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Draw and compare fractions, and convert to decimals

How to tell when fractions are equal or which is bigger

Understanding compound fractions and their tricky mathematical behavior.

In this video lesson Mr. Donnelly will explain and demonstrate how to find the perimeter of a polygon.

In this video lesson, Mr. Donnelly will be explaining area of polygona. This lesson is aligned to the Common Core mathematics for third grade.

A circle is a simple shape of Euclidean geometry that is the set of all points in a plane that are at a given distance from a given point, the centre. The distance between any of the points and the centre is called the radius. It can also be defined as the locus of a point equidistant from a fixed point. A circle is a simple closed curve which divides the plane into two regions: an interior and an exterior. In everyday use, the term "circle" may be used interchangeably to refer to either the boundary of the figure, or to the whole figure including its interior; in strict technical usage, the circle is the former and the latter is called a disk.

A closed plane figure bounded by three or more straight sides that meet in pairs in the same number of vertices, and do not intersect other than at these vertices.

In this video lesson Mr. Donnelly will be explaining how to find the unknown side length of a polygon by using the given perimeter.

A line segment is a straight line which links two points without extending beyond them while a ray has one point, one arrow and can go on infinitely.