Mr. Tiffin brings three pumpkins to class - one large, one medium and one small pumpkin. Robert guesses that the largest pumpkin has one million seeds, Elinor thinks that the medium pumpkin has 500 seeds and Anna estimates that the little pumpkin contains 22 seeds. Charlie does not guess at all. The students think of different groupings to count the seeds in the pumpkins. The class learns that being the largest pumpkin does not mean it contains the most pumpkin seeds.--Ministry of Education website.

Science grade 3 (2010). Mathematics grade 4 (2007). Mathematics grade 5 (2008).