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MB CER Practice

Last updated almost 3 years ago
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Lesson 9: Evaluating Evidence About Bacteria

Objective: KWBAT gather and evaluate evidence from experiments and text to argue the effects of a fecal transplant on the human body.

Part 1: Warm Up

Read the following example of an argument based on what we have learned so far.. Then, respond to the questions below.

ARGUMENT:

Bacteria from the fecal transplant can fill up the space in the gut, limiting the food and space for invading harmful bacteria. One piece of evidence that supports this claim is that Patient 23’s case study showed that before the fecal transplant, the patient had low bacteria in his gut, and the bacteria included C. difficile. In week 9, after the fecal transplant, the patient had high bacteria in his gut and no C. difficile.
1

Identify the claim from the statement above. Copy the claim sentence as your answer!

1

Identify the sentence that discusses evidence. Copy the evidence question as your answer.

0

The statement is missing the reasoning part of the scientific statement. What would YOU write as the reasoning statement for the argument?

Reasoning is the explanation of how the evidence connects to the claim. So, your job is to make the connection between the evidence and the claim.

Sentence starter:
The evidence matters because...

Part 2

Part 2: Analyzing Experiments About Bacteria

So far, you’ve written an argument for MRI’s first subclaim. But the scientists at the Microbiome Research Institute think there are two more ways that a fecal transplant might help a patient.
Today, you’ll be gathering evidence to support one of the remaining two subclaims in order to find other ways that fecal transplants help patients.

In the experiment below, scientists bred mice with gut microbiomes full of only one type of bacteria. In this experiment, they used mice that had the very common B. fragilis bacteria in their gut microbiomes.

In order to make comparisons, the scientists also bred mice with no bacteria in their gut microbiomes.

0

Read through the experiment and Look at the Test Result Data.
How does B. fragilis bacteria in the gut microbiome affect mouse gut health?

Sentence Starters:
B. fragilis bacteria in the gut microbiome affect mouse gut health by......
I think the effect B. fragilis has is...

4

Categorize the four evidence cards below. Determine if they are Strong Evidence or Weak Evidence.

Here is the claim:
Subclaim 2: Bacteria from the fecal transplant can help the patient’s body produce immune cells that kill invading bacteria.

Hint: Which evidence cards support the claim? Which do not?

  • Strong Evidence

  • Weak Evidence

0

Which evidence card was the strongest at supporting the subclaim? Explain.

Sentence Starter:
I think evidence card _ was the strongest at supporting the subclaim because....

0

Which evidence card was the weakest at supporting the subclaim? Explain.

Sentence Starter:
I think evidence card _ was the weakest at supporting the subclaim because....

Finished?
Finished?

Please wait for instructions. You will need to complete MB 2.7 as a class.

While you wait:
  • READ
  • Legends of Learning: https://app.legendsoflearning.com/join/YXNzaWdubWVudC0xNzg5NDM3?google=true
  • Blooket: https://www.blooket.com/play?hwId=63175100ea9a84519ef0d2fd
  • Quizziz: https://quizizz.com/join?gc=46270205
Next Steps!
With Ms. Tashiro's permission, you will now complete MB 2.7.

The link to the assignment is on your RIGHT ------->
https://app.formative.com/formatives/5f6b80e04e7f1bce29b73586