Math Classroom Conversations - IMP Making Friends with Standard Deviation

Math classroom conversations

#mathtalk

The things I have been hearing my students say during this activity...

"Why is the standard deviation the same?!?!"

"Why is the mean so high this time?"

"What?!?!"

"The mean for Set C is...."

"I disagree."

"I agree."

"Is this what you got?"

"Andrew shut up!" - I had to include this one just to "keep it real."

"It says explain why your pattern..."

"No pattern occurred." to which I did a loud "AHEM" and they said "Are we supposed to get a pattern?" 

So...my students had this group investigative task and I helped them to get started. BUT...in this case I made them read the directions out loud and then I asked another student to repeat the directions in their own words AND we did an example with a data set on the board. (This sentence might make more sense if you read this post entitled "Read and Follow Directions!") Then I told them that I was going to sit down and if their group had a question the ENTIRE GROUP had to come to my desk. I usually roam around the room but I believe that I sometimes have students ask me questions that they should really be asking their group members (just because I am close).  I did have a couple of groups come to me to settle an argument...isn't it awesome that they were arguing over math concepts!

Intro to Systems of Equations with Gallery Walk

This year I ran across a document in my Google Drive that Sonya New and I made in order to introduce solving systems of equations. I decided to do this on the first day back after Christmas break in order to get us "back on track." We have solved systems algebraically and had begun discussing the substitution and elimination methods the week before school let out.

I loved doing the assignment. I only had 6 groups but I still wanted to have them graph all 8 systems so a few groups had 2 systems to graph. I did not call them systems. I just told them to graph both lines on the same coordinate grid. I first allowed them to graph the lines on graph paper and then I had them put them on chart paper. Afterwards I assigned each group a different color marker to write with and had them do a gallery walk and put feedback on the graphs. If they agreed with the graph they put a check mark. If they thought there was an error they had to place an x and then tell what they thought was wrong. The last direction I gave them was to write down the solution to the system of equations. (We have been talking about solutions for systems of equations ALOT in class. I have even OPENED and CLOSED class MULTIPLE TIMES by randomly calling on a student and asking them, "What is the solution to a system of equations?" AND offered candy when they get it correct!! Many of them still don't know. I accept various answers: an x and a y that make both equations true, the point of intersection, an order pair that works for both.... It hurts my feelings but I still haven't gotten it to "sink in.") I had one student in the room that asked me if I meant for them to write the ordered pair down so eventually everyone caught on. Almost every group asked me what I meant by the solution but I would not tell them. I told them to discuss it within their groups because we had talked about it in depth before Christmas. Anyway...after they completed their gallery walk we "debriefed" as a class and settled any differences of opinion. It was a wonderful way to review graphing and reintroduce them to solving systems of equations - we had one no solution and one infinitely many solutions so we also discussed what those would look like algebraically. I did have them solve a couple of the solutions algebraically (using substitution) at the end of class.

Here is the document if you would like it.

OBSERVATIONS:
1. Even my best students needed the graphing review. I had one of the top students in my class put his y-intercepts on the x axis!! I want to do a better job of spiraling my algebra class. I love that our Meaningful Math Algebra books include graphing in every single unit! I hope to incorporate more spiraling review as my warmups this semester.

2. It scares me how much my students forget AND it bothers me that I have to move on when I have so many who have clearly not retained what we have learned.

3. Many of them wrote that the solution was 5 and 2 when they really meant (5,2). They think I am being picky when I make them write the answer as an ordered pair.

4. Students like the opportunity to get out of their seats! I did have some really good student dialogue and I feel that it was a productive first day back after Christmas:)

2016 MTBoS Blogging Initiative - Why?

I am excited to be joining the MTBoS Blogging Initiative this year. I started blogging about a year and a half ago. I was teaching a problem-based curriculum for the first time and wanted to record my "teaching transformation." I really started blogging for myself - so that I could look back at how the lessons went and use my reflections for future years when lesson planning. I feel like viewing blogging as a tool for me instead of being concerned about how my writings are being taken by others was THE BEST PART. However, Shelley Montgomery, the instructional partner at our school, encouraged me to go ahead and share my blog posts on Twitter. Through conversations I had with her I began to realize that even if one other person could benefit or be encouraged by my writings that it was worth it. Tracy Saltz...whether you realized it or not...you were that one person. We met on Twitter because you were also teaching the IMP Meaningful Math curriculum for the first time. Since then I have met a few others at workshops or via comments on my blog or Twitter that have enjoyed reading my posts. It is an encouragement to think that I have contributed in a way that was helpful to other teachers. I have learned so much by reading the tweets and blogs of other teachers and I did want to contribute instead of just being a "user."

So...why should you consider joining this blogging initiative? I think that blogging helps me to reflect on my teaching practices and organize my thoughts for lesson planning. An added bonus is for you to share your thoughts with other teachers so that they can learn from you and/or be blessed to learn that they are not the only ones that have similar struggles. I think that everyone benefits whether from the collaboration/encouragement of other teachers OR the benefits of reflective writing.

