Objective:
To stress and reinforce the importance of mineral structure.

Standards:
Properties of Earth Materials (physical and chemical properties of rocks and minerals).

Materials:
Sixteen Lego pieces of the same color and shape, two students.

Procedure:
Give eight Lego blocks to a student on one side of the room and give the other eight to another student [...]

Project Ideas
How electroplating and electrotyping are done.It will be recalled that in the gravity cell, in which there was a solution of copper sulphate, a layer of copper was deposited on the copper electrode.By this process the electrode was really copper-plated.Copper plate some object such as a piece of tin or nickel as follows.
Copper [...]