[DamonHD]

My (smart) 8 year old is not interested in daddy's boring programming stuff AFAIK, but has latched onto binary and I make him and his older sister convert chapter numbers between binary, octal, decimal and hexadecimal (and Roman numerals) when I'm reading to them at night.

Don't necessarily force everything on him at once, but fragments might stick.

My dad got me hooked on (ultimately) electronics with one simple circuit maybe age 6 (maybe younger) that broke my expectations of what 'boring' batteries and lights and switches would do.