IMP Alice Day 8 - Having Your Cake and Drinking Too

When I saw that the teacher's guide allowed 60 minutes for this activity I thought there was no way. I thought we would get through it quicker...haha! We didn't even finish and we had OVER an hour. This activity helps the students to explore and HOPEFULLY discover the rule for dividing powers with the same base. I love it! It is really revealing the lack of number sense that my students have. The questions are not really that difficult...that is why I thought we would breeze right through.

I have allowed myself to "sit" on this activity and not rush it because I really believe it might help to cement the concept. I am going to be absent tomorrow from my classes and I have some good exploration worksheets on exponents to leave for my students. However, it has reminded me how blessed we are to have found a book that combines the exploration with the context. Someone had a wonderful imagination!

**Update 3/7/15** Original post was made 3/16/15
This year when I taught this lesson I took the time to help the students to explore #2. I did not let anyone blurt out an answer when we first started looking at it. I have been using the random integer generator on the TI-83 (which is awesome but I just now figured out how to do it!!) to call on students. In my classes I just happened to call on students who were unsure of what to do so I just asked them to start by making a guess. I told them to tell me a number of ounces of cake and a number of ounces of beverage and then I showed them how to "test" their answer to see if this would give an answer where Alice's height was multiplied by 8. Then I randomly called on more students. The first 3 students guessed more beverage than cake (ugh!) so I asked the next student to make a "conjecture" on whether or not more beverage than cake would EVER allow Alice's height to be multiplied by 8. My 2nd class arrived at the correct number of ounces much faster than my 1st one did but I feel that modeling to the students how to "guess and check" was valuable. I am always telling them not to ever erase their guesses. I want them to learn to look back over the ideas that didn't work in order to help them to identify new theories that might work!! Anyway...the day I taught this lesson this year I felt really good about what we had accomplished:)

Reflections after 4 months of IMP Meaningful Math

I am totally sold on the idea that anyone who is purchasing math textbooks should take a hard look at the IMP curriculum - whether your district uses the integrated or the traditional approach. I feel like using this curriculum has made me become a better teacher. I know that I am doing more with my students than I have ever done before.

When I first started working through the book (and I still feel like I am a newbie for sure!) I tried to be so literal. It is recommended for you to go through the curriculum without supplementing (especially the first time through). Because I have not been through the book before I had moments where I was unsure whether or not I should introduce a concept - especially technical vocabulary or formulas - because I didn't want to mess up a future lesson where the students would have the opportunity to approach problems with a more intuitive, context-driven method. For instance, in Overland Trail when students are asked to write the rules for the graphs I had several students (even after being introduced to slope-intercept form) who used a table and worked the pattern back to the point where x=0 in order to find the y-intercept or starting point. Teaching them this curriculum has shown me what it really means to allow students to use different approaches for solving problems. I do not think I understood what that meant prior to teaching this curriculum. I allowed students to "approach" solving equations from different ways - if they wanted to solve an equation by getting the variable on the right side instead of the left I allowed them to do that. HAHA! I have now seen what different approaches look like in a classroom. I truly have some students using formulas, others using tables or graphs, and others writing a paragraph which just explains how they reasoned through the problem. What an education I have had!

Another thing I am realizing is that BALANCE is a key. There are going to be times that we need to stop and give notes in which we make the connections to the "naked math" (my AMSTI buddy Melanie Griffis calls it that!) like they will see on state exams or the ACT. I can remember when Jim Delawder made the comment in our training session that what we will do with the curriculum is so much harder than the way they are tested. Now that I have taught it a little while I totally understand his comment. However, if the students don't make the connections between the IMP-style problems and the standardized test style problems then their math ability will not be reflected in their test scores or future math courses. I also remember Jim telling us in our training that he usually pulls sample questions to practice with the students to show them how questions covering those concepts will appear on standardized tests. We just want to create a system that works for us. Sonya New (my often-mentioned algebra teaching buddy) and I have a goal of identifying places in the curriculum where we take a pause and teach the "naked math" version and practice the standardized-test version.

                    


Lately I have been thinking about how I have always found the need to find materials to supplement the textbook we were using. The difference now is that it is so much easier to find some practice worksheets instead of trying to find or create activities that build concepts around a context. Most of the textbooks I have used in the past were mainly a collection of "naked math" worksheets with a few application problems that were stand alone. In the past I rarely ever assigned those application problems. My students seemed to struggle with the basic problems so I rarely ever went to the "next step." Now that I am teaching with the problem-based curriculum that teaches everything within a context things are so different. The students engage with the problems because of the context.

