The human body consists of water, carbon, salt, fat and iron. This must come from the food we eat. Does this mean we need to eat nails? An experiment using a beaker, magnet, water and cereal proves that some breakfast cereals contain iron.
Could be used to investigate how much cereal there is in cereals that are eaten by the class. The teacher could ask the children to collate which cereals are most popular in the class and then the children could investigate using a magnet as used in the clip. Once the results are collected, the children could produce bar charts or pie charts to show which cereal has the most iron in it.