Ages 13 to 14

8th grade math: what your child learns, and how to help

8th grade math is mostly about linear equations, functions, and the Pythagorean theorem. Here is what that means, where children often get stuck, and simple ways to help at home.

What your child learns in 8th grade

Linear equations

Solve linear equations with variables on both sides, and systems of two equations.

Functions and slope

Understand functions, find slope and rate of change, and compare functions in tables, graphs and equations.

Exponents and roots

Use integer exponents and scientific notation; know square and cube roots and irrational numbers.

Geometry

Understand transformations, congruence and similarity; use the Pythagorean theorem; find volume of cylinders, cones and spheres.

Data

Make and read scatter plots and lines of best fit.

Based on the Common Core State Standards for Mathematics. Your state or school may order topics differently.

Where children often get stuck

Slope as rise over run
Distributing a negative sign
When the Pythagorean theorem applies

How to help at home

Graph something real, like savings over weeks.
Ask your child to check an answer by substituting it back.
Encourage sketching before solving geometry problems.

How Kidscient helps with 8th grade math

It starts from your child's level, not their grade. A short, friendly check finds what your child can already do. Many children are ahead in some topics and behind in others.
Homework help without answers. Your child snaps tonight's math homework and Curio helps with each problem by asking and hinting. Your child writes every answer. Code checks the arithmetic.
Guided lessons on a whiteboard. Curio explains each step out loud while drawing it, then asks your child to try. Lessons open level by level; at the founding beta they start around the grade 4 level.
Voice-first. Your child talks through their thinking, which is where the learning happens.

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Parents also ask

What math is taught in 8th grade?

In most US schools, 8th grade math focuses on linear equations, functions, and the Pythagorean theorem. These topics follow the Common Core State Standards, which most states use or adapted.

How can I help my 8th grader with math at home?

Graph something real, like savings over weeks. Ask your child to check an answer by substituting it back. Encourage sketching before solving geometry problems.

My child finds 8th grade math too easy. What should we do?

Work on the next level rather than more of the same. Kidscient places children by what they can do, so a child who is ahead moves ahead.

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