This classroom action research is an effort to increase student learning participation in science learning using the Problem Based Learning (PBL) model. Based on the pre-cycle scores, it is known that of the 24 students there were only 6 students who met the score > KKM (75) while 18 of them had the score < KKM (75). Based on the scores in cycle 1 of my material and my needs, it is known that of the 24 students there were only 12 students who met the score > KKM (75) while 12 of them had the score < KKM (75). If examined carefully, this score of 75 was only obtained by a small number of students in the class. So if it is a percentage, it is very far below the specified percentage of total student completion, namely 75% of the total number of students. For this reason, it is very necessary to improve the deficiencies in cycle I learning through the implementation of cycle II actions. Based on the scores in cycle 2 of the material on how do I meet my needs, it is known that of the 24 students there are only 17 students who meet the score > KKM (75) while 7 of them have the score < KKM (75).