“Exploring the material world” Discovering forms Teaching kit “Exploring the material world” Discovering forms

Triangle, square, circle and other forms… By widening the range of observation and encouraging comparison, the teacher helps the children to distinguish various types of criteria (form, size, mass, capacity etc) and to establish classifications and categories.

Triangle, square, circle and other forms… Activity 20 : Triangle, square, circle and other forms… This activity requires supervision. Children can repeat the experiments on their own after working on them with the mediator.

side 1 Activity 20 : Triangle, square, circle and other forms… ? Exploring the material world: Discovering forms Sheet n° 20 Activity 20 : Triangle, square, circle and other forms… side 1 Square Triangle Circle Rectangle ? Squares Circles Triangles Rectangles

? - Can you name these forms? Exploring the material world: Discovering forms Sheet n° 20 - Can you name these forms? square triangle circle rectangle ? Squares Circles Triangles Rectangles

- Show me the circles… and the squares… Exploring the material world: Discovering forms Sheet n° 20 - Show me the circles… and the squares… Square Triangle Circle Rectangle ? Squares Circles Triangles Rectangles

Exploring the material world: Discovering forms Sheet n° 20 - Count the triangles that make up Isidor and note down your observations in the table… Square Triangle Circle Rectangle ? Squares Circles Triangles Rectangles

Through various games, they can be encouraged to form naming or recognition strategies

The games can lead them to differentiate and classify objects according to their shapes, with particular reference to their outline: straight, curved, flat, rounded etc.

Counting and associating… Exploring the material world: Discovering forms Sheet n° 20 Next stage: Counting and associating…

How many shapes do you need to make an Isidor rabbit? Exploring the material world: Discovering forms Sheet n° 20 How many shapes do you need to make an Isidor rabbit? Side 2 How many… Triangles ? Squares Circles Rectangles ?

These games can also lead to the reproduction of assemblies of simple shapes; - to a comparison of objects according to size…

Side 3 Next stage : How many… Exploring the material world: Discovering forms Sheet n° 20 Next stage : How many… Side 3

Side 4 Next stage : How many… Exploring the material world: Discovering forms Sheet n° 20 Next stage : How many… Side 4

Although the names of some shapes are introduced (square, triangle, rectangle, circle), the main aim is not to learn mathematical vocabulary. NB !

1. differentiate and classify objects according to characteristics related to their shape; 2. recognise, classify and name simple forms : square, triangle, circle; 3. reproduce an assembly of simple forms on the basis of a model (puzzle, tiling, assembly of solids). At the end of a period of supervised activity, the child should be able to…