Pizza and Chocolate Problems

We had the playdough out again today to learn about fractions. Room 2 was transformed into a Pizza and Chocolate Restauarant. We made Pizza and had to work out how to make sure it was cut so that two people would have fair shares- equal amounts. We talked about how the parts had to be the same if they were fractions.

This one is cut down the middle. It wasn't fair but it has some tasty toppings.

 

We decided we needed a way to check if the pieces were fair.

 Some people started to make lots of little bits and then share them out into groups.

 

William G had an idea to cut the pieces into strips and then pile them up.

Mrs Walker got some rulers and the measuring began. Some people realised that they could put the pieces on top of each other and see if they were the same. Mrs Walker said they were comparing the area of their peices.

 Thomas and William P wanted to write the fraction they had made. Thomas had 31 pieces so 1 piece was 1 out of 31. He wrote it on the board. William counted the chocolate pieces he had made his chocolate pieces were 1/24 of his block of chocolate. We talked about how numbers at the bottom of the fraction that were bigger actually were smaller fractions because there were more pieces so each piece had to be smaller. Our 1/2 pizzas started to look pretty big.