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# Turn in syllabus, lab safety contract & TMNT lab review Quiz: Lab Safety Class Expectations PowerPoint PPT Presentation

09-09-13. Lab Safety Quiz Today!. Turn in syllabus, lab safety contract & TMNT lab review Quiz: Lab Safety Class Expectations. Please record today’s schedule & homework in your planner & answer the following on your early work sheet (IQIA).

Turn in syllabus, lab safety contract & TMNT lab review Quiz: Lab Safety Class Expectations

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09-09-13

Lab Safety Quiz Today!

• Turn in syllabus, lab safety contract & TMNT lab review

• Quiz: Lab Safety

• Class Expectations

• What are 3 safety rules that you should always follow in the science lab?

Do Now

Schedule

• None

Homework

09-09-13

Learning Objective

I will contribute to a safe, respectful, and effective learning environment.

09-10-13

• Finish Class Expectations

• Science Binder

• Observations & Inferences

• List 3 observations about the contents of our classroom.

Schedule

Do Now

• None

Homework

09-10-13

Learning Objective

I can explain the difference between qualitative & quantitative observations.

Observations & Inferences

Observation:

An act of noting and recording an event, characteristic, behavior, or anything else detected with an instrument or with the senses.

Qualitative observation:

[sights, sounds, smells, tastes, & textures]

Quantitative observation:

An observation that is expressed in numbers. [time, temperature, mass, distance, & volume]

Inference:

A logical conclusion drawn from available evidence and prior knowledge.

Qualitative

Quantitative

Inferences

09-11-13

• Procedures

• Explain the difference between qualitative & quantitative observations.

Schedule

Do Now

• None

Homework

09-11-13

Learning Objective

I can write a detailed procedure for a lab investigation.

Which of the following are observations

and which are inferences?

• A man was fishing from a dock.

• 2. The lighthouse is on land.

• 3. There is a tackle box on the dock.

• 4. A fish bit the dock.

• 5. A man was eaten by a fish.

Purpose/Problem Statement:

• Do double stuf Oreos actually have twice as much filling as a regular Oreo?

Materials:

• 1 double stuf Oreo

• 1 regular Oreo

• Triple-beam balance

• Ruler

• Calculator

Procedure:

• Gather lab materials.

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

• Measure the mass (g) of the cookie with no filling on it for both cookies using the balance.

• Record the number of grams in the data table.

Procedure:

• Measure the mass (g) of each cookie with the filling on it using the balance.

• Record the number of grams in the data table.

• Calculate the mass of filling by subtracting the cookie mass (g) from the cookie + filling mass (g).

• Record the difference (g) in the data table.

Procedure:

• Record the results from 3 other groups.

• Calculate the average mass (g) of filling and record this value in the data table.

• Clean up!

09-12-13

• Oreo Lab: Data Table, Variables, Hypothesis & Data Collection

• List 3 things that you need to include when writing a lab procedure.

Schedule

Do Now

• None

Homework

09-12-13

Learning Objective

I can correctly identify variables & write a hypothesis for a lab.

Got Stuf?

Regular Oreo Data

Double Stuf Oreo Data

Identification of Variables:

• Manipulated:

Type of Oreo – double stuf or regular.

• Responding:

The mass (g) of the filling.

• Controlled:

• Triple-beam balance

• Method used.

Hypothesis/Prediction

• Write a hypothesis using the IF, THEN, BECAUSE format.

• IF double stuf and regular Oreos are compared THEN the double stuf Oreo will have twice the amount of filling of the regular Oreo BECAUSE Nabisco isn’t allowed to falsely advertise their cookies.

09-13-13

• Oreo Lab: Analysis & Graphs

• What 3 key words must be found in a hypothesis?

Schedule

Do Now

• None

Homework

09-13-13

Learning Objective

I can analyze & graph the results of a lab.