CER Day 2

A Review and Now a Science Example

Multiple Choice

A claim is

• a kind of shellfish often used in chowder soups

• a statement that answers the question

• a fact

• an explanation that supports the facts

Multiple Choice

Evidence is

• a statement or conclusion that answers a question

• an explanation that connects the claim to the evidence

• not necessary if making a claim

• data that supports the claim

Multiple Choice

Reasoning is

• an explanation that connects the evidence to the claim

• a statement of conclusion that answers the orginial question

• data that supports the claim

• qualitative evidence

Multiple Choice

True or False: Details from a photo can be used as qualitative evidence.

• False

• True

Multiple Choice

Which of the following is an acceptable claim?

• Skittles are better than Starbursts because they have more sugar.

• I think Skittles are the best candy ever.

• Most students like Sour Skittles because they taste tart.

• Twizzlers is the most popular candy.

Multiple Choice

1.Air is matter. 2.We found that the weight of the kickball increased by 260 grams each time we pumped more air into it. 3.This shows that air has mass, which is one of the characteristics of matter.

Which sentence # is the claim?

• 1

• 2

• 3

• None of them

Multiple Choice

1. Air is matter. 2. We found that the weight of the kickball increased by 260 grams each time we pumped more air into it. 3. This shows that air has mass, which is one of the characteristics of matter.

Which sentence is the evidence?

• 1

• 4

• 3

• 2

Multiple Choice

1. Air is matter. 2. We found that the weight of the kickball increased by 260 grams each time we pumped more air into it. 3. This shows that air has mass, which is one of the characteristics of matter.

Which type of evidence is given?

• Qualitative

• Quantitative

Multiple Choice

1. Air is matter. 2. We found that the weight of the kickball increased by 260 grams each time we pumped more air into it. 3. This shows that air has mass, which is one of the characteristics of matter.

Sentence #3 is an example of:

• Claim

• Evidence

• Reasoning

Multiple Choice

The Vikings are the best NFL team.

• Claim

• Evidence

• Reasoning

Multiple Choice

The Minnesota Vikings currently have 6 wins and 2 losses.

• Claim

• Reasoning

• Evidence

Multiple Choice

When the Vikings play out of town, most of the crowd is wearing purple (Vikings color).

• Qualitative Evidence

• Quantitative Evidence

• Reasoning

• Claim

Multiple Choice

Which of the following is an acceptable piece of REASONING?

• Minnesota Vikings are above the Packers and the Bears in the NFC North Ranking.

• With only two losses so far this season, the Vikings have risen to the top of the NFC North.

• The Chicago Bears are terrible this year.

• The Viking's ticket sales have risen 42% this season.

Multiple Choice

The Viking's ticket sales have risen 42% this season.

• Qualitative Evidence

• Quantitative Evidence

Multiple Choice

Which of the following is an example of quantitative evidence?

• My cilantro plants grew taller when I moved them out of the sun.

• My cilantro plants got too much sun.

• My cilantro plants grew two inches taller when they were out of direct sunlight.

• The leaves on my cilantro plants were much healthier looking when I took them out of direct sunlight.

​Imagine you are snorkeling on a coral reef where you can see many species living together. Some animals, like sharks, are predators that eat other animals. Other species, like anemones and the fish that live in them, are mutualists and protect each other from predators. There are also herbivores, like urchins, that eat plants and algae on the reef. All these species, and many more, need the coral reef to survive.

​Corals are the animals that build coral reefs. They are very sensitive and can be hurt by human activity, like boating and pollution. Coral reef ecosystems are also in danger from warming waters due to climate change. Sarah is a marine biologist who is determined to figure out ways to save coral reefs. Sarah wants to understand how to help the dying corals so they can keep building important and diverse coral reef habitats.

​Corals compete with large types of algae, like seaweed, for space to grow on the reef. If there is too much algae, corals will have no place to attach and grow. Sea urchins are important herbivores and one of the species that like to eat algae. Sarah thought that when urchins are present on the reef, corals will have less competition from algae for space, and thus more room to grow. Maybe adding urchins to a coral reef is a way to help!

Multiple Choice

True or False: Corals are animals that build coral reefs.

• True

• False

Multiple Select

Why are coral reef ecosystems in danger?

• warming waters due to climate change

• human activity

• boating

• pollution

Multiple Choice

True or False: Algae compete with corals for space to grow on the reef.

• False

• True

Multiple Choice

Why are urchins important?

• Urchins eat algae

• Urchins eat corals

• Urchins compete with corals

• Urchins are not really that important

​To test her idea Sarah set up an experiment. She set 8 bins out on the reef. Into half of the bins, Sarah added urchins. She left the other half without urchins as a control. Sarah put tiles into all of the bins. Tiles gave an empty space for coral and algae to compete and grow. After a few months, Sarah looked at the tiles. She counted how many corals were growing on each tile.

Question: How does the presence of urchins affect coral growth? (write on paper)

Multiple Choice

Which of the following is an acceptable CLAIM?

• I think corals will grow more if urchins are present.

• Corals will grow more if urchins are present because the urchins eat the coral.

• Corals will grow more if urchins are present because the urchins eat the algae that compete with the corals.

• Corals will grow more if urchins are present.

On the next slide, I will present you with Sarah's data.
In two of the 'evidence' boxes, write down two pieces of quantitative data that you will use to support the claim.

​

​EVIDENCE

Multiple Choice

Would it be possible to find qualitative evidence for Sarah's experiment?

• Yes, look for photos she took of the bins.

• No. Not a chance.