The Scientific Method Unit 1 Lesson 1 Learning

Learning Targets • You will be able to list the steps of the Scientific

Intro to the Scientific Method • We use the scientific method EVERY DAY! •

Steps in the Scientific Method 1. 2. 3. 4. 5. Recognize the problem Form

Steps of the Scientific Method 1. Recognizing the Problem • Formulate a question that

Steps of the Scientific Method 2. Form a Hypothesis • A hypothesis is an

Hypothesis Practice Problem: There are BEARS in my YARD! Hypothesis: If I leave garbage

Steps of the Scientific Method 3. Test the Hypothesis – write a procedure. •

Sceneario Problem: I am weak and not strong. Hypothesis: If I lift weights, I’ll

Steps of the Scientific Method You. Tube / Video Link This hypothesis won’t be

Steps of the Scientific Method • There are two main types of variables. •

Scenario: You want to see x-box game is the most entertaining. You compare three

Steps of the Scientific Method 4. Analyze Your Data. • The results of the

Steps of the Scientific Method DEPENDENT • Data can also be represented on a

Steps of the Scientific Method 5. Draw Conclusions • The data from the experiment

Models • Sometimes in science, running complete authentic experiments are difficult. • Models represent

Lets Try Some Problems of Our Own Problem: My plants are weak and stringy

Lets Try Some Problems of Our Own Hypothesis: If I add Miracle Grow, then

Lets Try Some Problems of Our Own Materials: Two Potted Plants, Miracle Grow, Water,

Lets Try Some Problems of Our Own Dependent Variable: What you measure. In this

Lets Try Some Problems of Our Own Control: What is the standard. This is

Lets Try Some Problems of Our Own Results: Measure what plant grew more. Record

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The Scientific Method Unit 1 – Lesson 1

Learning Targets • You will be able to list the steps of the Scientific Method. • You will be able to identify variables in experiments.

Intro to the Scientific Method • We use the scientific method EVERY DAY! • It is body of techniques for investigating phenomena, acquiring new knowledge, or correcting previous knowledge. Observation Conclusion Question Hypothesis Results Procedure

Steps in the Scientific Method 1. 2. 3. 4. 5. Recognize the problem Form a hypothesis Test your hypothesis Analyze your data Draw conclusions

Steps of the Scientific Method 1. Recognizing the Problem • Formulate a question that needs to be answered, based on OBSERVATIONS, not INFERENCES. Some scientists believe humans actually possess 9 -10 senses!

Steps of the Scientific Method 2. Form a Hypothesis • A hypothesis is an educated guess about what the solution to the problem is. • We typically use an “if…then…” statement.

Hypothesis Practice Problem: There are BEARS in my YARD! Hypothesis: If I leave garbage out, then it will attract bears.

Steps of the Scientific Method 3. Test the Hypothesis – write a procedure. • Variable: What changes in the experiment • Control: What receives no variable. It is your standard for comparison. • Constants: What stay the same. Ex: temp, time, plant type, etc. Problem: My plants are not growing… Water Miracle Grow Hypothesis: If I add Miracle Grow instead of water, then my plants will grow faster. VARIABLE CONTROL Plant A Plant B

Sceneario Problem: I am weak and not strong. Hypothesis: If I lift weights, I’ll get stronger. * In this experiment, I’ll keep my eating habits the same, my sleep schedule the same, and my daily habits the same. All I’ll change is weight lifting. VARIABLE WEIGHT LIFTING CONTROL NO WEIGHTS CONSTANT SLEEP, EATING, DAILY

Steps of the Scientific Method You. Tube / Video Link This hypothesis won’t be repeated

Steps of the Scientific Method • There are two main types of variables. • Independent variable – the variable you CHANGE • Dependent variable – the variable you MEASURE Change: What you feed the plant Measure: Plant Growth Plant A Plant B

Scenario: You want to see what brand of tape is the stickiest. You compare how well duct tape, scotch tape, and yellow tape stick to the wall. • What do you change? (independent variable) • What do you measure? (dependent variable)

Scenario: You want to see x-box game is the most entertaining. You compare three games by playing them over the course of a weekend. • What do you change? (independent variable) • What do you measure? (dependent variable)

Steps of the Scientific Method 4. Analyze Your Data. • The results of the experiment are recorded as data. We put these results in a data table. To determine data, observations are made with our senses and instruments. Test Tube Color Change Occurred a x Color Change Did Not Occur b x c x d x

Steps of the Scientific Method DEPENDENT • Data can also be represented on a GRAPH - Dependent variable goes on Y axis - Independent variable goes on X axis INDEPENDENT

Steps of the Scientific Method 5. Draw Conclusions • The data from the experiment needs to be looked at and analyzed. After this is done, you can develop a conclusion. • Did your experiment prove support your hypothesis? What can make your data MORE accurate? Hint: Pete and Repeat are on a boat, Pete falls off. Who is left in the boat?

Models • Sometimes in science, running complete authentic experiments are difficult. • Models represent things that happen too slowly, too quickly, or are too big or too small to observe directly. • Models are also useful where direct observation would be too dangerous or expensive.

Lets Try Some Problems of Our Own Problem: My plants are weak and stringy looking. Question: How can I make my plants grow better?

Lets Try Some Problems of Our Own Hypothesis: If I add Miracle Grow, then my plants will grow better!

Lets Try Some Problems of Our Own Materials: Two Potted Plants, Miracle Grow, Water, Ruler Procedure: Grow two plants under same conditions Water one with Miracle Grow Measure the plants growth using a ruler

Lets Try Some Problems of Our Own Dependent Variable: What you measure. In this case we are measuring plant growth. Independent Variable: What you change. In this case, we changed what liquid the plant is receiving. Constant: What remained the same. In this case, the soil, the type of plant, the time, the temperature, etc.

Lets Try Some Problems of Our Own Control: What is the standard. This is what we make our comparisons too. In this case, a plant with water.

Lets Try Some Problems of Our Own Results: Measure what plant grew more. Record your data using a graph. Conclusion: Analyze your data. In this case, we see that Miracle Grow makes plant grow better.