December 2022
Put 10 coins into one triangle and three into inverted triangles. Can you do it? Draw a picture
Put a triangle with 10 coins of the same size. Now only three coins are moved to make the triangle down, can you do it? .......... .... I can't draw it
Use 6 coins into a triangle (see Figure 1). Ask, at least a few coins need to be moved to arrange the shape of Figure 2 (please draw on the figure to move
Loose a triangle with 6 coins (Figure 1). Ask, at least a few coins need to be moved to arrange the shape of Figure 2 (please draw the coins to be moved on the figure).