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At the Grecian pizza parlour, apprentice Ambrose is learning how to make lots of pizzas from a 2kg weight of dough, from his boss. Ambrose must work out how to make 20 small pizza bases that are an equal size and weight. He tackles the problem by breaking off pieces randomly, resulting in some large and some small pizzas. It is suggested he uses weighing scales. Three questions of increasing difficulty help to work out how to solve the problem, including having a mixture of large and small pizzas to make from the 2kg dough.
This clip is from:
First broadcast:
22 March 2012

Classroom Ideas

This clip is useful as a lesson starter. It tackles the difficulty children experience in choosing the correct operation when solving problems. In this case it is division. To solve this they will also need to know that there are 1000g in a kilogram. Three differentiated questions help to structure the problem and the last question has a mixture of pizzas and requires more than one step to find the solution.

Use the statement posed in the clip "Out of 2kg of dough, we make 20 pizzas". Ask the children how many grams of dough it takes to make 1 pizza? 5 pizzas? 2 and 1/2 pizzas? Can anyone convert that into imperial units? Does anyone know what ingredients dough is made out of? Watch the clip further and get the children to discuss what mistakes Ambrose is making and how he should be doing it. Watch the clip further and discuss the question posed. With a variety of statements based on the pizzas, get the children to rearrange these to form the problem. The children should discuss which the relevant and irrelevant information is and what they should get rid of, as well as how they can calculate it.

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