# A Special Message to My Students

I know you’ve probably missed our YouTubesday videos, so here’s something silly I put together this week.

I used a site called Yarn.io to make this. The links are in the description if you’d like to make one yourself. I’d love to see what you create!

# AP Statistics Assignment for week of 3/23

3/28 Update: As we look to the next two weeks, I’d like your feedback on how to approach instruction. Please complete this short survey about the content and method of this instruction.

3/27 Update: I made a video debrief of the Desmos lessons below that you can take a look at here.

Also, all AP Statistics students have been granted access to IXL, an online math practice tool. There are skill practice modules for math content all the way from Kindergarten through Calculus, and there’s even some decent AP Statistics content.

You will have to log in via Clever (instructions are here), click the IXL button on the page that loads, and then navigate to the Pre Calculus section. Any of the modules in sections X: Probability, Y: Probability Distributions, or Z: Statistics would be worthwhile practice for you!

3/24 Update: CollegeBoard has released a daily schedule of their live webcasts, which will start on Wednesday the 25th. The full list/archive of course topics can be found here; the first AP Statistics topic will be for Chi-Squared Tests for Goodness of Fit, a topic from late in the course that we likely will not get to in our own work (and will not appear on your exam later).

Our first review topic will be about the power of a hypothesis test (which, you’ll recall, we defined to be the probability of a test correctly detecting a false null hypothesis.

This lesson will take place over a few parts on Desmos. For each part, you’ll log in at student.desmos.com and enter the given class code. Make sure you click the Sign in with Google button so that your results are saved. If you’re one of the first few people who complete the activity, be sure to log back in later and see what other people have said!

If you have questions, post them here or send me an email. On Wednesday, 3/25 at 10:00 am, I will host a virtual office hour using Google Meet. I’ll post the link here and send it out by email when that goes live. Come by and say hello, ask some questions, or just chat. I look forward to seeing you!

## From my previous update post

Collegeboard has released some information about how AP exams will be impacted. From that update:

• Traditional face-to-face exam administrations will not take place. Students will take a 45-minute online free-response exam at home. This exam will be composed entirely of free response questions
• Some students may want to take the exam sooner rather than later, while the content is still fresh. Other students may want more time to practice. For each AP subject, there will be 2 different testing dates.

All exams will cover a reduced version of the course curriculum, as detailed on the page above. For AP Statistics, this means Units 1-7 from the Collegeboard curriculum, which correspond to Units 1-6 of our textbook.

At least until Spring Break, I will not be attempting any new instruction from Unit 6. I encourage you to search for videos online, or to check out the instructional videos that the AP Program is putting together. If you have your textbook, read through Chapters 22, 23, and 24 and work on some of the odd-numbered problems. While I won’t be formally teaching any of that content yet, I’ll be more than happy to answer any questions you might have.

# COVID-19 Closure Updates (Week 2)

Hi all!

I have quite a bit of new information to share with you, and felt it appropriate to put it all in a new post. You can read my original post here; there’s still some useful stuff to be found.

Unfortunately, New York State has become the hardest hit state for COVID-19 cases. Almost half of all confirmed cases in the US are in New York, and about half of those are in/around New York City. Governor Cuomo has signed an order mandating that all non-essential businesses statewide shut down completely, as well as banning all non-essential gatherings of individuals of any size for any reason. I recommend you read the above link for the full details of the order (and check out this list of what counts as “essential” businesses). Unfortunately, we do not know for how long this closure will last.

ICSD schools are closed until April 12 at the earliest, and the current official recommendation regarding distance learning is that all distance learning content is optional and nongraded. They further recommended that any content should be a review at least until spring break, and that teachers will provide one such activity per course per week.

## To all students and families:

• Please complete the district’s Student Device and Wifi Access Survey. This has a lot of the same questions as my own Google Poll from earlier in the week, but the district needs to hear from everybody.
• Continue to check the ICSD Coronavirus page (and the Tompkins County Health DepartmentCDC, and NYS Department of Health pages) for information and updates about the virus.
• If you need meals: Free meals are available for all children during the school closure. Starting Tuesday, March 24, all ICSD meals will be delivery-only. Complete this form to request a delivery. A menu and more information can be found online here
• The leading local broadband internet provider, Spectrum, is offering free broadband and Wi-Fi access for 60 days to households with children in grades K-12 or in college for those who do not already have a subscription. Families can call (844) 488-8395 to enroll. Installation fees will be waived for new student households, the company said. Spectrum said regular pricing will take effect at the end of the 60-day period if a customer doesn’t cancel or change the service. (from Syracuse.com)
• If you’re looking for non-Internet based educational tools, our local PBS affiliate WSKG is preempting their regular air schedule to launch a Learn at Home schedule. All day, WSKG will be broadcasting valuable, enriching programming that you can use to supplement what I and your students other teachers offer during this time.
• See this Google Document for a list of currently-open local restaurants and their delivery/take-out status. Many dine-in restaurants are offering curbside pickup. Be aware that some of these locations’ hours/availability may change.
• The New York State Board of Education has suspended all Elementary and Intermediate-Level state assessments (Grades 3-8). No decision has been made about High School Regents exams. Keep an eye on the NYSED Coronavirus page for updates, and take a look at their Continuity of Learning page for additional suggestions.

