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C opy the schedule into your planners

C opy the schedule into your planners. If you have not handed in your safety contract, hand it in as soon as possible! We will have a lab THIS WEEK. No contract = no lab for you. Monday September 10 th. Remember to write the questions and your answers in your lab book. Do Now:

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C opy the schedule into your planners

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  1. Copy the schedule into your planners If you have not handed in your safety contract, hand it in as soon as possible! We will have a lab THIS WEEK. No contract = no lab for you.

  2. Monday September 10th • Remember to write the questions and your answers in your lab book. • Do Now: • 1. Why is the scientific method important? • 2. How can you tell independent and dependent variables apart?

  3. Why is the scientific method important? • You will use it all year in every one of your labs. • You will need to know the scientific method for all of your science classes in the future. • You will need to know and use the scientific method when you create your own experiment at the end of the year. • It can help you solve problems outside of school.

  4. Which variable means CHANGE? Independent Variable

  5. Which variable means MEASURE? Dependent Variable!

  6. By the end of class you will need to know the definitions of independent and dependent variables and be able to identify each variable in a scientific question.

  7. Your Do Now stuff from earlier Dependent Variable Independent Variable

  8. IV and DV Review Competition • One group member should get out a piece of paper and everyone should write his/her name on the paper. • With your group, identify the IV and DV in these scientific questions. • Each question is worth two points (one for IV and one for DV) • The winning group will get candy!

  9. 1. Will a solid or a liquid cause a greater chemical reaction? IV: solid/liquid DV: size of the chemical reaction

  10. 2. Do people wear more red during winter or summer? IV: winter/summer DV: how much red they wear

  11. 3. Does a chicken lay more eggs when it is hot? IV: temperature DV: number of eggs

  12. 4. Does blood pressure get higher when people play video games? IV: playing video games DV: blood pressure

  13. 5. Do old people get in more car accidents than young people? IV: age DV: number of car accidents

  14. 6. What minerals in soil cause plants to have brighter flowers? IV: minerals in soil DV: brightness of flowers

  15. Count up your points and give your paper to the teacher

  16. Exit Slip Time! • Label your note card with your FIRST AND LAST NAME, DATE, and HOUR. Labeling this correctly is worth one point. First and Last Name Date Hour 1. 2. 3. 4.

  17. Exit Slip • Clear everything off of your table. Close lab books and put them on the floor. • NO TALKING, at all. If you have a question raise your hand SILENTLY and wait for the teacher. • You can just write the letter of the answer.

  18. Question 1 • What is anindependent variable? • What is measured in an experiment • What is changed in an experiment • An educated guess • What is always kept the same in an experiment

  19. Question 2 • What is an dependentvariable? • What is measured in an experiment • What is changed in an experiment • An educated guess • What is always kept the same in an experiment

  20. Question 3 • What is the dependentvariable in this scientific question?: “Do Jordans or Nikes make you run faster?” • Type of shoe • How fast you run • If I wear Jordans, then I will run faster. • The track you run on

  21. Question 4 • What is the independent variable in this scientific question: “Does more sunlight make plants grow faster?” • How quickly plants grow • The type of plant • The amount of sunlight the plants get • How tall the plants grow

  22. Get your homework(Scientific Questions and Variables HW) • The homework is due TOMORROW.

  23. Tuesday September 11 or Wednesday September 12 Remember to write both the question and your answer. Do Now: • Identify the IV and DV in this scientific question: “Do students learn more in groups or by themselves?” Please get out your homework and keep it on your table.

  24. Get out Homework • We will go over it together.

  25. Why are scientific questions and predictions important in science?

  26. Objective • By the end of today you should be able to write a good hypothesis for a scientific question.

  27. Notes • Remember to write all the information in red.

  28. Scientific Questions • A good scientific question needs: • An independent variable • A dependent variable • To be measureable • heavier, taller, faster, increased • NOT prettier, better, healthier

  29. Scientific Questions • Example: Will the amount of sunlight a plant receives affect how tall the plant grows? • Why is this a good example? What’s the IV? What’s the DV? Is it measureable?

  30. Scientific Questions • Do Jordans or Nikes make you run faster? • Why is this a good example? What’s the IV? What’s the DV? Is it measureable?

  31. Scientific Questions • How many miles are between Oklahoma City and Tulsa? • Why is this a bad example? What’s the IV? What’s the DV? Is it measureable?

  32. Scientific Questions • Does eating breakfast make you better at catching a baseball? • Why is this a bad example? What’s the IV? What’s the DV? Is it measureable? How can we make it better?

  33. Scientific Questions • Does wearing makeup make you prettier? • Why is this a bad example? What’s the IV? What’s the DV? Is it measureable? How can we make it better?

  34. Scientific Questions • With your group, write a list of three GOOD scientific questions. • Make sure they are measureable and have an IV and DV

  35. Hypothesis • A hypothesis is an educated guess. It’s like a prediction. • It is an If/then statement • It is always in this format: “If (independent variable) then (dependent variable). • Example: If you play violent video games, then you will have higher blood pressure.

  36. Hypothesis • How to turn a scientific question into a hypothesis: • 1st identify the IV and DV • 2nd think about your prediction • 3rd begin with “If” and the IV • 4th finish it with “then” and the DV

  37. Hypotheses • Do Jordans or Nikes make you run faster? • IV: type of shoe (Nikes or Jordans) • DV: how fast you run • My prediction: I think that Nikes will help you run faster. • Hypothesis: If you wear Nikes, then you will run faster.

  38. Hypotheses • Does a plant grow taller when it is given more water? • IV: how much water it gets • DV: how tall the plant grows • My prediction: I think that plants given more water will grow taller. • Hypothesis: If a plant gets more water, then it will grow taller.

  39. Hypotheses • Does eating breakfast lead to higher test scores? • IV: eating breakfast • DV: test scores • My prediction: I think that eating breakfast will lead to higher test scores. • Hypothesis: If you eat breakfast, then you will earn higher test scores.

  40. Add the red words to your glossary • Remember to add the word and the page number • You do not need to write the definition in the glossary • Scientific question • Hypothesis

  41. Hypothesis Stations • On the same page as your Do Now (or the very next page) and your notes, please number from 1 to 10, skipping two or three lines between numbers.

  42. Hypothesis Stations • You will be going to stations around the room with your tablemates. For each station you will see a scientific question. Your job is to work together to write a hypothesis for each scientific question. • Make sure you are recording each station number at the correct spot in your lab book.

  43. Predict how long it will take for a strong dude to pull apart two phonebooks • Put your prediction in hypothesis form. • Example: If the strong dude tries to pull apart phonebooks, then it will take him 5 seconds.

  44. Thursday September 13th or Friday September 14th Remember to write both the question and your answer. Do Now: • What two words are in every well written hypothesis? • Make a list of at least 5 words to describe this room.

  45. Notes • Please write all the information in red.

  46. What is an observation?

  47. Why do we need to learn about observations in science?

  48. Qualitative Observations • Qualitative Observation: words that describe qualities or characteristics • Examples: red, soft, sour, dry Draw a picture to help you remember the definition of qualitative.

  49. Quantitative Observations • Quantitative Observations: numbers and a label that describe something • Examples: 12 feet, twenty hours, 34.5 degrees Celsius • Draw a picture to help you remember the definition of quantitative.

  50. Add the red words to your glossary • Remember you do not need to rewrite the definition. JUST WRITE THE WORD AND THE PAGE NUMBER. • Qualitative Observation • Quantitative Observation

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