CEI Writing Structure

A Basic Writing Structure for Science

*CEI: Claim, Evidence, Interpretation

PEA: Point, Evidence, Analysis

PEE: Point, Evidence, Explanation (Don’t forget to PEE every paragraph!)

MEAL: Main idea, Evidence, Analysis, Link back to main idea

 

How to Organize A CEI Paragraph

·         1st sentence - "C"
This is your CLAIM, the answer to the question

·         2nd sentence - "E"
This is your first piece of EVIDENCE. It should be a factual statement, simple and to the point.

·         3rd sentence - "I"
This is your first INTERPRETATION. Explain in detail how the piece of evidence answers the question. 

·         4th sentence - "E"
This is your second piece of EVIDENCE. It should be a factual statement, simple and to the point.

·         5th sentence - "I"
This is your second INTERPRETATION. Explain in detail how the piece of evidence answers the question.

·         6th sentence - "E"

This is your third piece of EVIDENCE. It should be a factual statement, simple and to the point.

·         7th sentence - "I"
This is your third INTERPRETATION. Explain in detail how the piece of evidence answers the question

·         8th sentence - "C"

This is your CONCLUSION. Restate your claim and talk about how all three pieces of evidence backed up your opinion.

 

Insert your Information into Each Section

 

·       Question:  Can the exact ages of fossils be accurately determined?

·       C: We know the exact ages of fossils buried in rocks through tree rings, varves and radiometric dating.

·       E: Tree rings can be used to find the absolute dates of rocks since the rings of a tree develop for each wet and dry season so every two rings equal a year.

·       I: Wood can be “fossilized” to become petrified wood and this is often buried in rocks along with fossils, this confirms the dates of fossils that are up to 4000 years old.

·       E: Varves are layers of sediment that form rocks, this can date objects as old as 15,000 years.

·       I: If we know the age of the rock that a fossil is in, we know the age of the fossil.

·       E: Radiometric dating is calculating the decay of isotopes that are inside rocks.

·       I: Knowing the half life of these isotopes tells us when a rock was formed.

·       Conclusion: In conclusion, tree rings, varves and radiometric dating are tools used to know the absolute age of fossils buried within rocks.

 


Put all Sentences Together to form a Paragraph

Can the exact ages of fossils be accurately determined?

 

We know the exact ages of fossils buried in rocks through tree rings, varves and radiometric dating. Tree rings can be used to find the absolute dates of rocks since the rings of a tree develop for each wet and dry season so every two rings equal a year. Varves are layers of sediment that form rocks, this can date objects as old as 15,000 years. If we know the age of the rock that a fossil is in, we know the age of the fossil. Radiometric dating is calculating the decay of isotopes that are inside rocks. Knowing the half life of these isotopes tells us when a rock was formed. In conclusion, tree rings, varves and radiometric dating are tools used to know the absolute age of fossils buried within rocks.


Rubric

CEI component

Performance Indicators

 

 

0 points

1 point

2 points

self  grade

Peer grade

C: Claim

No claim statement

Claim statement is present but does not answer the question and does not briefly list the 3 pieces of evidence.

Claim statement is present and answers the question. Is in CSIQ. Contains a brief list of the 3 pieces of evidence.

 

 

1st E: Evidence

No 1st evidence statement

1st evidence statement is present but does give a piece of evidence that correctly answers the question.

1st evidence statement is present and gives a piece of evidence that correctly answers the question.

 

 

1st I: Interpretation

No 1st interpretation statement

1st interpretation statement is present but does give an explanation of the 1st evidence statement.

1st interpretation  statement is present and gives correctly explains the 1st evidence statement.

 

 

2nd E: Evidence

No 2nd evidence statement

2nd evidence statement is present but does give a piece of evidence that correctly  answers the question.

2nd evidence statement is present and gives a piece of evidence that correctly answers the question.

 

 

2nd I: Interpretation

No 2nd interpretation statement

2nd interpretation statement is present but does give an explanation of the 2nd evidence statement.

2nd interpretation  statement is present and gives correctly explains the 2nd evidence statement.

 

 

3rd E: Evidence

No 3rd evidence statement

3rd evidence statement is present but does give a piece of evidence that correctly  answers the question.

3rd evidence statement is present and gives a piece of evidence that correctly answers the question.

 

 

3rd I: Interpretation

No 3rdinterpretation statement

3rd interpretation statement is present but does give an explanation of the 3rd evidence statement.

3rd interpretation statement is present and gives correctly explains the 3rd evidence statement.

 

 

Conclusion: restatement of claim

No conclusion statement.

Conclusion statement is present but does not summarize the answer to the original question.

Conclusion statement is present and summarizes the answer with a brief list of the 3 pieces of evidence.

 

 

total out of 16

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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