Problem-Solving and Logic Puzzles and Games
Kakooma Addition and Multiplication Puzzles
gregtangmath.com/kakooma
gregtangmath.com/kakooma
Roman Numerals Information and Games
Information: www.roman-numerals.org/numbers.html
Games: www.roman-numerals.org/games.html
Information: www.roman-numerals.org/numbers.html
Games: www.roman-numerals.org/games.html
Puzzles
Math Pickle - mathpickle.com/organized-by-grade/