Pak Wiyana nerangake ngasta alat peraga. Banjur nulis ing blabag. pak Wiyana pancen titen, angger bocah-bocah padha meneng bae, katon plonga-plongo, mripate kethop-kethop, iku tandhane bocah-bocah durung mudheng, durung dhong. Mula, Pak wiyana banjur mbaleni nerangake meneh kanthi sabar lan alon cetha. Bocah-bocah nuli padhang ulate, tandha yen wis nangkep isining wulangan.