The 70-30 reform brought to mind many considerations on the subject of “significant learning”, especially in the chemistry subject that calls for significant learning all year long both in the laboratory lessons and the theoretical ones. Transferring the optional unit that was studied in the twelfth year to the 30% program created for us, the teachers, the chance to design for ourselves subject matters that are more relevant to everyday life. This includes instilling skills such as public speaking, online searching, individual and group studies witho. For us to teach with a great passion that will pass on to the students we need to teach the subjects that are best suited to us. In my lecture I will present a program that was developed for the twelfth year students in Rotberg high school in Ramat Hasharon that combines teaching natural gas and renewable energy sources with thermodynamics and environment.