Curated OER
Strategic Games Y1: Nim
First graders play Nim online to practice problem solving skills and strategies.
Curated OER
Nim: A Game Played All Over the World
Students participate in a European subtraction game. In this subtraction lesson, students use pebbles to demonstrate different subtraction strategies. The students use a deduction strategy to be the first one left with no pebbles.
Cut the Knot
Cut the Knot!: Interactive Mathematics: Geometry Articles, Theorems, Problems
Contains over five hundred Geometry articles, problems, puzzles, and games. Some sites relating to circles are provided within this list.
Other
Ministerio De Educacion: Nim
Use different strategies to play this interactive game. You need two players for this game.