App Shopper: Quadratic Grouping (Education)

App Activity

Feb 01 '11	Version 3.0
Jan 12 '11	Version 2.1
Oct 26 '10	Version 2.0
Dec 17 '09	Version 1.5
Apr 03 '09	Version 1.4
Jan 14 '09	Version 1.3
Nov 17 '08	Version 1.2
Nov 11 '08	Version 1.1
Oct 23 '08	New App: $.99, v1.0

About AppShopper

For more information on Contacting Us, App Submissions, and Advertising, visit our About page

Quadratic Grouping

iOS iPhone

Quadratic Grouping is a powerful learning aid that combines interactive Coaching Calculators and a Guide to help students master factoring of quadratic trinomials and solving of quadratic equations using the Grouping Method also known as the AC method.

You go step by step through example questions,

- Finding the target of the × and of the +
- Finding the signs of the integer pair
- Splitting the x term
- Grouping and factoring
- Completing the factoring

or go straight to a particular step.

The Guide features two styles of grouping. The classic style where we put ( ) around the groups and a quick grouping style that omits this step.

Students learn quickly when they focus on a particular step and investigate what happens when the sign of the x-coefficient switches between positive and negative.

The in depth Guide is ideal for students as the menu design reinforces each problem solving step and examples highlight and simplify algebra that students find hard.

For convenience, the app also has Coaching Calculators covering many quadratic factoring and solving methods :

- factoring by Difference of Squares
- factoring by Guess and Check or Trial and Error method
- factoring by Grid or Box method
- solving by Completing the Square

Quadratic Factoring is a member of the Quadratic Series comprising QuadCoach Factor it Solve it, GuessCheck Factoring, Quadratic Factoring and EasyFactor Quadratics.

All apps have the same series of quadratic Coaching Calculators.

The GuessCheck Factoring Guide looks in depth at factoring by the Guess and Check or Trial and Error method.

The Quadratic Factoring Guide looks in depth at factoring by the Grid or Box method.

The EasyFactor Quadratics Guide looks in depth at factoring by Difference of Squares and Inspection for simple cases.

QuadCoach Factor it Solve it has a mini-Guide and additional Coaching Calculators and mini-Guide covering the solving of a pair of simultaneous linear equations by the addition, elimination and substitution methods.

What's new

Major revision. Now includes Coaching Calculators for factoring by Difference of Squares, Guess and Check and the Box Method. Also solving quadratic equations by Completing the Square.