The Philippines' National Book Development Board (Filipino: Pambansang Lupon sa Pagpapaunlad ng Aklat), abbreviated as NBDB, is an agency of the Philippine government under the Department of Education responsible for developing and supporting the Philippine book publishing industry.
Mathematics 2: Visualizing Plane Figures and Square Units
Mathematics 2: Investigating Accuracy in Measuring Mass
Mathematics 2: Illustrating Division as Repeated Subtraction
Mathematics 2: Converting Standard Units of Mass Measure
Mathematics 2: Approximating Length, Width, Height, and Distance
Mathematics 2: Using Standard Units of Linear Measure