This is an awesome site for learning. You can learn or use it to help teach others. Homeschooling aid. Help the kids learn more and it is all free. Khan Academy is really available to help pretty much anyone learn or help you help the kids or someone else to learn. According to the site “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. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We’ve also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.” There is something for most everyone. Check out the list of available subjects.
Math
Math
K–8th grade
K–2nd
3rd
4th
5th
6th
7th
8th
Foundations
Early math
Arithmetic
Pre-algebra
Basic geometry
High school and beyond
Algebra basics
Differential calculus
Algebra I
Integral calculus
Geometry
Multivariable calculus
Algebra II
Differential equations
Trigonometry
Linear algebra
Probability and statistics
Recreational math
Precalculus
Math contests
Science
Economics and finance
Arts and humanities
Computing
Test prep
Partner content
College admissions
Talks and interviews
Coach resources
Click here to see more>>> https://www.khanacademy.org/
