Friday the 13th • OPENER: Scientific Thinking Cycle • Pick up one envelope for each table group. • Place the steps in a logical sequence as a table group • Check with Ms. Russell when finished • If correct draw the cycle in your notebook using arrows Freaky Friday the 13th! Superstitious??? Here are some ways to avoid bad luck: Cross your fingers Avoid black cats Throw salt over each shoulder don’t look at the full moon through a pane of glass Touch a piece of wood
Today: • PPT Notes on Nature of Science • Check-in Quiz • 2nd Period- Stop and start quiz at 9:15 • 3rd Period- Stop and start quiz at 10:20 If time, work on completing the CCD chart as a class. Homework: Complete CCD Chart: Nature of Science for Monday
9.17.13 OPENER: Aurora Borealis (page 6) Scenario: You are cross country skiing in Northern Canada and you come across this beautiful scene in the sky. -Write down as many observations as you can of the image. -Based on your observations, what factors contribute to the formation of an Aurora Borealis?
9.18.13 • TURN IN LAB SAFETY CONTRACT • Open notes to observation lab (p. 8 or 10) • Today: • Complete observation lab activity • Peer assess & report to Ms. Russell • Complete PPT C-notes • Read & Summarize “Just a Theory” article
9.19.13 OPENER: Collecting & Analyzing Data List at least 2 methods that can be used to collect data. Using the data below what trends (patterns) do you see?
“Just a Theory” Article • Preview the article (photos, blurbs, layout) • Read the article • Re-read the article & mark the text: • Underline important information • Circle difficult words • Write your thoughts in the margin
Common summary mistakes… Students will write their ideas/opinions about the article Students will plagiarize the reading Students will change the meaning to match their opinion
Group summary sentence • Make a list of the most important information in the paragraph • Leave out nonessentials…details • Write one sentence that includes all of the relevant information in your paragraph • Decide who will share your summary to the class.
Whole Article Summary 1: 2: 3: 4: 5: 6: 7: 8: 9:
Pre-assessment Do your best to show what you already know! There is no right or wrong its just a point to grow from.
How are Cornell Notes useful? • Generate your own questions • Create Topic Headings • Review material through summaries • Mark the text on right side • Add information after class (leave space) • Quiz yourself on information
The Nature of Science C- Notes
What is Science? What is science? Whatcontributions has science made to our society? • What would the world be like without those contributions? • How has science improved your life? • Science is an organized way of using evidence to learn about the natural world.
What is a theory? • explain a wide range of observations and experimental results • supported by a wide range of scientific evidence • can change based on new evidence
What is the Scientific Method? • set of steps that help us investigate a problem Steps include: • Observations • Question • Research • Hypothesis • Setting up Experiment • Gathering Data • Analyzing Data • Conclusion
Making Observations • Observational studies allow scientists to describe a phenomenon.
Posing a Question • Experiments are designed to answer questions or solve problems that you observe with your senses • The questions must be about the natural world and you have to be able to answer it scientifically • E.g. You wonder why your flowers are dying. • Pose in question form: Why are my flowers dying?
Making a Hypothesis • A Hypothesis is a logical prediction about the outcome of an experiment • Based on a set of observations and previous knowledge or experience • You may want to do some research before making a hypothesis • must be testable through observations • If…then…because statement • E.g. If I move my flowers in direct sunlight, then my flowers will stay alive longer because they use the sunlight in photosynthesis.
Planning the Experiment • Procedures describe what you plan to do to test your hypothesis in a step-by-step way • Begin by identifying the: • Manipulated variable (independent)- the factor you will purposely change • Responding variable (dependent)- the factor you predict will change as a result of the manipulated variable
Planning the Experiment • Identify a list of materials needed • Identify control variables • What are the other variables that might affect the outcome of your experiment? • E.g. time, type of materials, amount of materials, temperature, etc. • Writing operational definitions: • Define key terms for clear meaning • This allows others to repeat and test your experiment • E.g. “staying alive longer” will be defined as living past 4 days.
Collecting Data • Observe using one or more of the senses • Quantitative observations involves numbers • E.g. There are 15 deer per acre • Qualitative observations involve some judgment or interpretation • E.g. The bear was brown in color • Information gathered in this way is called evidence or data
Analyzing the Data • Interpret the data by • Make tables, graphs, and charts • Look for trends and patterns • Make one or more inferences from your data and then compare it with what you already know. • E.g. If flowers in both groups (control and manipulated) stayed alive for 4 days, then they both lived longer for the same length of time.
Inferences vs. Observations • Observation: “the grass on the school’s front lawn is wet.” • Possible inferences:
Inferences vs. Observations • Observation: “The school’s fire alarm is going off.” • Possible inferences:
Making Conclusions • In science this means: making a statement that summarizes what you have learned from your experiment • Revisit your original problem. Try to answer it. • Compare your interpretations with your hypothesis. • Was your hypothesis proven or disproven? • Provide support for your conclusion by explaining high and low data points. • Were their errors or mistakes? Explain. • How can you improve this experiment?
Observation Lab Activity • Title your provided data table • Read both sheets at the station (start with sheet with picture) • Follow directions & record data in provided data table • Answer the question beneath data table in notebook
Scientific Method • http://my.hrw.com/hssc_2012/hmd_na_bio/nsmedia/visualconcepts/80002.htm