Salman Khan was a student at MIT and wanted to help his cousin Nadia do well in math. He started creating some short, online lectures for her. He became her tutor over the Internet. Soon, he realized he could share these lessons with anyone in the world on YouTube. In 2006, he started the Khan Academy to provide good educational support for anyone, anywhere, for free.
Khan started by teaching about mathematics, but soon added other subjects, especially sciences. You can visit the Khan Academy Channel on YouTube or the Academy homepage and look around for something you like. Or, look at some of the suggestions below.
Watch Sal Khan talk about his project
This is a TED Talk from March 2011. Khan introduces his education project. Watch with Japanese subtitles, or change to English. He is a very positive and engaging teacher.
How to use the Khan Academy
Review something you already know well
Watch and listen to a lecture about something from high school mathematics, like basic geometry. You know the ideas, so listen and watch how Khan explains the topic. Watch a few times and try shadowing [Japanese] what he says. If you know the ideas, you can pay attention to the English.
Try something new
This is much more challenging. Look for a topic you are studying in chemistry or physics class. You are already thinking about it. Maybe Khan explanation will help you. Studying a topic you are interested in can help you learn about science or math and English at the same time.
Look for subtitles
Some of Khan's talks have subtitles so you can read and listen at the same time. This will really help you at first. But, all the lessons have drawings and notes on his Internet "blackboard" to help you understand.
States of Matter: Short lecture about solids, liquids, and gasses
The Candy Machine: Geometry problem-finding the area of a circle. Listen to numbers and math vocabulary like: variable, exactly, precision, figure out, and diameter.
