The Scientific Method. What is science? A way or process used to investigate the world around us. Used to solve problems.

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Presentation transcript:

The Scientific Method

What is science? A way or process used to investigate the world around us. Used to solve problems.

Skills Needed Observing Inferring Predicting Classifying Making Models

Qualities Needed Curious Honest Open minded Skeptic Creative

Scientific Method 1. State the problem 2. Gather information 3. Form a hypothesis 4. Test your hypothesis/perform experiment 5. Record and analyze data 6. Draw conclusions 7. Communicate findings/repeat

Designing a controlled experiment Choose an accurate number of trials Select appropriate materials Eliminate bias Control variables

Controlled Experiment Control: (comparison) Constants: (same) Independent variable: (changed/different) Dependent variable: (measured)

Read the information below and then answer the questions. SpongeBob loves to grow flowers for his pal Sandy, who loves big, colorful flowers. He found a new brand of seeds coated with a special “booster” fertilizer that said it would produce huge flowers. He planted 5 of the new seeds in one container and 5 of the old brand of seeds in another container. He placed both containers on a sunny windowsill and watered them every day. He measured the diameter of each flower, which is shown in the chart. 1.Which group was the control? 2. What is the independent variable? 3. What is the dependent variable? 4. What is the average diameter for each group? Old Seeds10 cm12 cm14 cm6 cm8 cm New Seeds8 cm14 cm10 cm12 cm16 cm 5. Which seeds are the best for big flowers? The seeds without the fertilizer (old seeds) fertilizer Size or diameter of the flower Old = 10 cm, New = 12 cm New seeds w/ the booster

Read the information below and then answer the questions. SpongeBob and Patrick love to go jellyfishing. They wondered if a new brand of jellyfish bait would help them catch more jellyfish. To test their idea, they bought a big container of bait for their next 3 trips to their top-secret fishing spot. SpongeBob fished without any bait, while Patrick used the new bait. Both of them kept track of how many jellyfish they caught in 30 minutes, which is shown in the chart. 1.Which person was the control? 2. What is the independent variable? 3. What is the dependent variable? 4. Based on the data, how would you rate the new bait? SpongeBobPatrick SpongeBob Jellyfish Bait Number of jellyfish caught The bait appears to have helped a small amount, but shouldn’t be rated as a great deal. Overall Patrick caught 2 more jellyfish than SpongeBob.