1. Implementation 1.Review the mathematical concept. 2.Review the problem solving steps. 3.READ: Children read the part that is asking them to find something out. 4.UNDERSTAND: Children explain what they need to find out. 5.Children identify what information they will need to find it out. 6.Remove the coloured rectangle. 7.Children find the information they need to find it out. 8.CHOOSE A STRATEGY: Children identify strategies that they could use to find it out. 9.USE A STRATEGY: Children use a strategy to find it out. 10.Children record their thinking as they find it out. 11.CHECK: Children reread the part that asked them to find something out. 12.Children check that they have found it out. 13.Children check they have recorded their solution correctly. 14.Children follow the problem solving steps to solve the 2 nd level of the problem, with minimal teacher guidance. 15.Children who solve the 2 nd level, follow the problem solving steps to solve the 3 rd level of the problem independently. 16.Children use the problems as a guide to create their own problem, either alone or in pairs/small groups. 17.Children solve their own problem. Throughout the lesson, children share solution strategies. At the end of the lesson, children explain how they created their own problems.

2. Problem Solving Parts of Circles Create your own problem! Now solve it! Measurement and Geometry 65 Cho constructed a circle with a radius of 4 centimetres. What is the diameter of the circle? Ron cut his round cake into 4 equal sectors. What could his cake look like? Harry made a pizza and cut it into 8 equal sectors. What could his pizza look like?

3. Problem Solving Parts of Circles Create your own problem! Now solve it! Measurement and Geometry 65 Hermione made a pizza and cut it into 6 unequal sectors. What could her pizza look like? Ginny made a circular cake. She used a cake tin with a diameter of 22 centimetres. She cut the cake into slices that were sectors. What is the length of the side of each slice?

4. Problem Solving Parts of Circles Create your own problem! Now solve it! Measurement and Geometry 65 Severus made a circular birthday cake. He placed 32 candles on the cake, equally spaced around the cake. How many candles in each quadrant? Cedric made a pizza. He placed anchovies on one quadrant, olives on another quadrant, and pineapple on 2 quadrants. What could the pizza look like?