The foods that primary school students can cook are: fruit salad, sandwiches, fried eggs, pasta and biscuits.

1. Fruit salad: Fruit salad is a simple and healthy food. Pupils can choose fruits according to their personal preferences. Apples, bananas, grapes and oranges are cut into small pieces and mixed with some yogurt or jam.

2. Sandwich: Sandwich is a fast food with balanced nutrition. Pupils can prepare bread, ham, cheese and lettuce, and then clip them together in sequence.

3. Frying eggs: Frying eggs is a simple cooking project. Pupils can learn how to use a pan and a fire source safely under the guidance of their parents to fry eggs.

4. Spaghetti: Spaghetti is a popular Italian pasta. Pupils can participate in the process of cooking noodles and preparing sauces, such as tomato sauce or cream sauce, and then mix them with cooked pasta.

5. Cookies: Baking cookies is an interesting activity, and primary school students can participate in the process of batching, stirring and shaping. Parents can help primary school students learn the basic skills and precautions of baking.