We have been learning about the digestive system in science this half-term. Today, we planned and carried out a science investigation to answer the question: Which drink causes the most tooth decay? Using eggshell to represent tooth enamel, we placed it in the cups of various liquids. In 3 days, we'll see what has happened.

We also learned how to keep it a fair test by deciding which variables to change and which to keep the same. I wonder what you think will happen to the eggshell?