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Article Summary: "Eighth grade begins with reviews from following years such as problem solving, reasoning, and estimates. They will also use problem-solving strategies such as reading the problem, drawing a picture or diagram, using trial and error, making a table or chart, looking for patterns, making a simple problem then generalizing, working backwards, etc."

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What Math Concepts are taught in Eighth Grade?

Eighth grade begins with reviews from following years such as problem solving, reasoning, and estimates. They will also use problem-solving strategies such as reading the problem, drawing a picture or diagram, using trial and error, making a table or chart, looking for patterns, making a simple problem then generalizing, working backwards, etc. Eighth graders should also know which tools are appropriate for various calculating, meaning would they figure it out mentally, perhaps use a calculator or a pencil and paper? Often they might opt to perform an operation on the computer. Eighth graders will be able to use appropriate estimation strategies such as breaking numbers apart, compatible numbers, guess and check, clustering, rounding, and compensation.

Eighth grade children are taught by using a combination of interactive activities, learning games, printable worksheets, assessments, and reinforcement. Manipulative are very important for eighth grade math lessons. The significance of eighth grade math is taught by using many tools and using the major math strands for eighth grade curriculum which are number sense and operations, algebra, geometry and spatial sense, measurement, and data analysis and probability. These are all critical lessons for an eighth grade math curriculum.

Eighth grade math students build on what they learned in kindergarten through seventh grade math. In eighth grade math they work with positive and negative numbers, exponents, and the order of operations, as well as scientific and standard notation. They learn more about working with whole numbers, fractions, mixed numbers, decimals, and integers. There are more in depth lessons in measurement, geometry, algebra, data analysis and probability. Eighth grade will prove to be a very challenging year for most students because they will be taught many new and difficult concepts. Eighth grade will teach student's word names and standard numerals for integers, fractions, decimals, numbers expressed as percents, numbers with exponents, numbers expressed in scientific notation, absolute value, radicals, and ratios. Students will compare and order fractions, decimals, integers, and radicals using graphic models, number lines, symbols, numbers expressed in absolute value, scientific notation, integers, percents, and numbers with exponents, fractions, decimals, radicals, and ratios. Students will be expected to know relationships among fractions, decimals, and percents given a real-world context.

The binary (base two) number system is an important part of the eighth grade math curriculum. Students learn how the base two systems are used by computer technology. Eighth grade math lessons teach how non-base ten numbers can be expressed as equivalent numbers in base ten. Eighth grade math students evaluate numerical and algebraic expression containing exponential notation and express base ten numbers as equivalent numbers in different bases, such as base two, base five, and base eight. By eighth grade, students will need to know the four basic math operations on whole numbers, fractions, mixed numbers, decimals, and integers. They must also understand the difference and the relationship between positive and negative numbers including commutative, associative, distributive, identity, equality, inverse, and closure properties. Eighth grade math lessons will present students with real-world problems in which they must choose appropriate operations using integers, ratios, rates, proportions, numbers expressed as percents, decimals, and fractions in two- or three-step problems. They will learn to solve problems with percents greater than 100%.

Eighth grade students will learn about scales, including those based on number lines, graphs, models, and maps. Students will construct and use scale drawings to recreate situations. They will find measures of length, weight or mass, and capacity or volume using proportional relationships and properties of similar geometric figures. Students, by the end of the year will be able to determine the greatest possible error of a given measurement and the possible actual measurements of an object.