The Upper Level Independent School Entrance Exam (ISEE) is the standardized test required by many private schools for students applying to grades 9-12. The ISEE is administered by the Educational Records Bureau (ERB). Piqosity currently offers 6 full-length practice tests plus 2,000 practice questions. In total, students can work through the equivalent of nearly [...]
Amazon's newly launched Fire HD 8" tablet has the potential to usher in a new era of affordable, personalized learning in the K12 classroom. When we started building the education technology startup that is now Piqosity, we had big dreams. Our vision was and remains to enable any child with a $50 tablet and [...]
We've rolled out a massive update today to improve the student experience on Piqosity. At the centerpiece of the update is a simpler student dashboard, which highlights the four primary ways to work practice ISEE, ACT, and SAT problems - adaptive practice, assignments, full-length tests, and previously worked questions. Ways to Practice ISEE, ACT, [...]
A circle is a perfectly round geometric shape which you will see again and again in your studies of math concepts. You will need to have an understanding of its diameter, radius, circumference, area, arcs, and sectors. You will also work with objects that are tangent to a circle and what that means. Diameter [...]
A collection of numbers (called entries) contained within a pair of [ ] brackets is called a matrix. A matrix is labeled by a variable, which is usually a capitalized letter. In a sense, matrices are like sets of data, except that a matrix is made up of rows and columns of data as [...]
A transformation simply refers to moving the graph of a function around: If you want to move the line graph of y = 2x + 1 to the left or right, you increase or decrease the input. If you want to move the line graph of y = 2x + 1 up or down, [...]
The set of all possible inputs for a function is called the domain, and the inputs fall on the x‐axis in a graph. The set of all possible outputs for a function is called the range, and the outputs fall on the y‐axis in a graph. If the domain has an input that is [...]
With so many formulas and equations to know and use, computations can become confusing when you must use several formulas and/or equations for the same problem. Function notation was developed to help differentiate between distinct equations and formulas, which are all considered functions. A function is a correspondence, or relation, between two sets of [...]
Quadratic equations function in the same manner as linear equations in that you have a particular input resulting in a particular output. You plot points on the graph in the same manner as you do linear equations. The difference is that the graph of a quadratic forms a curved line, called a parabola, instead [...]
The line graphs generated by linear equations are not limited to the portion of the graph shown, but instead continue on infinitely in either direction. Essentially, you are working with a segment of the line graph and a few of the points it contains. We can further analyze the measurements of these line segments [...]
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