Some house building material med to be considered in order maintain the house climate and atmosphere.Sand beeng the most essential building material for brick laying columns, beams, plastering and paving, this material reats to temperature variation this causing some temperature. The specific heat being a characteristic propriety, it varies with a given sample of substance. The choice of one or other type of sand for house building contributis to home climate quality of factors.
Heat always spread from the hottest part of a solid (high temperature) to the cold part (low temperature). However, the increase heat in this propagation decreases according to the influence of temperature variation along the surface and not according to the variation between the two points.
Teaching physics in the DRC (Democratic Republic of Congo) basic to the PPO (Pedagogy by objective) with a focus on what the learner needs to know at the end of the lesson. In this literature, we try to renovate this teaching by putting a focus of problem based learning by the APC (Approach by competence). This approach allows the learner :
- to improve the assimilation of the learned concepts and to concretive them by concrete realizations;
- to mobilize the resources.
- to develop the competences.
On this we propose some lessons on the heart with a new methodological structure.
Somme schools in the DR Congo have been successful because the APC has significantly improved the overall performance of even the weakest learners.
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