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Predict, Observe, Explain (POE) Lab 1

8 th Grade Physical Science. Predict, Observe, Explain (POE) Lab 1. GPS. S8CS1. Students will explore the importance of curiosity, honesty, openness, and skepticism in science and will exhibit these traits in their own efforts to understand how the world works.

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Predict, Observe, Explain (POE) Lab 1

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  1. 8th Grade Physical Science Predict, Observe, Explain (POE) Lab 1

  2. GPS • S8CS1. Students will explore the importance of curiosity, honesty, openness, and skepticism in science and will exhibit these traits in their own efforts to understand how the world works. a. Understand the importance of—and keep—honest, clear, and accurate records in science.

  3. S8CS2. Students will use standard safety practices for all classroom laboratory and field investigations. a. Follow correct procedures for use of scientific apparatus. b. Demonstrate appropriate techniques in all laboratory situations.

  4. Common Core • L6-8RST3: Follow precisely a multistep procedure when carrying out experiments, taking measurements, or performing technical tasks. • L6-8RST6: Analyze the author’s purpose in providing an explanation, describing a procedure, or discussing an experiment in a text.

  5. L6-8RST8: Distinguish among facts, reasoned judgment based on research findings, and speculation in a text. • L6-8WHST2: Write informative/explanatory texts, including the narration of historical events, scientific procedures/ experiments, or technical processes • f. Provide a concluding statement or section that follows from and supports the information or explanation presented.

  6. How Your Labs Should Look In Your Notebook

  7. Square 1 • Materials: a. Crystals b. 2 Clear beakers c. Water (100ml) d. Mountain dew (100ml) *teacher will pour the Mountain Dew for each group. e. Triple beam balance/scale f. Ruler g. Spoon

  8. Square 2 • Make observations (5 senses – touch/feel, smell, don’t taste, visual, sound) and record. You may want to draw your crystals. • Record measurements. For mass use the unit grams. For length, use cm or mm. • When you have finished with your observations, put a few crystals (½ spoonful) in each cup of fluid.

  9. Square 3 • Record your predictions. What do you think will happen to the crystals when you put them in each liquid? What do you think will be the same or different between each liquid?

  10. Square 4 • Why do you think they are almost invisible in water? • What do you think happened to the ghost crystal that caused them to change (grow) so much? • What happened to the crystals when you put them in the Mountain Dew? • What do you think the crystals are used for? • Record observations – use the scale, ruler, what do you feel, see – remember DO NOT TASTE!

  11. Summarize • As you read the article Sodium Polyacrylamide you will learn how to summarize. • Read the article with the purpose of trying to remember all you can. • When you finish, write down the details you remember.

  12. Summarize (continued) • Now, reread the article to see if there is any information that should be included in the list. • Also, check the list to correct any incorrect information. • Next, write a summary of the material.

  13. Lastly Cleanup your area. Take crystals out of the beakers. Pour water, and Mountain Dew only down the drain. Put crystals that were in the liquids into one of the empty beakers. Wash out the remaining beakers and hang them to dry. The beaker with the crystals should be placed in the back cabinet for further study. Question: What will happen to the crystals that you put back in the cabinet?

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