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Get out ISN we are taking notes over Scientific Method/Lab Write up Tutorials tomorrow morning for lab make-up and homework help 8am

Scientific Method/Lab Write up

An

orderly

and

systematic

way of solving a problem

1. PROBLEM



QUESTION

YOU ARE SEEKING AN

ANSWER

FOR

ALWAYS IN THE FORM OF A QUESTION.

 Does the amount of liquid affect the growth of plants?

 Does the type of liquid affect the growth of plants?

 Does the amount of light affect the growth of plants?

 Does the type of soil affect the growth of plants?

MUST BE ABLE TO ANSWER THROUGH EXPERIMENTATION

-RESEARCH

 COLLECT KNOWN INFORMATION  EXAMPLE: RESEARCH READ OBSERVE

-PREDICTION

 A

LOGICAL GUESS

OF AN OUTCOME

BASED ON DATA AND PRIOR KNOWLEDGE

. IF YOU HEAR THUNDER, YOU COULD PREDICT THAT IT WILL RAIN.

2. HYPOTHESIS



EDUCATED GUESS

TO ANSWER THE QUESTION  The more research, the better our hypothesis

Should be written in an “if- then” statement

 I think if the amount of light is changed, then the plant growth will be affected.

 I think if the type of liquid is varied, then the plant growth will change.  I think the type of fertilizer affects plant growth.

7 10 5 # Post 3

Face Book Activity

hypothesis Try to organize ---------

3. EXPERIMENT



PLANNED WAY SOLVING

OF A PROBLEM  WRITTEN AS STEPS  KNOWN AS PROCEDURE.

GIVING INSTRUCTIONS LAB

 Tell me how to make Peanut butter and Jelly Sandwich

GIVING INSTRUCTIONS

 Quick Write- Using 5 complete sentences, describe what happened and write what you learned

VARIABLE



FACTORS IN AN EXPERIMENT THAT

CHANGE

1. Independent Variable



M

- Manipulated 

I

- Independent 

X

- X axis  This is the variable that you are purposefully

changing.



YOU MAY ONLY HAVE 1 INDEPENDENT VARIABLE

2. Dependent Variable



D

- Dependent 

R

- Responding 

Y

- Y axis  This is the variable you are

measuring it will be recorded in your data!

CONSTANT

 FACTORS IN AN EXPERIMENT THAT A SCIENTIST PURPOSELY KEEPS THE SAME.

CONTROL



group that serves as the standard of comparison.

 Treated as the same as the samples, but not exposed to the independent variable

Write the procedure to make a peanut butter jelly sandwich. Be sure to write them in steps and

be specific!

4. DATA/ OBSERVATIONS

 COMPILE DATA 

INFORMATION

COLLECTED FROM EXPERIMENTS

-OBSERVATION

 DATA THAT YOU COLLECT THAT YOU CAN

PHYSICALLY

OBTAIN USING YOUR 5

SENSES

.

-INFERENCE

 LOGICAL INTERPRETATION BASED ON PRIOR

KNOWLEDGE

AND

EXPERIENCE

. IF SOMEONE IS WET, YOU COULD INFER IT IS RAINING OUTSIDE.

1.

2.

3.

4.

5.

6.

7.

8.

Observations vs. Inferences

The plant has roots.

The plant uses water.

The plant has leaves.

The plant has flowers.

The plant grew from a seed.

The plant is growing in soil.

The plant is green and yellow.

The plant is growing in a pot.

1.

2.

3.

4.

5.

6.

7.

Young people are playing basketball.

The players are in high school.

People are watching the game.

The score is tied.

The game is almost over.

The people are indoors.

There are 6 players

MYSTERY Diapers

 List 5 observations  (I see, I feel, I smell, etc)  List 5 inferences

PRECISION

 MEASURING WITH

ACCURACY

AND

EXACTNESS.

A MEASUREMENT OF 5.5CM IS MORE PRECISE THAN 5CM.

AVERAGING NUMBERS

 MANY TIMES SCIENTISTS WILL HAVE SEVERAL ANSWERS FOR A PART OF AN EXPERIMENT. The best method of dealing with this situation, is to average.

EXAMPLE OF AVERAGING



ADD

THE DIFFERENT ANSWERS TO REACH A TOTAL. THEN

DIVIDE

THE TOTAL BY THE NUMBER OF DIFFERENT ANSWERS.

GRAPH

 A PICTURE OF DATA NUMERICAL DATA

KINDS OF GRAPHS

 1. CIRCLE GRAPH A . DIVIDED CIRCLE B . SHOWS HOW A PART OF SOMETHING RELATES TO THE WHOLE VALUE.

BAR GRAPH

 HELPS YOU COMPARE THINGS SUCH AS – AMOUNTS or

QUANTITIES

LINE GRAPH

 A . LETS YOU PLOT SEVERAL DIFFERENT FORMS OF DATA.

 B . HELPS YOU SEE PATTERNS OR TRENDS.

TAILS Title:

Includes both variables

Axis:

IV on X-axis and DV on Y-axis

Interval:

The interval (4) is appropriate for this scale.

Label

: Both axes are labeled.

Scale:

Min and max values are appropriate.

Plant Growth time (days)

1 7 14 21 24 30

height (cm)

15 26 33 47 54 60

GRAPHING DEDUCTIONS

         Title (5) X & Y title (5) X label/ scale (5) Y Label/ scale (5) Start at zero (5) Straight lines (5) # increments (5) IV/ DV (20) Plot (20)

5. CONCLUSION



ANSWER

TO THE PROBLEM

THEORY



MOST LOGICAL EXPLANATION FOR EVENTS THAT HAPPENED

LAW

 A THEORY THAT HAS BEEN

TESTED

MANY TIMES AND IS GENERALLY ACCEPTED AS

TRUE.

REPLAY Conclusions

      R – restate the problem question E – explain what you did to test P – pull in the data L – look for patterns A – answer the problem question Y – yes or no to hypothesis (hypothesis correct? Why or why not?)