables within the expression. Now, let’s apply what we know [...]

By |2022-08-05T11:34:26-05:00August 5th, 2022|ISEE: Upper Level Math Review|

ISEE Math Review – Matrix Multiplication, Standard Deviation, and Trigonometry

The Upper Level ISEE is used for application into 9th through 12th grade. Thus, the ISEE sometimes includes some higher level math concepts designed for students who have completed Algebra II or Pre‐Calculus. We have included three of these concepts so that you know what they look like so you can determine for yourself [...]

By |2022-07-29T14:00:55-05:00July 29th, 2022|ISEE: Upper Level Math Review|

ISEE Math Review – Solid Geometry: Surface Area and Volume

Triangles, polygons, and circles are all considered two‐dimensional objects, and you’ve learned how to find the perimeter and area of these objects. You will also need to know how to analyze the measurements of their three‐dimensional counterparts, or solid geometry. For solid geometry, you will need to know the volume and the surface area [...]

By |2022-07-29T12:27:54-05:00July 29th, 2022|ISEE: Upper Level Math Review|

ISEE Math Review – Units of Measurement

The United States uses what is known as the U.S. Customary Units, a variation of the Imperial system, for its measurement values. Most of the rest of the world uses the International System of Units, the modern iteration of the Metric system. The ERB will likely provide some conversions and values for U.S. Customary [...]

By |2022-07-29T12:16:42-05:00July 29th, 2022|ISEE: Upper Level Math Review|

Announcing Piqosity 2.0

A brand new version of the Piqosity adaptive, e-learning app has just launched! For over seven months our engineering team has been hard at work on updating our hosting architecture, back-end code, user interface, and new features. This update is so substantial that we're basically releasing an all new app—Piqosity 2.0, and it's bringing [...]

By |2022-11-01T10:33:53-05:00July 27th, 2022|Piqosity News|
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