The aims of this study were (1) to determine the improvement of experimentation skills in studying heat and sound energy with the experimental method of fourth grade students at SDN Bagsongan, Kayenkidul District, Kediri Regency, (2) to determine the improvement of the ability to describe heat and sound energy with experimental methods in class students. IV SDN Bangsongan 1, Kayenkidul District, Kediri Regency. This study uses a Classroom Action Research (CAR) approach with the research subjects being fourth graders at SDN Bangsongan 1. The study was conducted in two cycles. Data was collected by using teacher activity observations, student activity observations, performance observations and tests. The data analysis technique used is the average percentage analysis. The results of this study can be concluded that: (1) learning with the experimental method can improve experimenting skills when studying heat and sound energy of fourth grade students of SDN Bangsongan I in the first cycle the student performance results obtained an average of 58.5% and in the second cycle increased to 88%. This is supported by an increase in teacher activity with an average of 66.1% increasing to 89.6% and an increase in student attitudes from 58.3% to 88.7%; and (2) learning with the experimental method can improve the ability to describe heat and sound energy based on the assessment of student test results which is indicated by an increase in the average score of students is 68.61 with a learning mastery percentage of 51.6% in the first cycle and in the second cycle the average the average becomes 79.55 with the percentage of learning completeness 87.1%.

The students' storytelling ability after using hand puppet media, the material retells the children's stories that were heard using the second grade students' own words. The validity, practicality, and effectiveness of the hand puppet media were used in the material for retelling children's stories that were heard using the second grade students' own words. This study uses a research development (R & D) procedural model with Borg and Gall development procedures. The research subjects were 31 students of class II SDN 1 Sombron, Kediri, by giving tests to students through pretest and posttest research techniques by providing instruments in the form of 4 psychomotor test questions, namely storytelling. The conclusions of this study are: (1) The process of developing hand puppet media is easy to do with creativity and new innovations to make it look more attractive to students. (2) The ability of students to retell the story they have heard using their own words after using hand puppet media increases. The results of the pretest obtained an average score of 81.2 students, while from the posttest results the average score of students was 86.8 (there was an increase of 5.6). From the test results, it can be said that the use of hand puppet media is effectively used in Indonesian language lessons with the material of retelling children's stories that are heard using their own words because students are more active and enthusiastic in learning activities. (3) Validation carried out by material experts and media experts got a score of 85.285% so that it can be stated that the development of hand puppet media is very valid, very effective, very complete, can be used without improvement.