Planting Beans - what happens under the soil?

Some of our Little Gardens haven't appeared to have done anything, so Catherine thought we could do an experiment with some bean seeds, to see what happens underground.

We used two recycled soft drink bottles that the tops had been cut off.  We lined the bottles with black paper and filled the inside of the bottle with seed mix.  

Then we put three seeds around the outside bottle between the clear plastic and the black paper.

We also planted one seed in the top of the bottle.

After covering this seed with seed mix, we poured water over the seed mix (soil).

The last step was to make a black paper tube that would slide over our bottles, so we could trick the seeds into thinking they are planted in the ground.  

Once again we will have to wait to see what happens next ....