This study aims to find out the learning activities carried out by elementary school teachers who use the previous version of lesson plans (RPP) or called as RPP K 13 and the new-simpler one or called as RPP Merdeka. The longer version was regulated by the Ministry of Education and Culture in 2016 consisting of 12 components compared to"RPP Merdeka" which takes only 3 components. The research subjects were elementary school teachers and students in Jakarta, both public and private schools that used "RPP Merdeka" (10 people) and "RPP K 13" (10 people). The research instrument was a non-test using google form and the Teacher Ability Assessment Toolkit (APKG1 and APKG 2). Instrument through observation of two observers whose value is averaged. Google forms are used to get supporting data. Two independent sample t-test with the help of SPSS was used for the data analysis. The statistical test results shows that the data of significance is 0.747> 0.01, so the Ho data is accepted and H1 is rejected. The use of RPP Merdeka or the previous version of it does not affect the learning activities, in other words, learning activities are the same regardless the different type of those RPP. Moreover, learning activities are strongly influenced by the teachers' ability to manage classrooms and use of learning media. The way the teachers teach will affect the interactions that occur in the class. The lesson plan (RPP) function is as a guide in learning activities. The teacher carries out learning activities that are carried out regularly, so that without including the elements that exist in the previous version of the lesson plan, respondents are used to using media, materials, and sources. This element implicitly exists in the core of learning activities.