The ‘Domain of Knowledge’ for this learning experience is the Periodic Table of Elements in general. The main concept for this unit will be discovering that this table does exist, why it is necessary, and how it can be useful. Specifically, this lesson will look at the trends of the Periodic Table of Elements.
This lesson is important for everyone to learn because it teaches the student more about the world around them. It is crucial to learn science because one day this knowledge may be useful. For example, you’re a marketing major looking for a job and there’s an opening at a paint company you will be able to sell that paint much easier if you are able to discuss intelligently with the research chemist about the product you are trying to sell. Also it is important to learn about many different topics so that you are a well-rounded person.
Dmitri Ivanovich Mendeleev (1834-1907) was also known as the ‘father of the Periodic Table, started out by creating a card for each of the 63 known elements. Each card contained the element's symbol, atomic weight and its characteristic chemical and physical properties. When Mendeleev arranged the cards on a table in order of ascending atomic weight grouping elements of similar properties together the periodic table was formed. From this table, Mendeleev developed his statement of the periodic law and published his work On the Relationship of the Properties of the Elements to their Atomic Weights in 1869. From this periodic table, many trends in the chemical and physical properties of the elements are able to be seen based on column, row, and sometimes even diagonal trends.
There are many projects that are able to be made from the periodic table, for example: Periodic Table bingo, presentation on your favorite element which could include making that element into a ‘superhero’ and creating a comic strip based on that character. Discussion is a key tool for this learning experience since these trends will be completely new concepts so after watching videos or reading about the trends in their text book, whole class discussions would initially benefit everyone the most.
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