Hortelano, J. C., and M. R. Lapinid. “Recontextualizing Kalinga’s Batek and Laga into an Ethnomathematical Teaching Resource: An Application of the Second Generation of Didactical Engineering”. Journal on Mathematics Education, vol. 15, no. 2, Feb. 2024, pp. 385-02, doi:10.22342/jme.v15i2.pp385-402.