Free Homework Help

Our education staff publish regular articles, tips and tutorials to help students with their homework
Back to School Review of Space Figures 150 150 Deborah

Back to School Review of Space Figures

Overview Space figures exist in three dimensions. Some examples include spheres, cubes, tetrahedra, polyhedra, cylinders, cones, and other types of solids. Space Figures Add Depth Plane figures such as polygons and curved figures are two-dimensional and flat. They have length and width. Space figures exist in three dimensions, adding depth. A sphere has a center…

read more
Back to School Review of Plane Figures 150 150 Deborah

Back to School Review of Plane Figures

Overview Plane figures in geometry include points, segments, lines, rays, and angles, polygons, curves, and circles. They appear on a flat plane. Points, Segments, Lines, Rays, and Angles Think of a pencil point, and make it smaller, until it is a no-dimensional, undefined, geometric concept that only exists in the minds of mathematicians.  Segments are…

read more
More Math Concepts for Division 150 150 Deborah

More Math Concepts for Division

Overview If division were limited to single-digit divisors and math facts, it would be comparatively easy. Long division is more difficult to visualize and tie to real-world manipulative objects. Paradigms exist for long division, and there are tips and tricks for dealing with other problems. Divisibility Sometimes it is easier to tell if a dividend…

read more
Back to School Review of Division 150 150 Deborah

Back to School Review of Division

Overview Division is the inverse of multiplication. If a times b equals c, and b is not equal to zero, then c divided by b equals a. Also, for any real number a not equal to zero, a times 1/a equals 1. Division Division is one of the four basic arithmetic operations. It is usually…

read more
Math Review of Graphing Parallel and Perpendicular Lines 150 150 Deborah

Math Review of Graphing Parallel and Perpendicular Lines

Overview If two linear equations are solved, and their solution is graphed on a Cartesian coordinate plane, there are three possibilities. The lines may be the same, with all solutions in common. They may never intersect, with no solutions in common. They may intersect at only one point, with one solution in common. Review of…

read more
Math Review of Operations with Sets 150 150 Deborah

Math Review of Operations with Sets

Overview Operations with sets include the union of sets, the intersection of sets, and complements of sets. These operations can be applied to solve survey problems using sets. Special Types of Sets Some special types of sets include the null or empty set, the universal set, and proper and improper subsets. The null or empty…

read more
Math Review of Multiplication of Matrices 150 150 Deborah

Math Review of Multiplication of Matrices

Overview: The dimensions of a matrix are important to its definition.  In order for the multiplication of two matrices to be meaningful, each matrix must have certain dimensions.  Multiplication of matrices is not commutative. Review of Scalar Multiplication In order to multiply a matrix by a constant, every member of the matrix is multiplied by…

read more
Math Introduction to Sets and Logic 150 150 Deborah

Math Introduction to Sets and Logic

Overview Thinking about sets of objects and numbers is as simple as counting and as complex as infinity and transfinite numbers. Sets are an essential underlying concept of mathematics and logic. Roster or Description Mathematicians use the language of set theory to describe sets. For example, small, finite sets can be defined using the roster…

read more
Math Review of Infinity 150 150 Deborah

Math Review of Infinity

Overview Infinity in math means endlessness, limitlessness, and unboundedness. Different levels and symbols exist, which depend on how it is defined. There are many applications in science for the endlessly fascinating concept of infinity. Endlessness This is the most familiar concept of infinity. The number line is endless in both directions, stretching from its origin…

read more
Math Review of Solving Systems of Equations Using Elimination 150 150 Deborah

Math Review of Solving Systems of Equations Using Elimination

Overview One of the methods for solving systems of equations with two variables adds the equations together and then eliminates one variable. It is a useful strategy when solving by substitution would be too cumbersome. Adding Systems of Equations Entire systems of equations can be added just as easily as adding polynomials. Suppose one equation…

read more

Enter your
text here