Grade 8 Math & Science app for iPhone and iPad

Grade-8-Math-Science is a comprehensive quiz app for Grade 8.
Features:
-ScoreBoard to record scores.
-Each Topic Score can be deleted to reset the topic quiz
-User progress indicated in pie graph.
-Grade 8 Math topics--------
. Square and Square roots
. Cube and Cube roots
. Number System
. Percent
. Fractions
. Ratio and Proportions
. Perimeter and area
. Profit loss and discount
. Factorisation
. Polygon and Quadrilateral
. Parallel Lines
. Identities
. Variation and proportion
. Squares and Square Roots
. Irrational and Real Numbers
. Circle
. Area
. Quadrilaterals
. Circumference
. Statistics
. Equation in one variable
. Factors of polynomial
. Polynomials
. Division of polynomials
. Volume and surface area
. Construction of quadrilaterals
. Indices
. Cubes and cube roots
. Arc of circle
. Compound interest
. Discount and commission
-Grade 8 Science topics--------
. Coal and Petroleum
. Cell
. Crops
. Combustion and Flames
. Synthetic Fibers and Plastics
. Stars and Solar system
. Light
. Force and Pressure
. Sound
. Microorganisms
. Materials
. Force and Pressure
. Friction
. Chemical effects of electric current
. Some natural phenomena
. Biodiversity
. Animal husbandry
. Structure of atom
. Sources of energy
. Magnetism
. Electric current
. Chemical reactions