Does our egg breathe?

Great Bear Class were very intrigued to learn about animals that develop inside eggs. We were worried that our baby dinosaur couldn't breathe if covered up so we conducted an investigation to find out.

Here is what we did; we submurged 3 eggs in a mixture of water, blue food colouring and washing up liquid. We left them for and hour. We predicted that when we cracked the eggs open we would find that the eggs inside were blue because egg shells have tiny holes that allow the developing animal to breathe.

There was lots of amazing discussions about what might happen, what we discovered and the reasons why. We found that the inside of the eggshells were stained with tiny blue spots, showing that the eggs had absorbed the blue water through the tiny air holes. But the eggs themselves were not blue as we had thought they might be.A very interesting investigation, we all learnt lots, including the grown ups!