Infourok

What is nature? Nature is the living world that surrounds us, it exists in the never ending variety of colours, smells and forms. And even we are a part of nature. Nature is all around us - and this video lesson is about to tell the most important facts about it. It tells the kids what nature is through explanation, illustrations, animation, simple tasks. It also goes into the term of 'natural phenomenon', considers ecology, explains why the sky is blue and tells why it is important for children

This presentation is dedicated to a parallelogram. It starts with the definition which is followed by a clear and easy explanation of the six properties of a parallelogram. Each property is consequently proven. Succesfully used this presentation in my own practice, therefore with confidence recommend it as an easy way to support your explanation on the topic.

The presentation describes the pyramid and illustrates its elements: vertex, edges, altitude, base, and lateral faces. In my presentation I give the definition of the regular pyramid and its slant height. I also derive the formula for the volume of the pyramid.