The force that makes objects roll is gravity
Kinetic.
they are acting due to gravity (point to be noted).
The Earth's gravity will force a round object to roll down an incline (slope).
gravity
to make a forward roll harder there are many things you could do heres a list of some: handstand forward roll dive roll forward roll to standing stradle forward roll staight legs free roll (no hands) forward roll on beam/bench and much more
Roll clay and put by fire till its hard and lite colored
As fast as you throw them...
Coins, marbles, balls, and wheels can all roll.
Kinetic.
Marbles is one of the first games ever played. There are different rules in different parts of the world, but in general people try to roll or throw their marbles to knock other marbles out of place.
shove them in your mouth roll them around thats how you find tounge texture. roll in hand for touch.
they are acting due to gravity (point to be noted).
its just like aggravation you ply with one die and colored marbles a 6 gets you out and roll again also a 1 gets you out if you roll a number and can land in the middle your stuck untill you roll a 1 to get out BUT then you can move to any spot on the ring NO JUMPING YOUR OWN MARBLES
There has to be 12 marbles in the group. If 4 are red that is 1/3 of 12 and if 3 are blue that is 1/4 of 12. The rest can be any color. That is how you explain how four red marbles can make up 1/3 of a group of marbles and three blue marbles make up 1/4 of the same group :)
In order for 4 red marbles to be one-third of a group and 3 blue marbles to make up one-fourth of the same group the number has to equal 12.
what are magic marbles ,they sound cool! do we have them in England
Steal there marbles.