Math Review of Binary Systems

Overview Numbers in Base 2 are real numbers that can be involved in mathematical operations in the same way as more familiar decimal or Base 10 numbers. The advantage of binary systems — that they contain two numerals 0 and 1 — means that they can be used in situations that have two alternatives. Introduction […]

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 […]

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 […]

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 […]

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 […]