King of Math is a great fast-paced game for improving skills in mental mathematics. The free version includes questions in addition and subtraction and a mixed of both. The full version ($0.99) on the other hand, includes questions on Multiplication, Division, Geometry, Fractions, Powers, Statistics and Equations.
In King of Math, the player starts as a farmer and improves as the level goes up; for example, after level 1, he becomes a merchant. The score of the player depends on how fast he can answer the questions at each level. The slower the answer, the smaller the score.
What I like about King of Math is the variety of exercises available. For instance, in subtraction, it does not just ask for the difference; it also asks for the minuend or subtrahend. This will make the player thinking under time pressure.
MathGraph is an awesome iPad app for exploring graphs. It can be used to investigate the relationship between equations of functions and their graphs. For example, in the equation of the form , students would be able to discover that determines the appearance and steepness of the graph, while is where the graph crosses the y-axis.
MathGraph includes a variety of graphs to explore: line, circle, ellipse, parabola, hyperbola, polynomial, absolute value, exponential, logarithmic (base 10), and logarithmic (base e). » Read more
Math Terms is an iPad App that contains about a thousand entries of middle school and high school mathematical concepts. It is a simple glossary with illustrations that can help students understand mathematical terms and concepts better. I have explored several glossary apps and what separates Math Terms are its practical examples, colorful illustrations, and its intuitive explanations. The image below taken from Math Terms explains Addition Property of Equality.Math Terms was created by Andy Felong.