Graphing
The axis for the independent variable
What is the X-Axis
This is the base metric unit for length.
What is a meter?
This is the variable the scientist purposely changes or manipulates.
What is the independent variable?
This part of a CER is a one-sentence answer to the question
What is the claim?
information gathered using your five senses
What is an observation
The type of graph that is best for showing change over time
What is a line graph?
This is the base metric unit for Volume
What is a Liter?
This is the variable that is measured or observed to see the result
What is the dependent variable?
This part of the CER should include specific numbers or observations from data or research
What is the evidence?
When you sort objects into groups based on shared characteristics?
Classification
This type of graph is best for comparing separate categories, like the number of each kind of bird seen at a feeder.
What is a bar graph?
This is the number of mL in one Liter
What is 1,000 mL?
These are the factors kept the same in every trial so the test is fair
What are controlled variables?
This part of the CER should include the background knowledge and science concepts
What is the Reasoning?
"It looks like it will rain today"
What is a prediction?
A student's y-axis is labeled 0, 5, 10, 50, 100. What is wrong with it, and why does it matter?
The intervals are not equal, so the data looks distorted and the graph is misleading
This is the number of meters in 3.5 kilometers
What is 3,500 meters?
A student wants to know if the temperature of water affects how long it takes sugar to dissolve. She tests water at 10°C, 30°C, and 50°C. Which is the independent variable and which is the dependent variable?
IV: water temperature
DV: time for the sugar to dissolve
A student claims, "Plants grow taller with more sunlight." Which is the strongest evidence? A) "I think sunlight is good for plants." B) "Plants are green." C) "The plant in 8 hours of sunlight grew 12 cm, while the plant in 2 hours grew 3 cm."
C. It uses specific data from the investigation.
A is an opinion, and B is a fact that doesn't support the claim
Using prior knowledge to draw a conclusion
What is an Inference?
A pie graph shows how 40 students get to school: 50% ride the bus, 25% ride in a car, 15% walk, and the rest bike. How many students bike?
4 students. The percentages in a pie graph must add up to 100%, so 10% bike, and 10% of 40 is 4
This is the number of milligrams in 1 kilogram.
What is 1,000,000 mg?
Maria tests whether the amount of fertilizer affects plant height. She uses the same pot size, water, and sunlight for each plant. Name the IV, the DV, and one controlled variable.
IV: amount of fertilizer.
DV: plant height.
Controlled: pot size, water, or sunlight
Claim: Salt water freezes more slowly than fresh water. Evidence: Fresh water froze in 2 hours, but salt water was still liquid after 4 hours. Which is the best reasoning?
A) "Salt water froze more slowly because it took longer to freeze."
B) "The salt particles get in the way of water particles locking together into ice, so salt water has to get colder before it freezes."
C) "The ocean is salty, and I've never seen it freeze."
D) "Salt water is heavier than fresh water."
B. It explains why the evidence supports the claim using a science idea.
A just repeats the claim, C is a personal opinion and not true (oceans do freeze near the poles), and D is a fact that doesn't explain freezing
What is precise but not accurate?