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From the earliest civilizations to the modern world, geography, religion, trade, and politics have bound peoples and nations together — and torn them apart. Take a journey through time and space and discover the fascinating history behind the complex world we inhabit today Preview

A brief introduction to US history. The United States of America is a nation with a rich history and a noble goal: government of the people, by the people, for the people. Its citizens' struggle to achieve that goal is a dramatic story stretching over hundreds of years. Preview

ELA practice and instruction for 9th grade, covering reading comprehension and vocabulary. Aligned to Common Core State Standards for Reading: Literature; Reading: Informational Text; and Vocabulary Acquisition and Use. Preview

Trusted content. Created by experts, Khan Academy’s library of trusted, standards-aligned practice and lessons covers math K-12 through early college, grammar, science, history, AP®, SAT®, and more. It’s all free for learners and teachers. Preview

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked. Preview

1. Algebra foundations. Overview and history of algebra: Algebra foundations Introduction to variables: Algebra foundations Substitution and evaluating expressions: Algebra foundations.
2. Solving equations & inequalities. Linear equations with variables on both sides: Solving equations & inequalities Linear equations with parentheses: Solving equations & inequalities Analyzing the number of solutions to linear equations: Solving equations & inequalities.
3. Working with units. Rate conversion: Working with units Appropriate units: Working with units Word problems with multiple units: Working with units.
4. Linear equations & graphs. Two-variable linear equations intro: Linear equations & graphs Slope: Linear equations & graphs Horizontal & vertical lines: Linear equations & graphs.
5. Forms of linear equations. Intro to slope-intercept form: Forms of linear equations Graphing slope-intercept equations: Forms of linear equations Writing slope-intercept equations: Forms of linear equations.
6. Systems of equations. Introduction to systems of equations: Systems of equations Solving systems of equations with substitution: Systems of equations Solving systems of equations with elimination: Systems of equations.
7. Inequalities (systems & graphs) Checking solutions of two-variable inequalities: Inequalities (systems & graphs)Graphing two-variable inequalities: Inequalities (systems & graphs)Modeling with linear inequalities: Inequalities (systems & graphs)
8. Functions. Evaluating functions: Functions Inputs and outputs of a function: Functions Functions and equations: Functions Interpreting function notation: Functions Introduction to the domain and range of a function: Functions Determining the domain of a function: Functions.
9. Sequences. Introduction to arithmetic sequences: Sequences Constructing arithmetic sequences: Sequences Introduction to geometric sequences: Sequences. Constructing geometric sequences: Sequences Modeling with sequences: Sequences General sequences: Sequences.
10. Absolute value & piecewise functions. Graphs of absolute value functions: Absolute value & piecewise functions Piecewise functions: Absolute value & piecewise functions. Preview

Khan Academy is a 501(c)(3) nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. Our interactive practice problems, articles, and videos help Preview

Learn third grade math aligned to the Eureka Math/EngageNY curriculum—fractions, area, arithmetic, and so much more. Module 1: Properties of multiplication and division and solving problems with units of 2–5 and 10. : 3rd grade (Eureka Math/EngageNY) Module 2: Place value and problem solving with units of measure. Preview

1. Find courses and resources to help refresh what you learned this year and prepare you to succeed in the compulsory and pre-requisite courses you’ll take in the fall. To get started: 1. select the grade of a course you will take 2. choose a subject that you are enrolled in 3. find the course you are taking 4. access free activities and lessons about the course content Find subjects, courses and key concepts for: 1. Grade 9 2. Grade 10 3. Grade 11 4. Grade 12 Preview

Some of our courses are designed to cover a wide range of grade levels, while others are geared toward a specific grade. If you feel your student is not ready for a particular subject or is too advanced for something that is offered, please refer to our Grade Level Chart to explore all the courses available on SchoolhouseTeachers.com and the grade level designated for each. Preview