## To my AP Statistics students:

I know you are anxious about what will happen with grades, classes, finals, college acceptances, transcripts, and so on. Do not feel bad about the stress you might be experiencing or any sadness you may have for the school events you’re now missing out on because of this outbreak. This disease is affecting everybody in different ways, and while perspective is important, that doesn’t mean you’re not allowed to be upset about how it is impacting you personally.

The Collegeboard has released some new information about how AP exams will be impacted. From that update:

• Traditional face-to-face exam administrations will not take place. Students will take a 45-minute online free-response exam at home.
• Some students may want to take the exam sooner rather than later, while the content is still fresh. Other students may want more time to practice. For each AP subject, there will be 2 different testing dates.

Furthermore, all exams will cover a reduced version of the course curriculum, as detailed on the page above. For AP Statistics, this means Units 1-7 from the Collegeboard curriculum, which correspond to Units 1-6 of our textbook. (Update: Also, Collegeboard’s VP of Advanced Placement Trevor Packer has stated that these take-home tests will not include any multiple-choice questions)

At least until Spring Break, I will not be attempting any new instruction from Unit 6. I encourage you to search for videos online, or to check out the instructional videos that the AP Program is putting together (there is a daily schedule posted here). If you have your textbook, read through Chapters 22, 23, and 24 and work on some of the odd-numbered problems. While I won’t be formally teaching any of that content, I’ll be more than happy to answer any questions you might have.

The Unit 5 MCQ Part B Personal Progress Check is still active in AP Classroom. I am working with Ms. Seifert to decide what review we will do, but I expect we will be focusing on content from Chapter 17 (Sampling Distributions of Means and Proportions) and Chapter 20 (Type I/II errors and Power), as well as Unit 4 (Probability), as these are all areas that students historically have had a little more difficulty with. I will post again on Monday with our first lessons.

## To my Intro to College Algebra students:

Since our course does not end in a standardized exam, we have a lot more flexibility in how we adjust to this closure. Per the district’s recommendations, I will not be attempting any new instruction until at least Spring Break.

Our plan will be to review some of the content from throughout the year, including the exponential functions from the current unit, as well as rational expressions, rational exponents, and complex numbers from previous units; things I know many of you had some difficulty with. Your first lesson will be posted on Monday, but in the meantime I recommend you log in to IXL (see this page for log-in instructions), and work on any of the starred modules, but especially the following (click these links after logging in, or search for the three-character code in the search bar at the top):

## Stay Safe. Stay Sane. Stay Inside.

As cliche as it sounds, we are all in this together. I miss you all, and I hope we can see each other soon.

# COVID-19 Closure Updates (Week 1, Last updated 3/18, 8:30 am)

Update (3/18, 8:30 am): In anticipation of any distance-learning measures the district suggests (and also to check in about how you are doing, my dear students!), I’ve made a Google Poll that I’m asking all students to complete. I’ve also added a pair of videos to the Students/Families section below for some explanations for how a virus like COVID-19 spreads (InCA students will recognize one of them!)

Update (3/17, 2:30 pm): The ICSD has updated their Coronavirus page with a section of Frequently Asked Questions about the school closure. Of note:

• Discussions about developing instruction are ongoing. There is a mandate from Governor Cuomo’s office that schools “need to devise a plan for alternative instructional options.” The district is attempting “to create a plan to provide students with supplemental learning opportunities through the lens of equity and access.”
• The report card/progress report sequence is suspended. Your progress report grades are available in Schooltool, but paper mailings will not be going out anytime soon.
• No student will be allowed access to any items they left at school until Monday the 23rd at the earliest.

I’ve also added a link to the AP Statistics section below for finding up-to-date information about Collegeboard decisions.

Update (3/17, 12:00 am): I’ve updated the list of links for students/families at the bottom of the post to include a Google document with a list of local restaurants and their current status.

Update (3/16, 7:30 pm): IHS will be going into “plant shutdown” mode at 2:00 pm on Tuesday, 3/17. This means that ALL school operations will be shut down, and teachers and students will not have access to the building until Monday the 23rd at the earliest.

Hello students!

