Remember write today’s date keep your warm-ups organized Warm-up How do you solve problems in your life? Predict or List the steps in the scientific method and compare them to how you solve problems. http://www.youtube.com/watch?v=9kf51FpBuXQ

WARM-UP Turn to a blank page in your notebook At the top label it SOLVE A PROBLEM activity Below that write- THE PROBLEM: Mrs. V. Murphy would like to reach the class projector easily, she needs a “stage” that will make her taller. How can we create a stable base for her stage out of notecards and masking tape. Next: Materials: 24 3x5 notecards 30 cm of masking tape Next write HYPOTHESIS: (skip 4 lines) Next write DESIGN FOR EXPERIMENT: (skip 10 lines)

Setting up cont… At the bottom: CONCLUSION: (skip 4 lines) HYPOTHESIS REJECTED OR ACCEPTED?

WARM-UP a. A reason to start a lab and it is usually in the form of a question. b. Includes all of the steps you need to take in order to complete the lab c. The last step in the scientific method that summarizes the experiment and the results. d. An educated guess. e. Writing down what you see or experience during a lab. Hypothesis      ________ Procedure       ________ Observation    ________  Problem          ________ Conclusion      ________  WARM-UP

Warm-up Write today’s date on your paper. Take out the Simpson’s homework. Compare your answers with your table partner. Construct a response for each of the following on your paper: 1. What words are essential for writing a proper hypothesis? 2. What is the difference between the control group and the experimental group?

Remember write today’s date and keep your science binder section organized Warm-up Look at the outline on your table (share). Review each step and copy it into your science notebook leaving a small space to add info if needed. We will finish the discussing via the PPT when attendance and homework check is done. While copying outline listen to the Mr. Lee song. Mr. Lee’s scientific method song

Warm-up: (take out your homework, on your paper write the date and warm-up, read below and answer the questions) 1) Flower Power SpongeBob loves to garden and wants to grow lots of pink Flowers for his pal Sandy. He bought a special Flower Power fertilizer to see if will help plants produce more flowers. He plants two plants of the same size in separate containers with the same amount of potting soil. He places one plant in a sunny window and waters it every day with fertilized water. He places the other plant on a shelf in a closet and waters it with plain water every other day. What did SpongeBob do wrong in this experiment? Explain. What should SpongeBob do to test the effectiveness of Flower Power fertilizer?

Step 1 – Step 2 – Step 3 – Step 4 – Step 5 – Step 6 – Ask a Question Form a Hypothesis Step 3 – Test the Hypothesis Step 4 – Analyze the Results Step 5 – Draw Conclusions Step 6 – Communicate Results

Scientific Method & Experimental Design

What is the scientific method? A specific way a scientist solves a problem

Step 1: Define the problem/ Ask a Question Questions should begin with what, why, how, and when in order to help focus the investigation and research. Good questions come from careful observations. How does acid rain affect plant growth? science illusions

A hypothesis is a clear statement of what you expect the answer to your question to be. A good hypothesis is testable. A hypothesis will represent your best “educated guess” A hypothesis can lead to predictions. Step 2: The a Hypothesis

Step 2: Form a Hypothesis What is a prediction: A prediction is what you think the outcome of your experiment or data collection will be. Predictions are usually stated in an If then, because statement. Recap Step 1: How does acid rain affect plant growth? Step 2: Hypothesis- Acid rain slows plant growth Prediction: If a plant is watered with only acid rain (which has a pH of 4), then the plant will grow at half its normal rate because acid rain inhibits growth.

Step 3: Test the Hypothesis How? Controlled Experiment: Tests only one factor at a time. There are two types of groups in Controlled Experiments. Control Group: Would be watered with normal rain water. Experimental Group: Would be watered with acid rain.   Step 3: Test the Hypothesis

Step 3: Test the hypothesis/ experimental design A variable is any factor that can be controlled or changed from one group to another during an experiment. three types: Controlled, Dependent and independent What is a variable?

Independent Variable— factor that is changed or manipulated by the experimenter (which is me) in an experiment referred to as the “IV” “I” in independent stands for “I” change!

