Table 1 Anatomy of the online intervention, example of session activities and their rationale

4

SS

Reading and discussion of Chapter 1 - YTT

The chapter introduces the colors of the rainbow (the main characters of the story) and their psychological characteristics (e.g., Violet is strong and courageous).

Introduce the story’s characters and establish a parallel between the characters’ psychological characteristics and reflect how these characters may behave regarding their nutrition.

PIA

What color is my family’s nutrition?

Children will be asked to choose between drawing the rainbow and matching the family members with the colors in terms of their nutrition; or writing about the association between the colors and their family members and their nutrition. In the end, children must take a photo and share it in the forum.

Get to know and become owner of the characters of the story to promote an identification with the plot.

11

SS

Reading and discussion of Chapters 9 and 10 – YTT

The pic-nic of the problems.

Behavior and emotions analysis; the importance of responsible acting and impulsivity management to solve non-adaptive strategies and behavior barriers and improve adaptive solutions.

PIA

Barriers to healthy eating

Children will be asked to discuss in family and comment a scenario related to different problems that children face (e.g., lie, fear, tantrum, annoyance), such as “John makes a tantrum in almost every meal because he does not want to eat the soup”. Then, they have to express on the forum their thoughts on why this might happen, what are the consequences of such behavior, and suggest alternative behaviors.

Emotional and behavioral problem characterization, anticipation of consequences, and reflect on adaptive behavior alternatives.