Many dry cereals are fortified with iron, how would you prove that?

As a teacher I used to run an experiment with my kids in which they put cereal in a ziploc bag and crushed it up with a rolling pin. Then they placed a magnet in the bag and shook it. When they pulled the magnet out of the bag it pulled the iron out with it.

To prove that many dry cereals are fortified with iron, you can follow these steps:

1. Start by gathering a sample of different dry cereal brands. Choose a variety of brands from different manufacturers to make the results more representative.

2. Read the nutritional labels and ingredient lists of each cereal box. Look for any mention of iron fortification or the inclusion of iron as an ingredient.

3. Identify the specific type of iron added to the cereals. It is typically listed as "iron," "iron (ferrous sulfate)," or a similar form.

4. Calculate and compare the iron content in each cereal. Look for the amount of iron listed per serving size. Make a note of the variations in iron content across different cereal brands.

5. Research the regulations and guidelines set by the respective country's food authorities. Check if the fortification of iron in dry cereals is a mandatory requirement or if it's voluntary.

6. Consult scientific studies or research articles on iron fortification in dry cereals. Look for publications that analyze the iron content in various cereal brands. These studies can provide statistical data and further evidence to support your claim.

7. Compile your findings into an organized presentation or report. Include details such as the number of cereal brands that were sampled, the percentage of fortified cereals, the range of iron content, and any relevant regulations or studies.

By following these steps, you can provide evidence to prove that many dry cereals are fortified with iron and support your statement with factual information.