Does it matter what drinks we have?  Do drinks affect our teeth?  These are just two of the questions that the year 3/4 children have been looking at.  The children planned a science investigation to see if they could  find out using some common drinks.  Unfortunately, none of the children were willing to give up their gleaming front teeth for the investigation so we had to settle for some eggshells instead.

See below for the end results after leaving each eggshell in a jar of liquid.  The children predicted and gathered results in four areas: smell, hardness, colour change and size (did the eggshell start to disintegrate?).

Maybe you could try this with other drinks at home.  You could compare coke with other variations such as diet coke.  If you do, make sure you let your teacher and class know the results.