Materials

Natural materials are

• materials that can be used as they are found in nature

• materials that can be used transforming them before

• materials that you can find only in a supermarket

• materials called bio

Examples of natural materials are...

• Plastic and paper

• Paper and glass

• Wood and Stone

• Stone and paper

Natural materials are also called (a)   materials

Examples of transformed materials are

• Stone and glass

• Paper and glass

• Plastic and steel

• Rubber and Cardboard

We can classify materials in these groups:

• Wood, Silk, Metals and Glass

• Plastic, Steel, Golden and Paper

• Textiles, Plastic, Wood and Other materials

• Wood, Plastic, Metals and Other materials

A physical property is

• the behavior of a material when subjected it to the action of chemical agents

• the behavior of a material when subjected to heat or electric current

• the behavior of a material when subjected to the action of water

• the behavior of a material when subjected to the action of wind

A chemical property is...

• the behavior of a material when we subject it to the action of chemical agents

• the behavior of a material when we subject it to heat or electric current

• the behavior of a material when we subject it to the force of wind

• the behavior of a material when we subject it to the force of water

When we design an object we have to

• draw only a 3D plan

• draw a sketch because is the only thing that we need

• draw only a preliminary plan

• draw a sketch, preliminary plans and plans

The construction plan is necessary part of our project. This part is

• important because we have to know what materials and tools we will be using, as well as the steps we need to follow in order to build the instrument.

• a way to identify materials, tools and steps that we have to follow.

• where we evaluate the result of our project

• where we represent our design

When we evaluate the result of our project

• we have to design the object

• we have to identify the materials that we need

• we have to test our design in order to know if it works properly

• we have to identify the tools that we need