​Variables

​The INDEPENDENT variable is the thing that a scientist changes on purpose to see how it affects something.

​Example: The amount of water.

​

​The DEPENDENT variable is the thing that is affected, it's what we measure or collect data on.

Example: The size of plant, number of leaves, dead or alive.

​Control Variable

​A control or constant variable is something or things that stay the same (do not change) in order to make sure that the experiment is fair.

​

​Example: When measuring growth of a plant under different lights, you keep the type of plant, soil, and water amount the same.

​Testable Questions

• Can be observed by doing an experiment

• You collect facts / data from this experiment

• The question must CHANGE something to see how it affects something else

• Must have an independent and dependent variable​

• ​Must have something to CHANGE and MEASURE

​Observations and Inferences

​An observation is something you see happening. You don't have to guess about it. It is something that you know because you can see, feel, touch, taste or smell it. You observe that the tiger is orange

with black ​stripes.

​

​An inference is an educated guess about

what will or has happened. You can infer that this

tiger is going​ to eat you if you come closer, but

​you don't know for sure. It is a guess.

​Qualitative

​Observations

​Qualitative observations describe the qualities of something. These are observations you make using your five senses such as touch, taste, smell, sight and hearing.

​

​Example: A qualitative observation is that Nezuko's eyes are pink.

​Quantitative

​Observations

​Quantitative observations describe the quantities or the amount of something. These are observations that involve numbers.

​

​Example: A quantitative observation is that Nezuko has one hair bow and two eyes.

​CER

​​Claim: What I think the answer is.

​"My claim is..."

​

​Evidence: What I see in the problem that tells me this is the answer.

​"In the question, it says..."

​

​Reasoning: What the evidence means and how you know. DEFINE VOCAB HERE.

​"I know that ___ means..."

​Do Sketchers make you run faster than a Cheetah?

​On the next slide, you will write a CER about if Sketchers make you run faster than a cheetah.

​

​Remember that you must write in 3 complete sentences, and you must have a CLAIM, EVIDENCE from the commercial and REASONING behind why you know this.