Monday, September 10th Entry Task

Answer the following questions using full sentences, IQIA (Include the Question In the Answer)1.Explain what an observation is2.Make an observation about something in this class3.Explain what an inference is4.Make an inference about something in this class

Schedule:• Observations and inferences

Homework:• Anything not finished in

class

Objective: •I can tell the difference between an observation and an inference

Please have on your desk:• Supplies to be checked• Lab safety contract parent

signature sheet• TMNT Lab Safety Worksheet

Observations and Inferences Terms

• Observation- act of noting and recording an event, characteristic, behavior or anything else detected with an instrument or with the senses– Qualitative observations- descriptions of sights,

sounds, smells and textures– Quantitative observations- expressed in numbers

and include records of time, temperature, mass, distance and volume.

• Inference- logical conclusion drawn from available evidence and prior knowledge. Attempt to explain what we see.

Tuesday, September 11th • Entry TaskShare with your neighbor

your observations and inferences worksheet from last nights homework. You both should discuss the answers that you had in common and you should point out ones that you may have missed. Write down at least two similar answers and one different answer in your notebook.

Schedule:•Hypothesis•Identifying Variables

HomeworkHypothesis and Variables WS

Objective: •I can understand how to write a hypothesis•I can understand how to identify variables

Please have on desk:Observations and Inferences WS

Hypothesis Terms

– Hypothesis: An explanation for an observation phenomenon

– ALWAYS form a hypothesis in an “IF, …….. THEN, …….. BECAUSE……..” statement

Variables Terms

– Manipulated Variable: What you are changing

– Responding Variable: What your result is-the change you see/measure

– Controlled Variable: What you are keeping the same

Homer notices that his lawn has lots of weeds. His friend Barney tells him that Baking Soda will get rid of the weeds. Homer decides to try this out by spraying the right half his lawn with Baking Soda. He continues to simply leave the left half of his lawn alone. Both sides of the lawn get the same amount of sunlight and both receive 50ml of water every other day. Homer runs the experiment for 3 days and then counts how many weeds are in each half of his lawn.

Identify the following:• Manipulated Variable: • Responding Variable: • Controlled Variables: (give me 3)

My brother thought that if he ate McDonalds for every meal for thirty days that his weight would go up because McDonalds meals are high in calories. He weighed himself every morning all thirty days and afterwards compared his weight with his weight before the experiment.

Identify the following:• Manipulated Variable: • Responding Variable: • Control Variable:

Joe thought his new Nike shoes made him run faster. He decided to test his idea. He measured out 100 meters at his local park, and had a friend time him as he ran 100 meters ten times in his old shoes, and ten times in his new shoes. Joe also waited 2 minutes between each run to catch his breath.

Identify the following:• Manipulated Variable: • Responding Variable: • Controlled Variables: (give me 3)

Thursday, September 13th

Entry Task1. Create a hypothesis for each of the following problemsProblem: Is Diet Coke really “Diet”Problem: Does a plant need light to grow2. What are the 3 variables in an experiment?3. Identify the 3 variables for the following problem: Does fertilizer make a plant grow bigger?

Schedule:•Oreo cookie Lab

Objective•I can understand how to design a lab using the scientific methodHomework: •Figure out a way to create a graph to represent your data from lab. Do this in your notebook.

Please have on desk:•Hypothesis Worksheet

Double Stuff Oreos Double Stuff Oreos

VSVS

Regular OreosRegular Oreos

• The purpose of this experiment is The purpose of this experiment is to see if double stuff Oreos are to see if double stuff Oreos are really double stuffed.really double stuffed.

• IFIF double stuff Oreos are truly double stuff Oreos are truly double stuffed double stuffed THENTHEN the double the double stuff Oreo will have twice the stuff Oreo will have twice the amount of “stuff” than a regular amount of “stuff” than a regular Oreo Oreo BECAUSEBECAUSE the company the company has machines that can fill the has machines that can fill the Oreos exactly and the company Oreos exactly and the company isn’t allowed to lie.isn’t allowed to lie.

• Manipulated:Manipulated: Type of Oreo – double stuff or regular.Type of Oreo – double stuff or regular.

• Responding:Responding: The mass of the stuff.The mass of the stuff.

• Controlled:Controlled: The balance used.The balance used.Oreo brandsOreo brands

• 1 double stuff Oreo1 double stuff Oreo

• 1 regular stuff Oreo1 regular stuff Oreo

• BalanceBalance

1.1. Gather materials.Gather materials.

2.2. Carefully twist off one side of the Carefully twist off one side of the cookie from both Oreos.cookie from both Oreos.

3.3. Measure the mass of the cookie with Measure the mass of the cookie with no filling on it for both cookies using no filling on it for both cookies using the balance. Record in data table.the balance. Record in data table.

4.4. Measure the mass of each cookie with Measure the mass of each cookie with the filling on it using the balance. the filling on it using the balance. Record in data table.Record in data table.

5.5. Calculate the mass of Calculate the mass of stuffstuff by by subtracting the cookie mass from the subtracting the cookie mass from the cookie + cookie + stuffstuff mass. mass.

6.6. Repeat steps 1-5 twice to have 3 trials Repeat steps 1-5 twice to have 3 trials totaltotal

Friday, September 14th

Entry Task

Get out your “how to write a lab report” worksheet. Please read over the remaining sections that we did not get to yesterday. (Data Table Conclusion). Pay special close attention to the conclusion because you will be doing this on your own later today and will need to know how to do it.

Schedule:Oreo Cookie- Lab Data Collect, Analysis and Conclusion

Homework:• Final Lab Report-due

Monday

Objective: •I can collect data and understand how to analyze data and make a scientific conclusion

Type of Type of cookiecookie Trial #Trial # Mass of Mass of

cookiecookie

Mass of Mass of cookie + cookie +

stuffstuff

Calculated Calculated mass of mass of

stuffstuff

RegularRegular 11 gg gg gg

22 gg gg gg

33 gg gg gg

Double Double

StuffStuff11 gg gg gg

22 gg gg gg

33 gg g g gg

Graph

ConclusionUse these guidelines to write your conclusion in paragraph form.

DO NOT USE THE WORDS “YOU”, “WE”, “I”, “IT”, “MY”, ETC!

• What was the purpose of the experiment? • How does the data answer the question from the problem

statement? • Give examples from the data to support what the answer is – USE

NUMBERS! • State whether the hypothesis was supported by the data. • Give a different example from the data to explain whether the

hypothesis was supported or not – USE NUMBERS! • What were possible sources of error in this experiment? • Give 2 to 3 specific examples of possible error from the experiment. • Summarize what was learned and what the results support.