Enrichment at Home

Coding

Alcumus, Art of Problem Solving's Innovative Online Learning System

Khan Academy, videos that teach.  Classes available from digital animation to calculus

NASA

National Geographic for kids

The Kids Should See This, smart videos for curious minds of all ages

Logic Puzzles 

Variety of Online Puzzles 

Math Puzzles and More

Math games from NCTM (National Teachers of Mathematics) I have kids use the Guest Pass, they play against the computer.  If parents allow, join and students can play against other students. 

Sudoku