1. Number systems. Irrational numbers: Number systems Real numbers and their decimal expansions: Number systems Operations on real numbers: Number systems. Simplifying expressions: Number systems Laws of exponents for real numbers: Number systems.
2. Polynomials. Polynomials in one variable: Polynomials Zeroes of a polynomial: Polynomials Remainder theorem: Polynomials. Factorisation of polynomials: Polynomials Multiplying polynomials: Polynomials Standard identities: Polynomials Algebraic identities: Polynomials.
3. Coordinate geometry. Cartesian system: Coordinate geometry Plotting points on cartesian plane: Coordinate geometry.
4. Linear equations in two variables. Solutions of a linear equation: Linear equations in two variables Graph of a linear equation in two variables: Linear equations in two variables.
5. Lines and angles. Pairs of angles: Lines and angles Parallel lines and a transversal: Lines and angles Lines parallel to the same line: Lines and angles.
6. Triangles. Triangles (review): Triangles Pythagorean theorem: Triangles Criteria for congruence of triangles: Triangles. Proofs: Triangles: Triangles Inequalities in a triangle: Triangles.
8. Areas of parallelograms and triangles. Area of a parallelogram: Areas of parallelograms and triangles Area of a triangle: Areas of parallelograms and triangles.
9. Circles. Circles and its related terms: Circles Angle subtended by a chord/arc of a circle: Circles Perpendicular from the centre to a chord: Circles. Cyclic quadrilaterals: Circles Inscribed shapes problem solving: Circles.
10. Surface areas and volumes. Heron's formula: Surface areas and volumes Cube, cuboid, and cylinder: Surface areas and volumes Cones and spheres: Surface areas and volumes. Preview

She recently began using khan academy 4th grade math, and it's been great. Keep up the great work! craig.collins September 14, 2020 22:00; 1. Comment actions Permalink. I've been teaching HS ela for 23 years. I'm currently piloting your ELA 9 and Grammar curriculum with 185 of my 9th grade students. If there is anything we can do as a test Preview

For students with stronger literacy and motor skills: Khan Academy Kindergarten, 1st grade and 2nd grade math can be appropriate. Ideally a parent or older sibling sits next to them while doing this. One practice that we’ve seen teachers use to great effect is to have all students start on Kindergarten and then move to 1st grade, 2nd grade, etc.This helps ensure that older … Preview

Online ninth grade students will learn core topics like math, science, English, and history in addition to career-focused electives and credit recovery if needed. Where offered, students also have the opportunity to earn college credit while still in high school through dual credit options and Advanced Placement® (AP®) courses.** Preview

Khan Academy Free Online Courses, Lessons & Practice Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere. Visit site: www.khanacademy.org Preview

Khan Academy has a library of standards-aligned lessons covering kindergarten through early college math, grammar, science, history, AP® courses, SAT® preparation, and more. Students can practice skills with exercises, quizzes, and mastery challenges and get immediate feedback and support. Khan Academy is available in more than 40 languages.

## New Online Courses

### Is Khan Academy free for teachers??

Created by experts, Khan Academy’s library of trusted, standards-aligned practice and lessons covers math K-12 through early college, grammar, science, history, AP®, SAT®, and more. It’s all free for learners and teachers.

### What do you learn in 9th grade history??

9th Grade Unit Studies in History, Geography, and Social Studies Heroes: Saving Jewish Lives from the Nazis Interdependence of the States Magna Charta Unlocked Miracle of America

### How do I set up a grade level math program in Khan Academy??

It is easy to set up a grade level math program in Khan Academy. There is so much more than math available though! To use Khan Academy for homeschool as a complete course the student just needs to log in and begin at the first lesson. Every study area is different, but there is always a recommended progression.

### What kind of lessons are in Khan Academy??

Khan Academy has a library of standards-aligned lessons covering kindergarten through early college math, grammar, science, history, AP® courses, SAT® preparation, and more. Students can practice skills with exercises, quizzes, and mastery challenges and get immediate feedback and support. Khan Academy is available in more than 40 languages .