For every student,
every classroom.
Real results.

Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom.

Your Progress
Algebra I72%
Biology45%
US History88%
Grammar31%
Last active today · 1,240 energy points

Browse by subject

Math
Science
Reading & Language Arts
History & Social Studies
Computing
Arts & Humanities
Economics & Finance
Life Skills
Algebra I & II
Chemistry
Grammar
World History
AP Computer Science
Art History
Calculus
Physics
Welcome back! 👋
Pick up where you left off, or explore something new.
🔥
14 day streak!
Keep it up — practice every day to grow your streak
M
T
W
T
F
S
S
1,240
Energy Points
▲ +85 this week
47
Skills Mastered
▲ +3 this week
12
Videos Watched
▲ +2 today
89%
Avg. Quiz Score
▲ +4% vs last week
Continue learning
➕
Algebra I
Grade 8–9 · 234 skills
🔬
Biology
Grade 9–10 · 180 skills
🗺️
US History
Grade 10–11 · 142 skills
✏️
Grammar
All grades · 95 skills
💻
Intro to CS
Grade 6–8 · 110 skills
🎨
Art History
All grades · 88 skills
Algebra I — Skill Mastery Map
View all →
Up next in Algebra I
▶️
Introduction to quadratic equations
Video · Unit 7: Quadratics
8 min +50 pts
✏️
Solving quadratics by factoring
Exercise · Unit 7: Quadratics
15 min +100 pts
📄
The quadratic formula explained
Article · Unit 7: Quadratics
5 min +20 pts
❓
Unit 6 quiz: Linear equations
Quiz · 10 questions
20 min +150 pts ✓
▶️
Graphing parabolas in vertex form
Video · Unit 7: Quadratics
11 min +50 pts
🧠 Quick check — Solve: 2x² − 8 = 0
x = ±2
x = ±2 ✓
x = 4
x = ±4