Warm-Up Assessing Claims and Evidence - Edgenuity Inc.

Warm-Up Assessing Claims and Evidence

Lesson Objectives

By the end of this lesson, you should be able to:

? Identify the

made within a scientific text.

? Evaluate the

and

based on supporting evidence.

of scientific claims

? Assess the information.

of a variety of sources of scientific

Science Practice:

scientific writing.

W2K

Words to Know

Fill in this table as you work through the lesson. You may also use the glossary to help you.

a word describing the extent to which one factor

causal

or is the

of another; cause

reliable

and effect a word describing results that are measured over and over

when

valid

a word describing the extent to which a study or test conditions

are

and

and can be applied

to other cases

? Edgenuity, Inc.

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Instruction Assessing Claims and Evidence

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Lesson

Question

2

Scientific Claim

A scientific

is the

that what is presented is fact.

Claims should be based on

that is:

? from a

experiment.

? based on

trials.

How to Identify Scientific Claims

Underline the claims being made in this paragraph. In a recent study comparing Super Plant Food Formula to two other brands, there were some really important results about the amount of fruit grown. Plants fertilized once per week with Super Plant Food Formula have been shown to produce twice as much fruit as plants that are fed the other two brands. The fruit grown with Super Plant Food Formula is sweet and juicy. Super Plant Food Formula is inexpensive and will give you fruit that you will be proud to share with your neighbors.

? Edgenuity, Inc.

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Instruction Assessing Claims and Evidence

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Context for a Scientific Claim

Assessing a claim requires you to look at its

.

?

will the data be used?

? Who receives

from the claim?

? How does the claim

to you?

? Where did you read the

?

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Merit and Accuracy

? The

of a scientific claim depends on the

used

to collect the data.

? The way that data is

, through repeated,

tests, is an important measure of the merit and accuracy of the data.

?

review and

or double-blind studies are ways to

ensure the data can be

.

? Edgenuity, Inc.

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Instruction Assessing Claims and Evidence

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Causal Relationships

: The extent to which one factor produces or is the result of another;

and

? Showing that the data collected are a

of the

experimental condition means more confidence in the causal relationship.

? If there is no causal relationship, or if it is not clear that the results were

caused by one factor, the claim may be viewed as

in

or accuracy.

Scientific Claim about Ulcers

Scientific Claim:

?

, not stress and acid, were the cause of the ulcers.

Evidence:

? They discovered a bacteria near the ulcers in about

of patients.

? They gathered more data by

in the lab and on patients.

? Edgenuity, Inc.

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Instruction Assessing Claims and Evidence

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Data

: Related to showing consistent results when measured over and

over again

: The extent to which study or test conditions are related and controlled and can be applied to other cases

Sources of Scientific Claims

Sources of data:

?

did the data come from?

? What is the

of the source?

? Is the source an

on the subject?

If data are from trusted,

sources and results hold true in

tests, evidence supporting a scientific claim is

.

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