(1 million grains would be 25 kg, so 1 kg is 1 million / 25 = 40 000.) After a few suggestions, give a clue – that there are about 1000 grains in 25 g. Ask the students to guess how many grains of rice there are in the bag. Introduce the topic and the purpose of the session, using a 1 kg bag of rice. Sequence of activities Demonstration and introduction
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