What should 8th graders know in math

During these activities, the tutors observe Grade 8 students picking up on Relation and Functions, Analyzing and Sketching Graphs, and so many more things. Cuemath tutors observe the performance of your kid and create a personalized learning plan instead of robotic completion of courses. What are you waiting for? Help your Grade 8 kid fall in love with Math instead of dreading the subject.

Tutor him online with Cuemath. Cuemath is enabling kids to create with code! Click here to know about kids coding and how coding promotes logical and computational thinking in kids. Math Curriculum. Grade 8 Maths. By Grade 8 children are well versed with a bunch of topics. Higher-order concepts like rational numbers, irrational numbers, exponents are all introduced in Grade 8.

Children in Grade 8 are expected to practice these concepts and get a hold over them. Concepts learnt in Grade 8 go a long way in higher grade concepts.

Basics of Exponents. Laws of Exponents. Negative Exponents. Scientific Notation. Operations on Numbers Expressed in Standard Form. Lines, Angles, and Triangles. Congruent Figures. Similar Figures. Linear Equations in One Variable.

Solving Equations Reducible to the Linear Form. Server Issue: Please try again later. Sorry for the inconvenience. Your 8th grader and math under Common Core Standards Linear equations and more equations — 8th grade is chock-full of algebra. By the end of eighth grade, your child will be close to mastering these skills: Understanding irrational numbers and comparing them to rational numbers.

Using linear equations, linear functions and systems of linear equations to explain relationships between two variables or values.

Creating graphs and other diagrams to illustrate those relationships. Understanding the concept of a function as one quantity or value changing another quantity or value.

Computing square roots and their opposite, exponents. Determining if shapes are identical by rotating them, flipping them, and moving them around on a graph. Applying the Pythagorean Theorem to find unknown lengths in right triangles and explaining why it works.

Find the volume of three-dimensional shapes, including cones, spheres, and cylinders. Illustrating relationships between two sets of data on charts and explaining the patterns. That is so irrational Rational numbers include positive or negative whole numbers, simple fractions and decimals including those that have repeating patterns like. Expressions and equations A big part of eighth grade math focuses on linear equations, linear functions, and systems of linear equations, which are used to show the relationship between two variables.

Share on Pinterest. Get the GreatSchools newsletter — our best articles, worksheets and more delivered weekly. Sign up. How to teach your preschooler shapes and spatial skills Preschooler math — teach them shapes and spatial skills. Why early math is just as important as early reading Could early math skills matter more than early reading skills? Studying similarity, students observe how ratios between similar triangles stay the same, which sets them up for understanding slope in Unit 5.

Students also make informal arguments, which prepares them for more formal proofs in high school geometry. Unit 4, Functions , introduces students to the concept of a function, which relates inputs and outputs. Students analyze and compare functions, developing appropriate vocabulary to use to describe these relationships. They investigate real-world examples of functions that are both linear and nonlinear, and use functions to model relationships between quantities.

This introductory study of functions prepares students for Unit 5, in which they focus on a particular kind of function—linear equations. Students make the connection between proportional relationships, functions, and linear equations. They deepen their understanding of slope, making the connection back to similar triangles in Unit 3.

Students think critically about relationships between two quantities: how they are represented, how they compare to other relationships, and what happens when you consider more than one linear equation at a time.

Throughout these two units, students utilize their skills from Unit 2 as they manipulate algebraic equations and expressions with precision. In Unit 7, Pythagorean Theorem and Volume Applications , students discover the Pythagorean Theorem, which is supported by a study of irrational numbers.

Students now have a full picture of the real number system. Lastly, in Unit 8, Bivariate Data , students analyze data in two variables using linear equations and two-way tables. They use these structures to make sense of the data and to make justifiable predictions. Students learn to simplify complex-looking exponential expressions, and they learn efficient ways to describe, communicate, and operate with very large and very small numbers. Students hone their skills of solving multi-step equations and inequalities, redefining their definition of "solution" to include cases such as infinite solutions, and interpreting solutions in context.

Students investigate congruence and similarity by studying transformations of figures in the coordinate plane, and apply these transformations to discover new angle relationships.

Students learn how to represent, interpret, and analyze functions in various forms, leading to understanding features such as rates of change, initial values, and intervals of increase and decrease. Students compare proportional relationships, define and identify slope from various representations, graph linear equations in the coordinate plane, and write equations for linear relationships.