Showing posts with label Best Fractions. Show all posts
Showing posts with label Best Fractions. Show all posts

Monday, June 30, 2014

Fun With A Name Tent

As I ask my new students to make a name tent with an 8.5" x 11" sheet of paper on the first day of Summer Academy, I think, "Let's have a little competition." This wasn't in my lesson plan. Ha!

If you haven't noticed, I have become obsessed with classroom competitions. Here are two posts in case you missed them:
Fun With A Dot and A Line
Fun With A Sticky

Therefore, I'm adding today's post of Fun With A Name Tent to the "Fun With A" series. A name tent looks like this:

I use name tents for teacher trainings or on the first week of class with students so I can quickly learn their names. Right as I tell my new students to make a name tent, I announce, "Let's see who can fold their name tent into the best thirds?"

Game on!

If you have read (or remember) my two posts from above, you know this activity will go something like this:

  • Students get time to create their best thirds.
  • Students decide in their group (of four) who has the best name tent.
  • Students vote (whole group) by eyeballing the tents and make a prioritized list. 
  • Students define how we decide the best thirds.
  • Students define what to measure.

Here are some whiteboard shots of my lazy writing as I quickly jot down what students say. It's fascinating.

I handed each group a name tent that was in the running for the best thirds. Some groups used inches and some groups used centimeters to measure.

I didn't care nor tell them what unit of measurement to use. I walked around and questioned which unit of measurement they were using and asked them to explain why they chose that specific unit of measurement. We later had a discussion (almost arguments) about which made more sense for this task. Most students eventually were convinced by their peers that centimeters would be more accurate here. My second class had two tents that were extremely close, but couldn't tell which was better:

We had to compare 0.5 centimeters to 0.25 inches to see who had the smallest error, Leyla or Srihitha? It was awesome! We had to decide if we wanted to convert the inches to centimeters or vice versa. You can see that Leyla won by 0.135 centimeters. DANG! Those are some good folds.

Next, I introduced them to Estimation 180 by estimating my height. They'll be keeping track of their estimates in their compositions books.

My favorite part was this exchange:
Brianna: Will you tell us your height?
Me: No.
Brianna: What?
Class (disappointed): Ohhhhh!
Brianna: That's not fair. Then why are we doing all this work?
Me: I understand. I said I'm not telling you my height.
And then BAM! I take out my measuring tape!
Me: Brianna, stand on your desk chair and you can measure how tall I am.
Brianna: Oh, cool! 
We proceed to estimate my wife's height and then we estimate the TOTAL height of the class. This was fun. I asked, "What would be useful to know and how would we go about getting it?" borrowed from Dan.

My favorite was Mansi. She suggested that we multiply the number of students (20) by 5 feet since most students were about 5 feet tall. Then we add or subtract the difference of each student's height in relationship to 5 feet. We started a Mansi column in our Google spreadsheet. This would make for a pretty cool lesson on integers.

Before we went outside, I had the students get in order from what they thought was shortest to tallest. If you keep track of the data in a spreadsheet, use the spreadsheet to verify their order: another great tool from a spreadsheet.

With this organized data, you could do a lesson on mean, median, mode, and range. Even mean absolute deviation if you're up to it. Another great part was Dylan noticing a student was absent today. "We don't know the height of the kid who isn't here today."

You could take this task and apply the mean or the mode. Have students predict the height of the absent kid. Furthermore, you could segue into probability if you like. What are the chances the absent kid is the mean height? the mode height?

How sweet of my first class, they wanted to include my height in the total height. We went outside and looked for an area long enough to fit our calculated total height of approximately 103 feet.

We went a little bit past 103 feet because some students were considerate enough to avoid placing their feet next to someone else's head. The dismissal time was rapidly approaching so I let it slide. One clap on three for Reese. She had the closest estimate of 102 feet.

One. Two. Three.

CLAP!