I am going to publish this post because...I just am. However, I have so many thoughts swirling around in my head that I would like to express but I am at a loss right now. I may add more later:)

IMP Cookies unit problem with a "New" twist

The unit problem in IMP Cookies has to do with finding the maximum profit for a bakery when they meet constraints pertaining to oven space, preparation time, amount of dough and amount of icing. Throughout the unit the students do activities that give them all the information and tools they need in order to answer the unit problem. My often-mentioned teaching buddy Mrs. New has done a couple of really cool things with this unit problem. She is having the students to present their findings to a panel of administrators, our instructional partner and another math teacher. They are going to have to tell them what amount of iced and plain cookies will give them the highest profit and prove to them why.

The BEST part is the idea that Sonya had of telling the students that they could change ONE and ONLY ONE constraint. She has told the students to make a proposal to the panel of which item they should increase. Should they buy another stove, hire another person, or buy more dough or icing? There are some constraints that even if their limits are increased they will not increase the profit. I LOVED this idea. I am doing the "lazy version" of Sonya's activity and just having the groups present to the class. I have tried to encourage the groups to be creative as to why they chose the constraint to increase. I told them they could make up a story to go along with it in order to convince us that it is the best thing to do. However, they are also supposed to have a new graph that reflects the changes in the constraint. I had students to realize today as they were preparing that they chose to increase an item that did not improve their profit. Their feasible region was still the same.

I love teaching with creative people! Sonya is ALWAYS coming up with really cool ideas and activities. I will update this post after her groups have done their presentations...I'm sure she will have some awesome things to share.

UPDATE after presentations:
Things we like:

• We love the problem...especially having the students change one constraint and then explain if it improves the profit!
• Mrs. New loved having the students present in front of a panel
• Mrs. New's students loved that they went in a separate room to present...no other students were present during their presentations
• Mrs. New required them to have a digital presentation - most used Prezi or Powerpoint

Improvements:

• The students didn't seem to fully understand what we wanted from them. We need to somehow do a better job of explaining the purpose.
• To address the above bullet...Ms. Whitt mentioned she wished we could model a presentation for the students...maybe use the Picturing Pictures activity to model a presentation, then let them practice presentations in the classroom using Rock 'n' Rap
• Remind the students to explain the problem like nobody has a clue what they are talking about...give some background info...

The students presented in this small "conference" room

IMP Cookies - Rock 'n' Rap, formative assessment and collaboration

Rock 'n' Rap is an activity that talks about producing rock and rap albums. The students will once again be led to find profit lines which should help them on solving the Cookies unit problem. There are 3 constraints this time. Also some of them shade below but one shades above so there is a little variety.

When graphing the inequalities Sonya New, my IMP teaching buddy, has stressed with the students that one way to graph the lines is to find values for x and y that make the equation true (they really do this by trial and error using number sense). I love that she has done that (even though I have talked mostly about using intercepts or slope-intercept form). She has taught SI form and graphing using intercepts also, but she says alot of her students still graph by finding ordered pairs that work.

When I did the problems with my class we said that there had to be more rock albums than rap albums. However, smarty pants Sonya corrected me (I hate when I'm wrong) and told me that it should have been rock is greater than or EQUAL TO rap. When you read the paragraph about this constraint it says that the company promises that it would not release more rap than rock. Then it goes on to say that the company is more closely related to rock music in the public mind. Even though I know she is right I could really make an argument about why I chose to publish more rock than rap! (But the mathematician in me knows she is right...dang it!)

Lastly, I had my students put this activity on chart paper. I have been in such a rush lately I haven't done this as much. It made me realize that having them put it on chart paper "makes it real" for the students and they invest more in the problem. Also, I get the opportunity to formatively assess at a glance by reviewing their work. The picture below is of a group of students explaining their findings from the Rock 'n' Rap activity.

IMP Cookies - Profitable Pictures...very important

This activity builds off of Picturing Pictures. Mrs. New and I decided to draw a graph for Picturing Pictures and make copies of it so the students would for sure have an accurate graph on which to do their "profit lines." It is so wonderful to "share a brain" with Sonya (Mrs. New) because she has already taught Cookies twice. We are needing to trim as much as possible because we started the curriculum late. Therefore she knows when there is an activity that you should not skip and I need to remember NOT TO SKIP PROFITABLE PICTURES.

This activity gives students the tools they need to answer the Cookies unit problem. The students should discover that the profit lines are parallel and that the higher the y-intercept the higher the profit. Therefore they need to extend their parallel lines until they find the highest line that clips a point in the feasible region. After trying to get my students to explore this activity over 2 different days I finally EXPLICITLY told them that the maximum profit is going to come from one of the corners (if you will) of the feasible region. Sonya and I  also EXPLICITLY told them that the methods we used to discover the feasible region for Profitable Pictures are the same as what they need to use to solve the Cookies problem.

Profit Lines...

When I first started the curriculum I was so diligent to read through the teacher's guide for almost every lesson. So far this semester I have not been able to do that! It is a long story... Anyway, I really value having someone (who just happens to share a planning period with me) to collaborate and discuss lessons with! It makes such a difference. Sonya is totally committed to our "new curriculum" and we have so many aha moments that we get to share with each other.