Get three jars, line with paper as in hand wiping. Fill with dirt and place about three bean seeds in the area bteeewn the paper and the jar. Put enough water to moisten the soil. Put one in a cupboard in a dark place, put one on a table outside and the other if possible under continual light. Hypothesise that the plant in the sun will grow the best. Each week document the plants colour, growth and health. Make sure each plant has enough water added each week to ensure moisture is good. You will be surprised at the result.