Topic
Activities about bases
Hexadecimal coloring
Probably most of us have heard of and even used hexadecimal color codes. Don't you wonder why their number descriptions really make sense? In this activity we first...
Number Sense
Geometry
Grades 5–HS
Really old
Tom Lehrer is a singer, songwriter, satirist, pianist and mathematician who has written some wonderful songs. In 1959 he wrote a song called “New Math”. At that time,...
Number Sense
Math and Social Studies
Grades 6–HS