This Linear equation app is one of a series of apps branded “XR Math” available on the iTunes developed by Allen Robinson. It sets out to provide practise with linear equations from a basic level to very difficult as a 25 step differentiated process. The EAS has certified this app with 4 stars.
The app is basic in its layout and although the graphics are simplistic it does make the app very clear to use without too much supervision. The app starts with an on screen tutorial on how to best use the app and its interfaces. We believe that this is essential otherwise at first glance the app looks complicated. The instructions can be returned to at any stage.
The app also introduces the importance of checking answers, a valuable lesson for all Maths students especially when in exams. Once again this can be returned to at any stage.
Each set of questions increase with difficulty. There is an Example button that shows the user how the question should be answered with clear explanations. The question allows you to input an answer with instant feedback from the app. If the answer is correct the user is rewarded and the score logged for that section. If the user fails to answer the question then there is a reminder of how the question should be approached and you can try again. We did spot a typo mistake here for the word ‘Sellect’.
We love the instant feedback of the questions and in the early levels it’s easy to follow. However I do feel that as the questions get harder it would benefit the user if only the next step of the equation was revealed rather than the whole solution. We found that because we could not get started with the equation we were forever referring to the example again and again. We found that we answered the harder questions on paper to work out the equations; it would be great to be able to do this on the device and receive feedback at each stage with links to the next.
The progression of the equations is sound and enables the student to gain confidence as they work through. The app would benefit from some sound and although the graphics are lacking it does look quite serious and professional.
Overall this app delivers the difficult topic of Linear Equations well. This app certainly compliments the other apps in the series and used in conjunction will result in a sound understanding of Mathematical topics that most students struggle to understand. These apps in the XR Maths series can be seen at the bottom of the menu.
From the Developer
Every XrMath App provides a virtually limitless supply of questions to let students DO math.
Intended for classroom use but also suitable for individual work.
Questions can be repeated as often as needed - the numbers are random.
The list of questions is color coded to show the degree of difficulty. The question difficulties range over several grades.
Those students that need to can start with easier questions.
Those who finish quickly can move on to more challenging ones.
The teacher and student chose where to work. They can go back or skip forward, at any time, to get questions that are appropriate.
There are tutorial screens - intended for revision.
Every question has a Example screen showing a worked example, but with different numbers.
When an answer is incorrect, whenever possible a response is given to help the student.
The question selection list is updated to show how many times each question has been correct answered, so both teacher and student can monitor progress.
The App generates the question and marks the answer, leaving the teacher free to work one-to-one with individuals or groups of students.
In this app the questions are carefully graded from easy up to difficult in 25 steps.
Solve x + 9 = 12 or 10x - 9 = 2
7 - x = 4(6x - 9) or x/8 + 2 - 9
up to :
(x - 10)/2 + (4x + 7)/4 = 5 or 7/(x + 11) + 12/(x - 8) = 0