Dependent Variable— factor that responds to the changes made by the experimenter (me) also referred to as the “DV” ask yourself, “what depends on the IV” ask yourself, “what is being measured or counted at the end of the experiment”

Writing a hypothesis using variables Remember it must be written as an “If,…then” statement If the independent variable (IV) is how the IV is changed, then the dependent variable (DV) will predicted effect. **Anything in italics and underlined above is replaced by actual variables in the experiment being tested**

Step 4: Collect Data and analyze the Results Examine all information thus far in the experiment (i.e. observations and data) Tables and graphs are often used during this step to organize the data. Step 4: Collect Data and analyze the Results

Step 5: Draw Conclusions After analyzing your data, determine if your results match your hypothesis. If your observations match your hypothesis, retest your experiment to verify your results. If your observations do not match your hypothesis, check your procedures for errors. You may have to discredit your hypothesis and make up a new one. Step 5: Draw Conclusions

Step 6: Communicate Results When you complete an oral or written report about your results, you let other people know what you’ve learned. Some reports may even lead to another question and then another investigation. For example: Modern Atomic theory is a result of many different experiments whose results were published. Step 6: Communicate Results

What are the six steps of the Scientific Method? Ask a Question Step 2 – Form a Hypothesis Step 3 – Test the Hypothesis Step 4 – Analyze the Results Step 5 – Draw Conclusions Step 6 – Communicate Results

Sponge Bob Square Pants and The Scientific Method Can you find the mistakes that Sponge Bob Square Pants made when completing his experiments? Discuss scenarios in your table group

The Bikini Bottom gang loves science class and wanted to do a little research. Read the description for each experiment and use your knowledge of the scientific method to answer the questions. (1) Flower Power SpongeBob loves to garden and wants to grow lots of pink flowers for his pal Sandy. He bought a special Flower Power fertilizer to see if will help plants produce more flowers. He plants two plants of the same size in separate containers with the same amount of potting soil. He places one plant in a sunny window and waters it every day with fertilized water. He places the other plant on a shelf in a closet and waters it with plain water every other day. What did SpongeBob do wrong in this experiment? Explain. What should SpongeBob do to test the effectiveness of Flower Power fertilizer? Write an experiment.

Warm-up (2) Super Snails Gary is not the smartest snail in Bikini Bottom and believes he can improve his brain power by eating Super Snail Snacks. In order to test this hypothesis, he recruits SpongeBob and several snail friends to help him with the experiment. The snails ate one snack with each meal every day for three weeks. SpongeBob created a test and gave it to the snails before they started eating the snacks as well as after three weeks. Based on the data provided, do the Super Snail Snacks work? Explain your answer.

(3) Bubble Time Patrick loves bubble gum and would like to be able to blow bigger bubbles than anyone else in Bikini Bottom. To prepare for the Bikini Bottom Big Bubble Contest, he bought five different brands of bubble gum and needs your help to find the brand that creates the biggest bubbles. Write an experiment to test the bubble power of the bubble gum brands and help Patrick win the contest.

SpongeBob and his Bikini Bottom pals have been busy doing a little research. Read the description for each experiment and answer the questions.

Mr. Krabbs wants to make Bikini Bottoms a nicer place to live Mr. Krabbs wants to make Bikini Bottoms a nicer place to live. He has created a new sauce that he thinks will reduce the production of body gas associated with eating crabby patties from the Krusty Krab. He recruits 100 customers with a history of gas problems. He has 50 of them (Group A) eat crabby patties with the new sauce. The other 50 (Group B) eat crabby patties with sauce that looks just like new sauce but is really just mixture of mayonnaise and food coloring. Both groups were told that they were getting the sauce that would reduce gas production. Two hours after eating the crabby patties, 30 customers in group A reported having fewer gas problems and 8 customers in group B reported having fewer gas problems.

Which people are in the control group? What is the independent variable? What is the dependent variable? What should Mr. Krabs’ conclusion be? Why do you think 8 people in group B reported feeling better?

Warm-up No Notebooks needed Today… First person in the group to arrive to class: Pick up the Kool-aide lab under the promethean board. Read all instructions as a group.

Warm-up Write a paragraph summarizing yesterday’s lab using the following terms: Scientific method Hypothesis Observation Solution Experiment Conclusion