The past couple of weeks, we have been learning about chicken life cycles. As we’ve read a few books, the students have been noticing that many of the pages show photos of the inside of an egg as a chicken is developing. They were very curious about how the photographer was able to see the inside of the egg and offered some theories: they hold a flashlight to the back of the egg, scientists have special cameras, they use a microscope, etc. No matter the theory, we agreed it would be very neat to see the inside of an egg ourselves.
On Monday, I brought in an egg and some vinegar to begin an experiment to dissolve the shell off of an egg. The students observed the size, color and texture of the egg before we put it in the vinegar. After just a couple of hours, there were many bubbles covering the egg.
We checked on our egg again on Wednesday, and it had transformed! The students observed that it was now soft, rubbery, yellow, and bigger than before. Although we weren’t able to see the inside of the egg as clearly as I had hoped, it was still neat to be able to see a shell without an egg and see the effects that the vinegar had on the egg. 
