This study investigates the pattern finding skills of pre-school children and the in-class pattern activities conducted by teachers. The research was designed as a descriptive survey study carried out with a total of 162 children aged 60-77 months from families with middle socio-economic status. The findings of the study revealed that the children's pattern-finding achievement was above average and that there was not a significant difference between the pattern finding skills of the children in terms of gender and age. Lastly, in relation to pattern categories, the results showed that the children were more successful in the repetitive pattern category and pattern subcategories, and structures were effective in the children's pattern-finding performance. In addition, the teachers were found to use repetitive patterns more frequently and triple-structured patterns most frequently in in-class pattern activities.