Here we have 2 triangles, with the small one inside the large one. Can you move 3 matchsticks to have 4 triangles?
Can you move 3 matchsticks to have 4 triangles?
Here is a hexagon using 6 matchsticks. Move 4 matchsticks to create 2 triangles.
Can you move 4 matchsticks to have 6 equilateral triangles?
Can you move 3 matchsticks to create 3 regions and separate the coins into 10, 30 and 50 cents?