Thirds,
1050

Saturday, January 4, 2014

Daily Something [WCYDWT]

#WCYDWT

What can you do with this?

Why would a teacher use this?

How would you use this in your class?

What would you add? subtract? replace? other?

How would you use the information from student performance on this?

How could this be used as a pre-assessment? an assessment? an intervention?

Take a few minutes to complete each day. What do you notice?

Hint:
*  **  ***  ****  *****  ******  *******  ********  *********

Answer as many or as few of these questions... or feel free to add your own.

This:

Thanks in advance!
843


Saturday, September 14, 2013

Your BF!

The first full week of school is done. I can breathe... a little.

I'd like to share a lesson we (my awesome 7th grade teammate and I) came up with this week when reviewing multiplication and division of fractions with 7th grade students. It actually went quite well and was fun. Simply titled, "Your BF!"

If we said "fractions" to students, a majority of them would instantly shut down. Instead, I titled their notes at the top with "Your BF!" and it looked like this:

Of course, some kids, only reading the title, responded with:
"Your best friend? What!?"

Then, some kids continued to read and saw it. That word. That terrible, miserable word. That word that has a paralyzing affect on students. Almost like you just told them their dog was run over by a car, or that Christmas was cancelled, or [insert some terrible event you dread]. That word is FRACTION.
I quickly responded to their whining, groans and moans by saying, "Let's make this a little friendly competition. Let's see who can draw the best half. Use the rectangle I gave you to draw your best half."

All of a sudden, it's a game. There's a challenge.  No rulers or measuring devices allowed. They must freehand the fraction. As they're working on their BF (Best Fraction), I announce, "I'm looking for two volunteers who think they've drawn the best half."

Immediately hands shoot up. Kids start to yell at me, "Pick me Mr. Stadel!"

Everyone feels so confident about drawing a half. I yell over them, "I'll put it up on the document camera and you all can be the judges today."

"Oh! Pick mine."
"Me! Me! Mr. Stadel, pick me!"

I pick two students and they walk their papers up to the camera. The class is critiquing each classmate's halves. Some students, from their desks, quickly blurting their half is better. I then display mine (having used a ruler) just so they could see an ideal half. This is where I wish I took pictures of student work. We put it to a vote. I noticed some kids just voted because their friend is up there or they might not like one kid, or whatever. Therefore, in hindsight, I should have specified that they vote for the fraction who's line looks closest to the middle and splits the rectangle into two equal parts. Even more hindsight, I should have asked students what they think would constitute a half. Next time!

Repeat the competition with a best third and a best fourth:

We compared three student papers for the third and four student papers for the fourth. After our competition, we transitioned into the visual representation of multiplying a half by a fourth.

At first, this visual seemed a little confusing to some students, but we walked through it together. When circulating the room to check for understanding, I could see better understanding on the second example in which they completed on their own.

After all of this, here are a few favorite moments:

  1. When moving onto the best thirds, I heard a student say, "I don't get this." They must have looked at their neighbor's paper. Within seconds they responded with, "Oh, I get it."
  2. When showing students my half, I accidentally showed them the rest of my paper with the ideal thirds and fourths. They responded, "Ohhhhhh!" Like they just saw the answer key or it ruined the fun for them to see the answers. That was funny. 
  3. One student's paper was not picked, and he turns to a friend and I overhear him say, "He should have picked my thirds. Look at that sexy fraction." I stopped class and he thought he was in trouble. Nope. We had a good laugh as I shared with the class that I've never, in my ten years of teaching, heard a fraction described as sexy. 
  4. When doing the visual representation of multiplying, I said, "Add this to your notes." A student replies, "Oh, we're taking notes?" He was participating and didn't even know he was learning.

Here's the handout, which also includes an example for dividing fractions.

This lesson idea spawned from my Best Halves idea.

