1. RACE and Cl-Ev-R Strategies
Science
TRMS

2. Using the RACE and Cl-Ev-R Strategy
Cl-Ev-R

3. Question (from Floating Log Assessment Probe)
How does a larger log float compared with the smaller log cut from the same tree?
Explain your thinking.

4. Restate the Question
How does the larger log float compared with the smaller log? Explain your thinking.
R: The larger log will float ½ above the water and ½ below, just like the smaller log

5. Answer the Question
The answer can be in the same question as the restate
R/A: The larger log will float ½ above the water and ½ below, just like the smaller log, because they both have the same density

6. Cite evidence Use facts and examples Can have more than 1
Can be from in school or out of school experiences
Labs/demos
Valid science resources (textbook, other books, magazines, websites, etc)
Videos (Discovery, Brain Pop, YouTube, Bill Nye, etc)
Things observed in nature

7. Cite evidence 1 piece
R/A: A larger log will float ½ above the water and ½ below, just like a smaller log from the same tree, because they both have the same density
C: When we determined densities of objects of different shapes, the densities were the same. A cube of copper was the same as a cylinder of copper

8. Cite evidence 3 pieces
R/A: The larger log will float ½ above the water and ½ below, just like the smaller log, because they both have the same density
C1: When we determined densities of objects of different shapes, the densities were the same. A cube was the same as a cylinder
C2: When Mrs Lockwood showed us the demo of a piece of wood floating in water, the smaller piece and the larger piece floated the same
C3: When we did density math problems, we saw that Density is mass divided by volume

9. Explain your response Elaborate on your evidence
Don’t just repeat the claim/evidence
Is there a rule or science principle to support your reasoning?
Explain why your evidence supports the claim
Are there concepts/ideas you learned in Science to support your reasoning

10. Explain (1 explanation)
R/A: A larger log will float ½ above the water and ½ below, just like a smaller log from the same tree, because they both have the same density
C: When we determined densities of objects of different shapes, the densities were the same. A cube of copper was the same as a cylinder of copper
E: Density if a physical property of matter and objects have unique densities, so a larger log will have the same density as a smaller log from the same tree (and float the same)

11. Explain your response (2 explanations)
R/A: The larger log will float ½ above the water and ½ below, just like the smaller log, because they both have the same density
C1: When we determined densities of objects of different shapes, the densities were the same. A cube was the same as a cylinder
C2: When Mrs Lockwood showed us the demo of a piece of wood floating in water, the smaller piece and the larger piece floated the same
C3: When we did density math problems, we saw that Density is mass divided by volume
E1: The density of a smaller log is the same as a larger log, because the ratio of mass to volume is the same
E2: Density is a physical property of matter and objects have unique densities, so a larger log will have the same density as a smaller log of the same material (and float the same)
E3: Density is M/V