Wouldn’t it be awesome…

Desmos,

I can’t stop thinking about the great stuff from Penny Circle, Waterline, Central Park, Desman, and Function Carnival. Specifically the collaboration; the crowd sourcing of data and responses!

In Penny Circle, I love the fact that the student gets to do a few instances of selecting a circle and filling it with pennies. Then the data is grouped with the rest of the class….and voila!! we have a scatterplot!

I would love for this option of crowd sourcing content as a regular option. Wouldn’t it be awesome for when we complete the Vroom Vroom activity or the Barbie Bungee activity that we could ask students to record a few pieces of data in their table….like this,

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but up on the projector the class sees this?

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Wouldn’t it also be awesome if I asked the class to draw me a line with slope -2 ….the student would see theirs….

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but we would all see this?

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I’ve been using PearDeck for some lessons lately and we’ve been able to crowd source some stuff like..

Put the moveable point on A solution to the inequality f(x) > 40

Day 23 - Pear Deck!!

Day 23 – Pear Deck!!

We’ve also been able to crowd source by the old fashion way…….everyone write their points up on the board then we can all graph. This is still great don’t get me wrong……i’m just wishing!

Wouldn’t it also be awesome when we go to make Math Art with our Function Art project…..we all work together to make a picture like…

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I know that Texas Instruments has TI Navigator which tries to link students up ……but in my opinion it’s not as nice or easy as Desmos is to use!!!! Maybe this is already possible in Desmos and I just don’t know it. Or maybe there is something else out there……but I doubt it.

I would love it if my class could all work together…..keep our technology social! These are just some wishes! Love Desmos no matter what!

Changing the Test!

I’ve never been comfortable with how we traditionally evaluate students in math. It has bugged me that I test on a specific date, then move on. We tell the kids to not forget that material, but never really give them credit for doing that!

Yet our curriculum documents say we should do otherwise…..

First one,

From The Ontario Curriculum, Grades 11 and 12: Mathematics, 2007 (revised)

Screen Shot 2014-11-02 at 3.12.02 PMThis document DOESN’T say that students will know __________ skill by Nov. 3 (or any other date). We have traditionally done this! We have set a unit test after we have taught the unit…..the student prepares for the test; writes the test……then they concept and skill is not assessed or evaluated formally again until the exam!!!

We’ve got all year/semester to get them to demonstrate these skills. We should have an assessment/evaluation policy that reflects this.

Second one,

From Growing Success:

“The primary purpose of assessment and evaluation is to improve student learning.”

and…

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Our main goal should be to help students learn math “better”!!! Our assessments should be apart of this!

Traditional teachers are going to argue “We need to prepare them for university”—- My argument is that I want them to know their stuff well! I want to show them that they can always do a little better. I want their minds to grow, their math knowledge isn’t static. (Also, I remember from my university days, professors saying that if you did better on the final then they would take this mark as your whole mark…..rewarding learning!)

My new philosophy:

Everything is upgradeable!!

Here is what I’ve been doing for grade 12 evaluations lately:

1. I still have the test on test day! No different than before.

2. I mark the test and hand it back. I remind the students that all skills/concepts are upgradeable!!

3. The students then sign up for help/upgrade session at lunch, or down time during class.

The student is to bring their test/evaluation with them….we go over it together discussing missed concepts. We pick together curriculum expectations that they can upgrade.

Say, for example A student received 1 out of 4 on a question testing the skill  “Solving polynomial Equations”. We discuss the mistakes and the students can re-do that question. Once that question is correct I give the student another, new question that tests the same concept. If that student can prove they know the concept two times in a row….then I give the original test marks to the student….they now get 4/4 on that question. (I keep helping and giving questions to the student until they can complete it on their own. )

5. I then go into my markbook and change the marks!

Here is a recording sheet (nothing revolutionary) I use so that I can track their upgrades. Most upgrades span multiple days.

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They can do this for any concept/skill from the test….they can do this for every test.

So can a student get 100% on a test? My answer: Sure! Does every student in my class get 100%  Not even close…. I wish they would! They have that option.

If my students know and can demonstrate the skills and concepts of my course consistently why wouldn’t I give them full marks!!! Their mark is supposed to represent their learning and knowledge…..not their work ethic!

The students’ attitude toward test days have changed. Some are working harder before the test so they don’t have to spend their lunch time upgrading…..some have told me their anxiety towards their tests have been lifted!

