-- eat 3 marshmallows
-- give away the toothpicks
-- the remaining marshmallow is a 3-d figure all by itself
break the toothpicks and you've doubled your amount of toothpicks
You make 3-D! Look... 6 squares in one cube and you can do that with toothpicks too!
Arrange the 9 toothpicks thus: 7 + 3
A square has 4 sides therefore 3 squares from 12 toothpicks will simply be three unconnected squares
Yes
move
There is a pattern here: Level 1 uses 3 = 3 × 1 toothpicks Level 2 uses 6 = 3 × 2 toothpicks Level 3 uses 9 = 3 × 3 toothpicks So it looks like each level uses 3 times the level number of toothpicks. ı→ 3 × level = 24 → level = 24 ÷ 3 = 8 So Level 8 uses 24 toothpicks.
3+1+1=5 5 toothpicks
Are these numbers decimals? Is it 14.35 inches and 3.15 inches? If that is the case, then 14.35/3.15 = 4.56 or 4 toothpicks.
You arrange 12 toothpicks into a large square, subdivided into four squares : 2 toothpicks on each side and four more, one each from the middle of the sides to the center of the large square. Now you have four (small) squares. Take away 2 adjacent toothpicks from the ones in the center, and you have 2 squares : one remaining small one and the large one that has the small one inside it. (see related link)
Think in 3-dimensions and make a tetrahedron (a triangular pyramid).
Think triangles!