The summer meal program is important because some children only eat at school. School is the only food they get and they can't go two months without food because they would starve so this is very important.
Because oh the toxins in the onion, they trigger our tear ducts.
This is heavily disputed, and honestly, it varies on a person-by-person basis. Some people are visual learners (so it's effective for them to use videos and pictures to help them study), some prefer being hands-on, etc...
Generally though, I'd say the most effective method that works for most people is through visceralisation. This is the process of associating concepts, words. phrases etc. with your different senses (sound, touch, images...). You can read up more on it by searching up "visceralisation for studying".
