1 / 16

Exploring the Scientific Method: Understanding Experimentation in Modern Science

In today’s lab, we focus on the scientific method, emphasizing that real scientists don’t always follow a precise manual—they explore the unknown. Real-world experimentation involves navigating confusion and uncertainty, much like John Snow did during the 1854 London cholera outbreak. The lab activities include observing chemical reactions, analyzing unknown liquids, and understanding data patterns in DNA research pioneered by scientists like Erwin Chargaff. Students will engage hands-on in experimentation, enhancing their understanding of scientific principles and methodologies.

amal
Télécharger la présentation

Exploring the Scientific Method: Understanding Experimentation in Modern Science

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Lab 2: The Scientific Method

  2. Point of Today’s Lab • In a real job, in real science, you will not have a lab manual with a cookbook recipe of steps for you follow • Scientists get paid to figure things out….not do experiments they already KNOW the answer to • A lot of being a scientist….is sitting in confusion

  3. Experimentation • It’s how we learn important things about the world • Good experimentation: baby monkey • Poor experimentation: kitten • Observation: you

  4. Movies

  5. You play the “Scientist” everyday • You stumble out of your room at 4 a.m. and turn on a lamp • Nothing happens • Now what? Curse the darkness?

  6. How has this been used? • John Snow • London Cholera Outbreak in 1854 • Thought it was spread by fog and mist • Discovered it was from a contaminated water pump

  7. John Snow’s Map

  8. The Road to DNA Discovery • Erwin Chargaff • Data displays that organisms have roughly equal amounts of DNA base pairs • Real structure later discovered by James Watson and Francis Crick….Rosalyn Franklin?

  9. Chargaff’s data

  10. Chargaff • Maybe Chargaff didn’t discover the structure of DNA….but he contributed a VERY IMPORTANT OBSERVATION that lead to the discovery. Sometimes we don’t always get a conclusion. That’s okay. His observations many scientists later

  11. Unknown Liquids • Mix samples and deduce something about their relationship • 3 mL in each tube • You have indicators A & B, you also have substances 1-6 • Addition of 5 drops should be enough for change • KEEP TRACK OF WHAT YOU ADD TO WHAT

  12. Pattern Master • Bio 181L Go Folder Pattern Master • Pattern Master for Fun- Select Demo • Find a pattern relating to shapes, colors, numbers, letters, etc. • Put cards in correct order to make them all “happy” or green

  13. Rule Quest • Given 1-step clockwise*, it could be... • Perimeter to top inner color • Top inner color to lower left color • Lower right color to lower left color *NEIGHBOR definitions are clockwise, counterclockwise

  14. Homework • Quantum Mine (BONUS) • Logic of Disproof Assessor • Pattern Master (Individual) • Easy= 45 Points, Medium= 50, Hard= 55 • 50 for written portion (follow rubric) • Written explanation of unknown liquids (Group) • Rubric and example on lab calendar

  15. Quantum Mine • Bio 181L Go Folder Quantum Mine • Don’t Log in- click “New Mine” • Shoot light beams, find out where gems are

  16. Rules of the Mine or... http://en.wikipedia.org/wiki/Black_Box_(game) 16

More Related