Other teachers who helped my with my thinking:

Dan Meyer:  The Comprehensive Math Assessment Resource

Evan Weinburg: Standards Based Grading: Bridging the Gap

Most recently: Mary Bourassa: Rethinking Tests – who inspired me to write this post.

This process is most likely debatable and definitely can be improved upon. I am still learning this process myself and would love to discuss these ideas, so please leave some feedback!

 

Describing Relationships – Active Learning

We have started discussing graphing relationships in my grade 9 class.

Our lesson goal was to

I can…

describe a situation that would explain the events illustrated by a given graph of a relationship between two variables

I have loved Graphingstories.com and wanted to incorporate them…and some of Dan Meyer’s graphing stories …into my lessons! This is the perfect place…..here’s how we did it.

Day 1: We start with an estimation…..

I play the video (Poor quality) about 6 different glasses filling up with coloured water.

I pause it after a few seconds and ask: “Which glass will fill up the fastest? Draw the shape of your winning glass on your whiteboard” We take some guesses from the class…..then watch some more video. About 3/4 of the way through I pause again. “Anyone want to switch glasses?” Some of them will switch and some stick to their original guesses. After watching the final result…..I get some boos and “You tricked us”. We discuss why they filled up at the same time….which leads us into saying Volume of all  = Same and comparing the volume of the glass vs. time……which leads us to discuss the rate at which the glasses are filling = Also Same!

From there we jump right into Desmos.com and the WaterLine Activity.

This is one of the most engaging tasks on this topic I’ve seen. The predictions of height of water vs. time and the ability to self correct is amazing! As the kids work through the activities I always take time to discuss their answers to:

 

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We have a great discussion on how this new graph looks and I get them to draw one one on their whiteboards. (wish Desmos could add that prediction/check into the activity!).

WaterLine and its discussion takes the remaining of the period to complete.

Day 2: Graphing Stories & Distance Time!

We begin by watching and drawing different graphing stories from Dan Meyer (Elevation, Distance vs. Time). Check them out and download them! (He doesn’t even charge $4.99 for them!).

We then use Vernier’s LabQuest2 and the motion detector (borrowed from Science). Students walk in from of the detector and the rest of the class watches in real time how their distance changes vs. time. We get the kids to walk slow….then fast, walk away/towards….so they see how the graphs relate to real motion!

 

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Lastly….. The kids are to create their own video graphing story and have peers draw the graphs to match.IMG_2664-0.JPG

  1. They pick a card that has some sort of motion described: “student walks fast away….then backs up slowly”
  2. They create a video that shows that motion. They use their phones or our iPads to capture that motion.
  3. They trade that video with another group and then they have to draw the graph to match!
  4. They keep trading and graphing different relationships!

The first time I ran through this series of activities I freaked out after because we just used two days and the kids didn’t solve/answer any problems from the textbook/worksheet! They don’t have anything written in their notes!!!!

 

IMG_2667.JPGEvery year I realize that there is great thinking and reasoning going on here! We have great discussions on what the graphs should look like. We need less notes and more active learning!! The kids are completing problems because they created them! They lived them! I feel they have understood the main concept at a deeper level!

[UPDATE: April 2015 ] – Read the modifications for Day 2 — the inclusion of a gallery walk. 

anyways……thats all for now!

 

 

 

 

 

 

 

 

Pumpkin Time Bomb – Data Collection

I was watching Jimmy Fallon on the Tonight Show last week and saw this…

After wanting to try it myself (I did on the weekend with my kids – messy) I had a “wonder question.” I wondered would it be possible to predict accurately the number of bands to destroy any pumpkin?

After a few tweets:

 

I decided to gather some data…..maybe other math teachers out there would blow up a pumpkin and send me the data. I put together a form/activity for people to fill out. See the form below.

So….when the data files in I will send out a spreadsheet so teachers can analyze the data with their class. Hopefully we will see some relationships….and be able to predict how many rubber bands to blow up pumpkins next Halloween!

Here are some videos so far….

 

Please contribute to the data

Fill out the form

Results

Kyle Pearce (@mathletepearce) has written on his blog about this activity. Check it out!

Here is the open spreadsheet with all entries so far

Here is a desmos file showing some relationships (or non-relationships)

This is my class and our result —- 407 bands