This study aims to identify the influence of daily-life-related number concept storytelling activities on the
mathematical problem solving ability and peer competence of child. For subjects, 25 five-year-old children from
the B kindergarten located in the city of K were allocated to the experimental group and 25 five-year-old
children from the E kindergarten also located in the city of K to the control group. To the experimental group
was the activity of listening to a story of daily-life-related number concept, identifying its concept, and making
up storytelling were applied. To the control group, the activity of listening to a number-concept-related
children's story, story sharing activities, and drawing related pictures were applied. A test for mathematical
problem solving ability and peer competence was conducted to verify the educational effect of daily-life-related
number concept storytelling activities. This study utilized the test tool for mathematical problem solving ability
developed by Ward (1993), translated by Hwang Jeong Sook (1996), and reorganized by Ryoo Hye Sook(2003)
and the test tool for peer competence developed by Park Joo Hee and Lee Eun Hae(2001). The results revealed
that the experimental group with experiences of daily-life-related number concept storytelling responded with
more positive mathematical problem solving ability and peer competence than the control group. This finding
implies that daily-life-related number concept storytelling activities can be utilized in child education fields as a
new teaching/leaning tool for mathematical problem solving ability and peer competence.