The experimental group receive nine educational sessions (one per week) about different vegetables and, at lunch time, they are exposed to a different vegetable. If they try it, they will receive a sticker. In each session, researcher will record their preference for the vegetable and the quantity that they consumed in a scale from one to three (1- the child tasted it; 2 - the child repeated it; 3 - the child ate all the quantity). In the end of 9 sessions, all children (experimental and control group) will receive the same salad that they had eaten at baseline and the procedure will be the same: the salad is weighted before and after the consumption of each child to verify the quantity of each one ate.

Children in the control group don´t receive an educative session. Before the study starts children are asked to eat a salad. After 9 weeks, all children in the control group will receive the same salad that they had eaten at baseline and the procedure will be the same: the salad is weighted before and after the consumption of each child to verify the quantity of each one ate.

The experimental group receive nine educational sessions (one per week) about different vegetables and, at lunch time, they are exposed to a different vegetable. If they try it, they will receive a sticker. In each session, researcher will record their preference for the vegetable and the quantity that they consumed in a scale from one to three (1- the child prooved it; 2 - the child repeated it; 3 - the child ate all the quantity). In the end of 9 sessions, all children (experimental and control group) will receive the same salad that they had eaten at baseline and the procedure will be the same: the salad is weighted before and after the consumption of each child to verify the quantity of each one ate.

Child Food Neophobia Scale (Pliner 1994) - this scale is composed of ten questions, being answered by parents in a scale from one to seven, in which number one means "very similar to the reality of my child" and seven means "extremely distant to the reality of my child". This scale is able to evaluate child's food neophobia and child's food neophilia

Child Eating Behaviour Questionnaire (Wardle, Guthrie et al. 2001) translated and adapted for portuguese reality by Viana et al (Viana and Sinde 2008). This questionnaire is answered by parents to evaluate child's eating behaviour and is composed of 35 questions. In each question the answer is in a scale from one to five, in which one means "never" and five means "always".

Assessing intake of an unfamiliar salad served at lunch at three distinct moments: baseline (T0), immediately following intervention with the experimental group (T1) and ten weeks after (T2) (immediately following the intervention with the control group). This third evaluation will allow measuring the impact of the intervention at a longer period of time (Laureati, Bergamaschi et al. 2014)