# Friday, 12/15/17- B Day

1. Science FridayBabies on the Brink
2. Self Reflection for the Unit on Sound– Refer to page 8 in your ISN for directions on how to write a Self-Reflection. Use the Google Doc in Google Classroom to type your responses in the light grey boxes for each of the steps.

Home Learning:

• ISN’s are due next week! 🙂 Per.3- Mon., Per. 4- Tue., Per.2- Wed., Per 7- Thu., Per 6- Fri.
• Self Reflection is due Monday 12/18

# 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?

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?

# Wednesday, 12/6/17- A Day

1. Do Now– Retrieval practice with cooperative table group.
2. Assessment– Sound Source- Your teacher will play a video clip showing an instrument called a harp making a sound. Use what we’ve learned so far about sound sources, to explain the phenomena you saw in the video.

# Tuesday, 12/5/17- B Day

Question:

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

2. Complete 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.
3. Model– How can so many different sounds be coming from the needle and the record when you spin it?

Home Learning:

STUDY for the Sound Source Quiz tomorrow 12/6– ISN pages 15-31

# 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?