Scientific Method REMINDERS: Be sure to bring your supplies every day to class! USE assignment sheet daily

REMINDERS:

Be sure to bring your supplies every day to class!

USE assignment sheet daily

Did you know… SPELLING counts (see vocab words). You must use your own words (or no credit). Neatness counts

SPELLING counts (see vocab words).

You must use your own words (or no credit).

Neatness counts

Scientific Method Foldable Purpose Research Hypothesis Experiment Graphs Conclusion

Purpose

Research

Hypothesis

Experiment

Graphs

Conclusion

Scientific Method—basic steps Purpose/problem —pick a question to be tested Research —collect information (Internet, interviews, books, etc.) Hypothesis —informed guess Experiment —test to collect data Analyze data —tables/graph/charts to compare your data Conclusion —suggest a final answer

Purpose/problem —pick a question to be tested

Research —collect information (Internet, interviews, books, etc.)

Hypothesis —informed guess

Experiment —test to collect data

Analyze data —tables/graph/charts to compare your data

Conclusion —suggest a final answer

Scientific Method (more details) Step 1: Posing the Question ????????????????? --also called purpose or problem --must be able to be answered by experimenting and measuring

Research --gather some information, observing, or using prior knowledge (maybe do some research---book, Internet, interviews, etc ) Hypothesis after you educated guess What do YOU think will happen? must be testable it’s O.K. if proven to be wrong

Research

--gather some information, observing, or using prior knowledge (maybe do some research---book, Internet, interviews, etc )

Hypothesis

after you educated guess

What do YOU think will happen?

must be testable

it’s O.K. if proven to be wrong

Design Controlled Experiment include detailed list of materials (include amount and type) step-by-step (with numbers) all steps must be well explained

Design Controlled Experiment

include detailed list of materials

(include amount and type)

step-by-step (with numbers)

all steps must be well explained

Variable (2 types)— more info later what is being changed ?? opposite of constants control used for comparison what’s left alone usually manipulated variable left out

Variable (2 types)— more info later

what is being changed ??

opposite of constants

control

used for comparison

what’s left alone

usually manipulated variable left out

Two types of variables : Manipulated also called independent variable the variable you change on purpose only ONE per experiment Responding also called dependent variable variable that changes because of manipulated variable usually what’s being measured during experiment

Manipulated

also called independent variable

the variable you change on purpose

only ONE per experiment

Responding

also called dependent variable

variable that changes because of manipulated variable

usually what’s being measured during experiment

Examples… (Id the 2 variables, constants and controls in each) Plants grow taller and stronger when given Miracle Grow fertilizer. Basketballs inflated with more air will bounce higher.

Plants grow taller and stronger when given Miracle Grow fertilizer.

Basketballs inflated with more air will bounce higher.

Conclusion — after collecting and interpreting data (1-2 paragraphs) Carefully examine the data/graphs Was your hypothesis correct? Did you get the results you expected? If not, make a new hypothesis (but do not replace your original hypothesis) Were there any unexpected problems that may have affected your results? (maybe human error) Make suggestions on how the experiment could be redone. What would you do differently next time?

Carefully examine the data/graphs

Was your hypothesis correct? Did you get the results you expected?

If not, make a new hypothesis (but do not replace your original hypothesis)

Were there any unexpected problems that may have affected your results? (maybe human error)

Make suggestions on how the experiment could be redone. What would you do differently next time?

(conclusion… continued ) Did you collect enough data (did you repeat the experiment enough times and have a large enough sample size)? What did you learn? Did you like doing this experiment? Why/why not? How would you improve this lab? SO WHAT ?????? How does this activity relate to the “real world”? How can you apply this to your life?

Did you collect enough data (did you repeat the experiment enough times and have a large enough sample size)?

What did you learn? Did you like doing this experiment? Why/why not? How would you improve this lab?

SO WHAT ?????? How does this activity relate to the “real world”? How can you apply this to your life?

1st Lab: “Salt Dissolving Race” Relate to the steps of the scientific method Do as a class as we go through the steps (250mL water, ½ tsp (2 ½ mL of salt) each container—hot, cold, room temperature Fill in 3 page lab sheet as we do this experiment together---refer to Lab Write-up Sheet

Relate to the steps of the scientific method

Do as a class as we go through the steps (250mL water, ½ tsp (2 ½ mL of salt) each container—hot, cold, room temperature

Fill in 3 page lab sheet as we do this experiment together---refer to Lab Write-up Sheet