“…The gain from cycle 1 to cycle 2 show the improvement from think pair share and lesson study approach. This result give other proof of the previous different study that problem solving (Snell et al, 2014) (Hämäläinen & Cincinnato, 2014), think pair share (Gok, 2018) (Bamiro, 2015) and lesson study (Wood & Cajkler, 2017) (Chizhik, Chizhik, Close, & Gallego, 2017) (Cajkler, Wood, Norton, & Pedder, 2014) (Bjuland & Mosvold, 2015) give positive influence in the quality of learning.…”