ATOMIC THEORY:

INTERNET BASED LESSON PLAN

Goal:

The objective of this lesson is for students to become familiar with the historic and scientific development of atomic theory. They will recognize the beginnings of atomic theory with the ancient Greeks, and follow its changes through to modern wave theory. Studentswill also work in cooperative learning groups, and further develop their computer and internet skills.

Overview:

The class will discuss as a large group, how advances in technology require previous levels of discovery. Students will be informed that in their studies of atomic theory, they will discover that scientific theory also requires previous levels of theorization. In small groups, students will study atomic theory through use of the Internet. Each group will then select the one stage or scientist of atomic theory development it feels was the most significant in reaching current wave theory. Groups will then prepare a written report that defends their selection. Further studies can then be done on quantum studies, the role of the electron in bonding, radioactivity, atomic bombs, fusion, or fission.

Materials:

Computers with Internet Access.


INVITATION

Students will be engaged in a teacher led discussion regarding the development of technology. The discussion should focus on how technology relies on established levels of scientific discovery in order to advance. For example, students should be asked: "Why weren't cellular phones invented when regular phones were invented?", "Why weren't cd's around when 8-tracks were?", etc. Students will quickly contribute to these and other scenarios. Students should then be informed that the concept of cumulative development will then be applied to scientific theory as they study atomic theory. They will learn how reaching current atomic wave theory required the development of other scientific theories and discoveries.

EXPLORATION

Students will be divided into small groups in which they will work on this Internet based activity. Each group should proceed to following sites to learn about atomic theory development. Students should be encouraged to take notes and record the most significant information they encounter.

Each group should visit at least 3 of the following websites in order to research atomic theory. These sites contain summaries of atomic theory that provide excellent general perspectives on atomic theory. Groups should all answer the review questions included in the first website listed below.

Websites on Atomic Theory :

EXPLANATION

Having visited the sites on atomic theory, each group should select the one stage/ individual of atomic theory development it feels was the most significant in reaching current wave theory. Groups are then to conduct further research on the individual they have selected, by utilizing the respective websites listed below. All groups should visit the website on Modern/Wave Atomic Theory in order to complement their research. A written report is then to be prepared by each group. The report should contain a general summary of atomic theory, it should name the individual they have selected as the most significant, and should clearly state reason(s) that defend their selection. Reports should be turned in to the teacher, and as an time dependent option, groups can briefly present their report verbally before the class.

Democritus

Dalton

Thomson

Rutherford

Bohr

Modern / Wave Atomic Theory

TAKE ACTION

Further studies can be done on quantum studies, the role of the electron in bonding, radioactivity, atomic bombs, fusion, or fission. Also, the reports written by the groups could be united to create a study guide of atomic theory for younger grades or future use.

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