Well here we are, living together in a moment of human history. In all likelihood, this will be one of those generation-defining moments, something that you will talk about for decades to come with those of a similar age, like 9/11 was for me, or the Kennedy assassination or Pearl Harbor was for prior generations.

Currently, all Ithaca City School District schools are closed until April 12, with buildings in “plant shutdown” mode (no entry for students and non-essential staff) from 3/17 to 3/23. I’ll be using this website to communicate updates as I find out about them so that you can stay informed. I realize that keeping up with your schoolwork may not be your foremost concern right now, especially if you have family in areas more significantly impacted with the virus, or have relatives who fall into high-risk categories. But I also hope you understand that we are not on vacation right now. Depending on what the district administration decides, you may be expected to put aside some time to work, study, and keep up with the school routine. Here are some initial thoughts and suggestions:

## AP Statistics students:

Collegeboard has created a page for schools impacted by the Coronavirus. At this time, they are not cancelling any of their exams, but are exploring possibilities of at-home testing (update, 3/16). The page lists several windows for late testing that school districts may wish to take advantage of, and there’s a possibility we may have our test during a later week of May, or even June. I recommend you also follow Trevor Packet on Twitter. He is Collegeboard’s VP for Advanced Placement, and will be publicizing updates as they are available. For now, there is no change to our planned AP Statistics testing date of May 15.

I will most likely be making regular use of the tools in our online AP Classroom through this closure. Right now, I have opened Unit 5 Personal Progress Check: MCQ Part B for both sections. Per recommendations from Ms. Gray, the due date for this assignment will not be until after we return to school from this shutdown, but I will be expecting everyone to complete this PPC eventually for a homework credit. No rush.

As usual, please be sure to go back to the PPC after you’ve submitted to check your answers.

## Introduction to College Algebra students:

We just completed a lengthy project on how a virus spreads through a population, and you saw especially how quickly it can start to spread once the graph passes the flatter part of the curve. I hope you and your families are taking the necessary precautions to do your part and help slow the spread of this disease.

Should instruction resume for us, I will be using a variety of online tools to interact with you and monitor your progress. One such tool we have used already is IXL, and I would like everybody to spend some time in this next week to work on the module Exponential Growth and Decay (TYQ), to a score of 80 or more. Remember that you’ll need to log in to your IXL account via Clever.com to allow me to view your results. See this page for instructions on how to log in.

Per recommendations from Ms. Gray, the due date for this assignment will not be until after we return to school from this shutdown, but I will be expecting everyone to complete this practice module eventually for a homework credit. No rush, though.

## All students and families:

We live in interesting times. As Michael Levitt, biophysicist and 2013 Nobel prize winner for Chemistry has said:

“EVERYTHING WE DO BEFORE A PANDEMIC WILL SEEM ALARMIST. EVERYTHING WE DO AFTER WILL SEEM INADEQUATE”

I invite you to read this message from concerned physicians for a calm, but very frank and urgent take on what the current precautions the ICSD and others are taking are meant to do. The Washington Post has some interesting simulations showing the impact of what social distancing can accomplish in the pursuit of “flattening the curve”

• Please check the ICSD Coronavirus page (and the Tompkins County Health DepartmentCDC, and NYS Department of Health pages) for information and updates about the virus. The Ithaca Voice also has a comprehensive page of local closings and information.
• Added 3/18: The online news site Vox has produced a useful short video about Why fighting the coronavirus depends on you. I also highly recommend this 3Blue1Brown video about the models mathematicians use to track the spread of a virus like COVID-19.
•  If you need meals: Meals are available for any student Monday-Friday from 8:00-9:00 a.m. and 10:45 a.m.- 12:15 p.m. in the parking lots and bus loops at six locations: Beverly J. Martin Elementary School, Caroline Elementary School, DeWitt Middle School, Enfield Elementary School, Lehman Alternative Community School, and South Hill Elementary School (more information online here)
• The leading local broadband internet provider, Spectrum, is offering free broadband and Wi-Fi access for 60 days to households with children in grades K-12 or in college for those who do not already have a subscription. Families can call (844) 488-8395 to enroll. Installation fees will be waived for new student households, the company said. Spectrum said regular pricing will take effect at the end of the 60-day period if a customer doesn’t cancel or change the service. (from Syracuse.com)
• AT&T as also vowed “Not terminate the service of any wireless, home phone or broadband residential or small business customer because of their inability to pay their bill due to disruptions caused by the coronavirus pandemic” and “Waive any late payment fees that any wireless, home phone or broadband residential or small business customer may incur because of economic hardship related to the coronavirus pandemic.” (from AT&T)
• See this Google Document for a list of currently-open local restaurants and their delivery/take-out status. Many dine-in restaurants are offering curbside pickup.

