Investigations
Materials:
- ten of the same circular objects (e.g., counters, coins, trace a coin ten times and cut out the circles) or use this interactive tool.
I have made a triangle shape by arranging these circles.
Can you move some of the circles to flip the triangle so it is pointing down?
How many moves did it take?
Can you do it in 5 moves? 4 moves? How about 3 moves?
Categories: Elementary