Scientific Method Intro. Song
Dec 30, 2015
Scientific Method
Intro. Song
(Science starts with what?)AN OBSERVATION!!!
And from these observations….we form ____________ and design experiments to find
out more. QUESTIONS
• Which way does buttered toast fall?
• Do you get more wet walking or running in the rain?
• Can chatting on a cell phone while pumping gas start a fire?
• Can a penny dropped off of a skyscraper kill a pedestrian? (what about a bullet shot into the air?)
• Can a singer really break glass with his/her voice?
ACTIVITY 1:
OBSERVATION SKILLS
Clue Video Clip
Basketball Video Clip
ACTIVITY 2: Writing detailed observations….
(Brainstorm the five senses) Write one observation about this classroom for each of the 5 senses.
(what do you already know?)
I= _______________
• Gather _______________ about your topic
• Use Internet, books, interviews...but also make _____________________
______________ -using 5 senses to make an observation…only stating known facts (NO OPINIONS)
INFORMATIONinformation
objective observations
OBJECTIVE
H = _____________
• An _____________ about a ___________ relationship
HYPOTHESIS
educated guesscause/effect
• Must be testable with measurable results
“Fenders on a bicycle will keep the rider more dry when riding through puddles.”
EXAMPLE OF A HYPOTHESIS:
Sometimes stated using “IF….THEN…” statements
E = ___________________
• Test the _________________
EXPERIMENT (procedure)
HYPOTHESIS
“Fenders on a bicycle will keep the rider more dry when riding through puddles.”
2 groups in an experiment…
EXPERIMENTAL CONTROL
Change the ONE variable being tested
Used to compare results…All other variables kept the same
WHAT ARE THEY?
Practice #1:
Hypothesis- “Maple leaves change color in the fall because light exposure decreases”.
Between the experimental and control group:
1. What factors MUST stay the same? (think of 10 or more)
2. What is the ONE (and only) factor that should differ?
Practice #2:
Hypothesis- As the temperature of a “glowstick”increases, the light intensity increases.
Between the experimental and control group:
1. What factors MUST stay the same? (think of 3 or more)
2. What is the ONE (and only) factor that should differ?
R = ________________RESULTS (record data)
Time
Distance between each tick
Time Total Distance Avg. Velocity
(tick) (cm) (seconds) (cm) (cm/s)
1
2
3
1. DATA TABLES -
• DO NOT FORGET UNITS!
• Be consistent with # of decimal places
GRAPHS: 3 types
1. BAR GRAPH - displays counted data
2. PIE (CIRCLE)-displays percentages (out of 100%)
3. LINE GRAPHdisplays a relationship (connection)
between 2 variables
C = ______________
• Restate the ___________
CONCLUSION
• Does the data support or reject the _______________? (analyze the results)
• Reasons for ________
(NOT “HUMAN” ERROR!)
PURPOSE
HYPOTHESIS
ERROR
R = _______________RETEST, REPEAT
In reality, science involves trial and error and often
DOES NOT follow this rigid
format! This flow chart is a guideline.
1. SODA AND MENTOS:
What do you know (prior knowledge)?
Piece of lined paper in Lab/Activity Section:
DO NOT SAY ANYTHING!
FOLD PAPER…(listen to directions)
Mentos and Soda Video Clip
Demonstration
2. SODA AND MENTOS:
What did you observe? (Be DETAILED and OBJECTIVE)
3. SODA AND MENTOS?
Hypothesize. Why did this happen?
4. SODA AND MENTOS: What variables are tested? Explain the findings.
Mythbusters Explain it All!