Math Review of Order of Operations

Overview Order of operations within math problems gives students a set of rules to follow in order to get the same answer. In the standard order of operations, expressions within parentheses are worked first, then exponents, then multiplication, division, addition, and subtraction. Conventional Order Suppose the problem is as simple as 85 +9 X 2. […]

Science Review of Volcanoes

Overview Volcanoes on Earth are usually caused when hot lava, volcanic ash, and gases escape from chambers below the crust. Although many volcanic mountains have cones with craters, other types of volcanoes exist. Volcanic activity occurs on land, under the sea, and elsewhere in the Solar System and beyond. Formation of Magma Temperatures are hot […]

Science Review of Earthquakes

Overview Earthquakes are caused when energy is suddenly released in the earth’s crust, so that it shakes and trembles. Most are mild, but some are violent, resulting in massive devastation, injury, and loss of life, such as the recent earthquakes in Nepal in April and May, 2015 Why Earthquakes? The tectonic plates that make up […]

English Review of Outlining the Essay

  Overview Writing an outline is an important step to ensure structure in a finished essay. Some writers choose to form a firm thesis statement before they write the first draft, and then write a draft outline. Others choose to write a rough thesis statement, write a very rough draft of the essay, and then […]

English Review of Prewriting the Essay

Overview Sometimes, the most difficult part of writing an essay is getting past the first few sentences or even the first few words. The blank page or the blinking cursor on the blank computer screen mocks the writer who doesn’t know what to write. There is hope, with some strategies for prewriting the essay to […]

Math Review of Operations with Real Numbers

Overview Operations with real numbers are the most familiar types in mathematics. Those numerical expressions with constants and operations include such actions as addition, subtraction, multiplication, and division.   Many algebraic expressions are usually operations with real numbers. Real Numbers The set of real numbers include the entire set of rational numbers, such as positive and […]

Math Review of Variables and Expressions

Overview The language of algebra is written in symbols, numerals, variables, constants, and expressions. In order to be successful in math, students should be able to translate its language into words and words into math language. Numerals and many symbols should already be familiar, as well as many operations with real numbers. Common Symbols and […]

Science Review: The Search for Extrasolar Planets

Overview Astronomers have observed planets orbiting other stars in the Milky Way galaxy and in other galaxies. Some of these objects are below the mass of Earth, while others are larger than the planet Jupiter. Over 1900 extrasolar planets are registered, many found by telescopes in space, such as the Kepler Space Mission. Definition of a […]

Science Review of Planetary Magnetospheres

Overview The magnetosphere around a planet is the area of space where charged particles are controlled by its magnetic field. In the Solar System, Jupiter and Earth have the strongest magnetospheres because of the strength of well-developed magnetic fields. Close to the surface of a planet, the lines of force of the magnetic field look […]

Science Review: More about the Sun

Overview More is known about the Sun than any other star, because the details of its structure, its features, and its effects can be observed at relatively close range. The magnetic field of the Sun leads to changes in solar activity, such as the number and timing of sunspots and solar flares. Telescopic observations and solar […]