As I find out more information that might be useful to you, I’ll post it here.

# AP Statistics Assignment for 3/13

We will have our Unit 5 test next week, currently scheduled for Tuesday, March 17. Your review assignment, due Monday, is to read the unit recap on page 562, then do exercises 5, 6, 11, 12, 18, 30, 31, 37 from pages 562-568

# AP Statistics Assignment for 3/12

Find my solutions to the #MeToo question from class here (see yesterday’s post for my finished version of yesterday’s notes).

From chapter 21, do exercises 19, 21, 24

We’ll be having our end-of-unit test soon (currently scheduled for March 17). Your review assignment, due Monday, is to read the unit recap on page 562, then do exercises 5, 6, 11, 12, 18, 30, 31, 37 from pages 562-568

# AP Statistics Assignment for 3/11

My completed notes for the example we started in class today can be found online here, and a video of me finishing them is posted here.

For tonight, please work on exercises 6, 9, and 27 from pages 557-559

# AP Statistics Assignment for 3/10

We’re nearing the end of Unit 5. For tomorrow’s lesson to go a little more smoothly, please pre-read chapter 21, pages 541-556, about inference procedures for comparing proportions.

# AP Statistics Assignment for 3/6

We will have an in-class Investigative Task tomorrow. It will prioritize the content of Chapter 20, but you should expect part of this will be completing a confidence interval or hypothesis test procedure from a previous chapter. Be advised that this will be a closed notes/closed book task. You may refer to your “Way of the Hypothesis Test” sheets for this task.

From the exercises in Chapter 20, please complete 15, 19, 27, 31, 35

# AP Statistics Assignment for 3/6

In order of priority…

1. Complete the Chapter 20 classwork sheet you started in class.
2. Finish reading Chapter 20: pages 527-535
3. From pages 536-539, do exercises 8, 11, 16, 29, 34

# AP Statistics Assignment for 3/5

We’ve started work with chapter 20, about some of the finer details of hypothesis testing that we didn’t get to yet. Tonight, please start reading the chapter, pages 516-526 specifically.

From the exercises on pages 536-537, do 4, 5, 7, 13, 17

# AP Statistics Assignment for 3/4

No homework tonight due to the test in class today.

# AP Statistics Assignment for 3/3

Study for tomorrow’s Ch 17-19 test! You got some review materials in class today, and you can post here or send me an email with any questions you have before your test tomorrow.

For a quick explanation about question 10d (“What is meant by 90% confidence”), check out this video.

# AP Statistics Assignment for 3/2

We will have a test on chapters 17-19 on Wednesday, March 4. In preparation, I’ve selected some questions from each chapter. Your homework is to do at least one exercise from each chapter. I’ll provide you with solutions to all of them.

• From chapter 17 (pages 468-471): 23, 25, 53
• From chapter 18 (pages 491-492): 22, 34, 36
• From chapter 19 (pages 514-515): 22, 24, 33

I invite you to try all of these problems!

# AP Statistics Assignment for 2/28, plus Test Warning

We will have a test on chapters 17-19 later this week (currently, it is scheduled for Wednesday, March 4). In preparation, I’ve selected some questions from each chapter. Your homework is to do at least one exercise from each chapter. I’ll provide you with solutions to all of them.

• From chapter 17 (pages 468-471): 23, 25, 53
• From chapter 18 (pages 491-492): 22, 34, 36
• From chapter 19 (pages 514-515): 22, 24, 33

I invite you to try all of these problems!

# AP Statistics Assignment for 2/27

We finished our first example of a formalized hypothesis test in class. We’ll be doing many more of these, so keep the “Way of the Hypothesis Test” sheets you got in class handy! For homework, finish reading chapter 19, pages 500-510, then from pages 512-513, do exercises 7, 9, 12, 13

# AP Statistics Assignment for 2/26

Today we looked at the totally real and not-at-all pseudoscience of dowsing, collecting some data to help us check whether there is merit to the method of finding water.

Tonight, start reading Chapter 19 from the text, specifically pages 493-500, up to the section titled “Alternative alternatives”

From pages 511-512, do exercises 1, 3, 5.

# AP Statistics Assignment for 2/25

From pages 490-492, do exercises 18, 20, 29, 31, 35

# AP Statistics Assignment for 2/24

Read pages 480-488 from the textbook (finishing chapter 18)

From page 489, do exercises 5, 7, 17, 19, 21

# AP Statistics Assignment for 2/14

Over break, please finish your thinking about the Hershey Kiss drop activity we did in class today.

In addition, work on exercises 38, 43, 44, and 45 from chapter 17 (some more practice with the Central Limit Theorem) and start reading Chapter 18: pages 473-479