Thursday, 12/7/17- B Day

Question:

What else besides an object’s length affects the frequency it vibrates when it is struck or plucked?

Learning Tasks:

  1. Do Now- Solve the following riddle: A traveler comes to a fork in the road which leads to two villages. In one village the people always tell lies, and in the other village the people always tell the truth. The traveler needs to conduct business in the village where everyone tells the truth. A man from one of the villages is standing in the middle of the fork, but there is no indication of which village he is from. The traveler approaches the man and asks him one question. From the villager’s answer, he knows which road to follow. What did the traveler ask?
  2. Our Twitter Challenge- On November 30th, NGSX tweeted our class with this challenge– to explain what is going on in this video. NGSX is an organizations that supports teachers in developing their teaching practice to align with NGSS (Next Generation Science Standards). On December 1st, I tweeted an acceptance of the challenge on behalf of our science class. I think that we are READY!!!
  3. Supplemental Investigation-What else besides an object’s length affects the frequency it vibrates at when it is struck or plucked? 
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Monday, 12/4/17- A Day

Question:

How can so many different sounds be coming from the needle and the record when you spin it?

Learning Tasks:

  1. Do Now- Copy down today’s homework assignment in your planner. Get out your ISN and add to the Table of Contents- “Investigations 1-3 p.31” (Right Side); Head page 31 properly with “Invetigations- 12/4/17.”
  2. Talk with your cooperative table group– How do the vibrations from sound sources compare when they produce louder vs softer sounds? How do the vibrations from sound sources compare when they produce higher vs. lower pitch sounds? What makes the needle on the record vibrate as the record is spun?
  3. Write-Pair-Share- Individually, write your answer to the following question on ISN p.31. Use complete sentences. If differences in the volume of a sound and differences in the pitch of a sound are due to differences in the amplitude & frequency of vibrations, then wouldn’t something in the grooves of the record be making the needle vibrate at different frequencies or deform with different amplitudes so that it produced different sounds? What might be forcing it to change its pattern of vibration? Pair to share your answers with your cooperative table group and then the whole class.
  4. Investigations 1-3- Let’s look at the record and needle again to see if its vibrations are changing as it produces different sounds…We’ll look again at the Michael Jackson video of the closeup of the needle on the record. This time, look to see differences in the frequency or amplitude of the vibrations of the needle as it produces sound. Answer questions Q3-Q6 in handout. Look through the procedure for Investigation 2. Complete it with a partner. When you are done with Investigation 2, send one partner to the demonstration desk to get a copy of the photograph of the surface of the record. You will be able to write, label, & draw on this photograph so be prepared so share your findings.

Home Learning:

STUDY for the Sound Source Quiz on Wed. 12/6– ISN pages 15-31

Tuesday, 11/28/17- A Day

Question:

How do the vibrations of the different sounds compare for higher vs lower pitch notes?

Learning Tasks:

  1. Do Now–  Copy down today’s homework assignment in your planner. Get out your ISN and add to the Table of Contents- “Higher vs Lower Notes p.28” (Left Side); Head page 28 properly with “Higher vs Lower Notes- 11/28/17.”
  2. Write Pair Share– “What patterns did you notice between how the instruments & music box made different pitched sounds? Do you think there are differences in the vibrations being made as different notes are being produced? Explain.” Write the answers to the questions on ISN p.29. Pair with your cooperative table group to share your responses and come to a consensus. Share your group responses with the class.
  3. Investigation– Higher vs Lower Notes- Predict a graph of the shorter wooden stick pulled back about 10cm, then predict a graph of longer wooden stick pulled back the same amount. Use the probe to collect data & generate graphs to compare to your prediction. Record the graphs in Observations in your handout. Notice patterns between the graphs of the shorter wooden stick and the longer wooden stick. Answer Making Sense questions 5, 6, & 7 of handout.
  4. Conclusions– On ISN p.28, answer the following question: What discoveries did you make about sound sources and why different objects produce sounds of different pitches? Work in your cooperative table groups.

Home Learning

Complete Conclusion on ISN p.28

Monday, 11/27/17- B Day

Question:

How do the vibrations of the different sounds compare for higher vs lower pitch notes?

Learning Tasks:

  1. Do Now Copy down today’s homework assignment in your planner. Get out your ISN and add to the Table of Contents- “Higher vs Lower Notes p.29” (Right Side); Head page 29 properly with “Higher vs Lower Notes- 11/27/17.”
  2. Turn and Talk– Summarize what our question was that we investigated last week. Then brainstorm: What are some musical instruments that we can look at more closely so see how they make different pitch sounds?
  3. Investigation- Set up data table on ISN p.29. Make observations of plucking a guitar string at different lengths, striking different bars on a xylophone, and the structures of a music box device when the handle is cranked. For each, pay attention to anything you notice about the structure of the instruments as they play different notes. Record your observations in the data table.
  4. Write Pair Share– “What patterns did you notice between how the instruments & music box made different pitched sounds? Do you think there are differences in the vibrations being made as different notes are being produced? Explain.” Write the answers to the questions on ISN p.29. Pair with your cooperative table group to share your responses and come to a consensus. Share your group responses with the class.

Home Learning:

Complete questions on ISN p.29

Monday, 11/20/17- A Day

Question:

How do the vibrations of the sound source compare for louder vs softer sounds?

Learning Tasks:

  1. Do Now- Copy down today’s homework assignment in your planner. Get out your ISN and add to the Table of Contents- “Loud vs Soft Sound p.26” (Left Side); Head page 26 properly with “Loud vs Soft Sound- 11/20/17.”
  2. Investigation– Loud vs Soft Sound- Predict a graph of the wooden rod pulled back a small amount (representing soft sound), then pulled back farther (representing loud sound). Use the probe to collect data & generate graphs to compare to your prediction. Notice patterns between the graph of the wooden rod pulled softly vs harder. Answer Predict, Observations, & Making Sense questions on pages 2-3 of handout.

Home Learning

Complete Conclusions questions on handout