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Escola Básica 2,3 D. João de Portel

Portel - Portugal

Age:
10 years old

Aims:
• To understand the concepts of the least common multiple and the greatest common divisor of two numbers and determine its value .
• To identify the data, the conditions and the objective of the problem .
• To develop and implement strategies for solving problems, checking the suitability of the results obtained and the processes used.
• To investigate the possibility of diverse approaches for solving a problem .
• To formulate and test conjectures.
• To interpret the information and mathematical ideas represented in different forms;
• To represent information and mathematical ideas in various ways;
• To express ideas and mathematical processes, both orally and in writing, using notation , symbols and vocabulary .
• To discuss results, processes and mathematical ideas .

Materials:
- Worksheet;
- Pencil and rubber;
- Calculator;
- Transparencies;
- Acetate pens
- Overhead Projector .

Introduction:

- Explanation of the work to be done in the classroom;
- Split the pupils into groups of 4;
- Distribution of the material (worksheet, calculators, pens and acetate pens);
- Silent Reading of the task carried out by the groups;
- Discussion of any doubts that may have arisen after the reading of the task.

Main part:
- Exploration of the task undertaken by the pupils;
- Each group presents an acetate with what they propose as a resolution to the task;
- Discussion of the task in the large group;
- Systematization of content.

Roundup:
Pupils should solve the task autonomously but always under the supervision of the teacher. Thus, students will be the builders of their own learning since they are responsible for the acquisition of knowledge.