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Drill: Write 8.3 x 106 in standard form.

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Presentation on theme: "Drill: Write 8.3 x 106 in standard form."— Presentation transcript:

1 Drill: Write 8.3 x 106 in standard form.
Express in scientific notation

2 Objective: SWBAT identify independent and dependent variables and steps of the scientific method in order to sequence an experiment on nutrition.

3 THE SCIENTIFIC METHOD A universal approach to solving problems and answering questions in the world.

4 STEPS OF THE SCIENTIFIC METHOD: Define the problem
Do background research Formulate a hypothesis (educated guess) Experiment A. Control Group B. Experimental Group 5. Observe and measure (collect data) 6. Analyze and draw a conclusion 7. Application

5 EXPERIMENT EXPERIMENTAL GROUP: exposed to the independent variable
CONTROL GROUP: normal conditions, without the variable

6 • VARIABLE – a factor that can change
2 TYPES OF VARIABLES A. INDEPENDENT VARIABLE B. DEPENDENT VARIABLE

7 independent variable: variable that is manipulated or changed by the scientist
dependent variable: variable that depends on the influence of the independent variable

8 “Controlled Experiments” Worksheet
work with your partner and read each scenario and identify: Independent variable Dependent variable Experimental Group Control Group Constants

9 Lab Safety

10 Microscope Eyepiece, ocular Body Tube Revolving Nosepiece Arm Stage
Objective Lens Low power and High power Stage Stage Clips Coarse Focus Diaphragm Fine Focus Light Distribute microscope handout, have students fill out the parts they know, then have them come up to elmo to go over parts. Use this slide, to make sure everyone has the correct answers. Base

11 Calculating Magnification
To calculate the total magnification Eyepiece X Objective lens 10x multiplied by 4x Magnification = 40x

12 Calculating Magnification
Ocular Lens Objective Lens Total Magnification 10x 4x 40x 40x 100x 400x

13 Field of View Low power: See more of the specimen, but in less detail
High power: See less of the specimen, but in more detail Draw a hypothetical Field of View on the board and have the students tell you how many organisms can fit it there and how long a particular organism is.


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