[1]
เถาว์โท อ. and สราวุธ จ. 2018. The Development of Learning Achievement in Topic of Solving Polynomial Fractional of Ninth Grade Students by using Problem-Based Learning Approach. Journal of Graduate School, Pitchayatat, Ubon Ratchathani Rajabhat University. 13, 2 (Dec. 2018), 245–254.