Introduction to measuring tools is an important step in early childhood learning to help them understand basic measurement concepts such as length, weight and volume. Prescholl dan kindergarten at Nurul Ma'arif, this activity is designed with a creative and fun approach, so as to increase children's interest in learning. Through the use of simple measuring tools such as rulers, scales and measuring cups, children not only learn to recognize concrete sizes, but also develop cognitive, motor and logical skills. The implementation of this learning supports the achievement of holistic early childhood education goals, namely forming an intelligent, critical and innovative generation from an early age. The research used the classroom action research (PTK) method which consisted of two cycles, involving 5 children aged 4–5 years as subjects. Data was collected through observation, interviews and documentation, then analyzed descriptively qualitatively. The results of the research show that a play and experimental approach with simple measuring tools, such as rulers, stopwatches and weight scales, and clocks can increase children's understanding of the concept of measurement. Children become more active and enthusiastic in learning, with an increase in their ability to recognize length, determine body weight, recognize time and running speed. This research concludes that play and experimental approaches are effective for introducing measurement concepts to young children, as well as supporting the development of their fine motor and cognitive skills.

 The lava lamp exercise with the children of kebonsari urban village, citangkil sub-district is a fun and educational activity that involves making simple lava lamps using materials easily found at home. This study aims to explore the children's experience of the lava lamp experiment, and its impact on their understanding of basic chemistry concepts, and chemical interactions. Through a teaching approach based on simple science experiments and participatory observation, children were given the opportunity to experiment with a mixture of oil, water, and coloring agents to create interesting visual effects in their own lava lamps. The results showed that this practice not only increased children's interest in science, but also strengthened collaborative skills, and understanding of basic experimental concepts. This experiment highlights the importance of experiential and interactive learning approaches in developing childrens I nterest in science.