Fox, Chicken, Grain
"Fox, Chicken, Grain" is one of my favorite logic puzzles for younger students. Here are the rules. A farmer wants to successfully ferry a fox, chicken, and sack of grain across a river. He can take several trips back and forth, drop things off, and pick things up on each side of the river between trips. But he can carry only two things in his small boat, other than himself, at one time. Unfortunately, the farmer has a few problems. If left alone together on the same side of the river, the fox will eat the chicken, and likewise, the chicken will eat the grain. But the fox will not eat the grain (and, of course, the chicken will not eat the fox). How to get everything safely across the river? I usually use coins of different sizes to represent the fox, chicken and grain, and a small torn piece of paper as the boat (rowed by the farmer). It helps to use a sheet of paper with a "river" drawn on it to simulate the situation. You an download a printout here . Similarly, ...