https://www.youtube.com/watch?time_continue=226&v=SjSHVDfXHQ4

10 great numbers you should know.

Fibonacci in nature- excellent video

Measurements - metric system, weight, density volume length

http://www.chemtutor.com/unit.htm

Better Explained (good math site-http://betterexplained.com/archives/

http://betterexplained.com/calculus/lesson-1

free maths

http://www.adaptedmind.com/p.php?tagId=802

Free program

http://www.quia.com/rr/86966.html

shared program

http://www.quia.com/shared/

Mental Math

http://www.tjleone.com/mentalmath.htm

Algebra fundamentals - Balance- good

Excellent algebra with answers

Algebra good explanation- basics

worksheets good (Addition multi etc)

math patterns -shape size, color, numbers

Good about complex numbers (physics for idiots)

Good math problems and puzzles

**Lego maths**

1. Learning with legos - maths-1