Every child has a future that is inseparable from the stimulation of the development. The scope of cognitive development is closely related to logicalmathematical intelligence children aged 5-6 years are at the stage of pre-commercial play that begins to require creative material to think concretely and thus requires educational play tools. In fact the use of educational play tools to stimulate logicalmathematical intelligence of children aged 5-6 years in some early childhood education institutions is still not optimal. This is the background of researcher in developing U-Kids card game tools effective, efficient and attractiveto stimulate logical-mathematical intelligence of children aged 5-6 years. This research and development uses the ADDIE development model. These results indicate that the U-Kids card game tool has a percentage of eligibility of 90,7% (very feasible) with an effectiveness aspect of 92,22% (very effective), an efficiency aspect of 90,95% (very efficient) and an attractiveness aspect of 88,88% (very attractiveness). Based on these results it can be concluded that the development of the U-Kids card game tool to stimulate logical-mathematical intelligence of children aged 5-6 years is very valid in terms of effectiveness, efficiency and attractiveness.