Jerome Bruner's Concrete-Pictorial-Abstract (CPA) approach in math education guides students through 3 progressive stages of learning. Initially, students engage with concrete materials, like manipulatives, to explore math concepts. They then transition to the pictorial stage, where visual representations reinforce concepts learned concretely. Finally, in the abstract stage, students write symbols and numbers to consolidate their understanding. Watch a second-grade student at Zindagi Trust solve