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Our grandparents' problems (13)
Angelo Silva, Helder Pinto
The five addition and subtraction calculation strategies for the 1st year and their impact on 1st cycle learning
Carlos Pereira dos Santos, Helena Martins, Luisa Silva, Maria de Fatima Areias, Ricardo Cunha Teixeira
Stem-and-leaf diagrams
Alda Carvalho, Carlos Pereira, Ricardo Cunha Teixeira
National Mathematical Games Championship
Ludus Association