Teaching of Area. I tried to show how teaching through problem solving can be done for students in Primary 3. We did Tetrominoes (Make different shapes using exactly four square tiles.), Quadrilaterals (Make different quadrilaterals using exactly three square tiles and two half-square tiles), Area is Five Problems (Use the geoboard to make quadrilaterals of area 5 square units.). We ended by exploring the Pick's Theorem using the findings of the last problem. I wished I had more time for the students to explore the relationship between area and number of 'dots'.