CATEGORY

4

3

2

1

Organization

Information is very organized with well-constructed paragraphs and subheadings.

Information is organized with well-constructed paragraphs.

Information is organized, but paragraphs are not well-constructed.

The information appears to be disorganized.

Quality of Information

Information clearly relates to the main topic. It includes several supporting details and/or examples.

Information clearly relates to the main topic. It provides 1-2 supporting details and/or examples.

Information clearly relates to the main topic. No details and/or examples are given.

Information has little or nothing to do with the main topic.

Research

Group researched the subject and integrated 3 or more "tidbits" from their research into their letter.

Group researched the subject and integrated 2 "tidbits" from their research into their letter.

Group researched the subject and integrated 1 "tidbit" from their research into their letter.

Either no research was done or it was not clear that the group used it in the letter.

Mathematical Concepts

Explanation shows complete understanding of the mathematical concepts used to solve the problem(s).

Explanation shows substantial understanding of the mathematical concepts used to solve the problem(s).

Explanation shows some understanding of the mathematical concepts needed to solve the problem(s).

Explanation shows very limited understanding of the underlying concepts needed to solve the problem(s) OR is not written.

Mathematical Errors

90-100% of the steps and solutions have no mathematical errors.

Almost all (85-89%) of the steps and solutions have no mathematical errors.

Most (75-84%) of the steps and solutions have no mathematical errors.

More than 75% of the steps and solutions have mathematical errors.

Explanation

Explanation in the charts is detailed and clear.

Explanation in the charts is clear.

Explanation in the charts is a little difficult to understand, but includes critical components.

Explanation in the charts is difficult to understand and is missing several components OR was not included.

Neatness and Organization

The work is presented in a neat, clear, organized fashion that is easy to read.

The work is presented in a neat and organized fashion that is usually easy to read.

The work is presented in an organized fashion but may be hard to read at times.

The work appears sloppy and unorganized. It is hard to know what information goes together.