Math Video: Perimeter & Area|教育線上App不用買-HotApp4Game

This math video app provides a quick and simple way for you to learn and understand the basics for perimeter and area. All of the 15 computer animated videos are stored in your device. So, no internet connection is required to play. These math videos are: Perimeter of a square (2 videos), Perimeter of a rectangle (2 videos), Perimeter of a triangle (2 videos), Perimeter of a parallelogram, Circumference of a circle (2 videos), Area of a square, Area of a rectangle, Area of a circle, Area of a parallelogram, Area of a triangle and Area of a trapezoid...Each of these videos is divided into several different parts that you can easily skipped to. More details below: Perimeter of a square 1•Introduction •A square with each side (edge) of length L •Deriving the formula for the perimeter of a square•The perimeter of a square, P=4L •Do not forget about the unit for the perimeterPerimeter of a square 2 •Introduction •Eg 1: Calculate the perimeter of a square •Eg 1: Unit for the perimeter after calculating it •Eg 2: Calculate the length of each side given the perimeter •Eg 2: Unit for the length of each side after calculating it Perimeter of a rectangle 1 •Introduction •A rectangle with the length L and width W •Deriving the formula for the perimeter of a rectangle •The perimeter of a rectangle, P=2(L+W) •Do not forget about the unit for the perimeter Perimeter of a rectangle 2 •Introduction •Eg 1: Find the perimeter of a rectangle •Eg 1: Unit for the perimeter after calculating it •Eg 2: Find the length of a rectangle given the information •Eg 2: Unit for the length of the rectangle Perimeter of a triangle 1 •Introduction •A triangle with the side lengths of a, b and c •Deriving the formula for the perimeter of a triangle •The perimeter of a triangle, P=a+b+c •Do not forget about the unit for the perimeter Perimeter of a triangle 2 •Introduction •Eg 1: Find the perimeter of a triangle •Eg 1: Unit for the perimeter after calculating it•Eg 2: Find the length of one side of the triangle •Eg 2: Unit for the length of the triangle Perimeter of a parallelogram •Introduction •Eg 1: Find the perimeter of a parallelogram •Eg 1: Unit for the perimeter after calculating it •Eg 2: Find the length of one side of a parallelogram •Eg 2: Unit for the length of the parallelogram Circumference of a circle 1 •Introduction •A circle with the radius of r •The formula for the circumference of a circle with radius, r •Deriving the formula when for a circle with diameter, d •The two formulas for the circumference of a circle Circumference of a circle 2 •Introduction •Eg 1: Find the circumference of a circle given the radius •Eg 1: Unit for the circumference after calculating it •Eg 2: Find the diameter of a circle •Eg 2: Unit for the diameter after calculating it Area of a square •Introduction •A square with each side (edge) of length, L •Deriving the formula for the area of a square •Eg 1: Calculate the area of a square •Eg 2: Calculate the length of each side given the area Area of a rectangle •Introduction •A rectangle with the length L and width W •Deriving the formula for the area of a rectangle •Eg 1: Calculate the area of a rectangle •Eg 2: Calculate the width of the rectangle Area of a circle •A circle with the radius of r •The formula for the area of a circle •Eg 1: Calculate the area of a circle •Eg 1: Unit for the area after calculating it •Eg 2: Find the radius of a circle given its area More videos: Area of a parallelogram & Area of a triangle & Area of a trapezoid