Your BF,
336

Friday, August 23, 2013

NEW JOB!!! and some fraction ideas

I recently accepted a new teaching position with a middle school where I'll be teaching 6th and 7th grade math. I was fortunate to be at my last school for about 10 years exploring 7th and 8th grade math: Pre-Algebra, Algebra 1, Algebra 1A, Algebra Honors, and Geometry. I'm extremely grateful for the opportunities, experiences, friendships, and professional growth opportunities the school afforded me. As I advance in my teaching career, I'm very excited about my new position, new school, new students, and new everything. There are many differences between my previous school and my future school... and I welcome them wholeheartedly.

As my future school transitions to Common Core, I'm giddy at the thought of exploring so many wonderful concepts in 6th and 7th grade math. However, I will be working with students that have typically struggled when it comes to understanding math. Therefore, I had a few ideas about fractions I thought I'd like to explore with you.

I'll include all the visuals here, but feel free to go to my "fractions test page" at Estimation 180 to get the full experience. Please offer me some feedback. I'd like to pursue these "fraction" ideas with other items; some easier, some more difficult. Is this something you could use? Is this something worth pursuing?

Question: Where would the cylinder be one-third full?
(Image 1)

We're estimating here. I did not provide any choices because I want students to formulate ideas on their own. Look at their screen and move their finger up and down the screen to find one-third. Come up to the board at the front of the classroom and put a post-it note on the board.

Offer some choices: When ready, click on the image for choices.

Notice I said, "when ready"? Did you have students discuss? point with their fingers? place a few sticky notes on the screen at the front of the room? or something else to get students invested? Because of the restrictions at Estimation 180, this image will currently serve as the next viable step. Now students have a choice. I'm not the biggest fan of this, but it's something. Were there students who were way off because their sticky or initial guess didn't even fall within the given range?

Make a choice and demand reasoning: Why did a student choose "C" instead of "D"? Have students try and convince each other. Argue! Egg them on a little bit. Have students choose a line in which they think the cylinder will reach one-third its capacity.

Do some math? I provide you with the capacity of the glass: 1,170 milliliters. Find one-third of that. Encourage different strategies in your class. Doing the math won't tell students if the answer is choice A, B, C, D, or E, but it might help with later parts of this activity.

Reveal the answer: a really short video.

I have additional video for two-thirds, fourths, and a full cylinder (when using thirds or fourths). I haven't inserted the choices, added a counter, or other after effects. Would this be something you'd be interested in? Please let me know.

Two things:

  1. I also set this up as Red Dot (Active Prompt) activity and it'd be fun to see how students would approach this activity without multiple choice. Then, show the class their results before watching the answer (video).
  2. I'd love to see Dave Major make a slider so students could slide a bar up and down the cylinder. Using a computer or tablet, students could place the bar where they want and without a given range of choices. Then we could see who was actually correct.

What feedback do you have for me? Again, is this something you could use? Should I prepare more at Estimation 180? Would you like to see the remaining fractions and other ideas?

NEW,
723


Thursday, January 17, 2013

Best Halves [Square]

A few months ago Dan Meyer reached out to Timon Piccini, Chris Robinson, Nathan Kraft and me to participate in what would eventually become his Best Midpoint, Best Square, Best Triangle, and Best Circle series of 3 Act lessons. I was honored to be part of a stellar group and great lesson. I love the potential of these lessons and can't wait to use them with my geometry kiddos later this year. Currently Dan and Dave Major have kicked it up a notch with some great interactive play/learning for better best squares, also providing us with an interactive teacher's guide. Check it out: I nearly cried tears of joy upon reading their two posts: Dan and Dave.

Recently, I've had conversations with Fawn Nguyen about fractions and although fractions aren't the spotlight of my Algebra and Geometry curriculum, I'm still fascinated by them and in turn want to help students build their number sense or spatial reasoning. I had an idea to extend Dan's Best series into the realm of fractions and emailed him for his blessing, hoping I'd do it justice. Here's what I came up with so far:


You might notice
it closely resembles Dan's format with very few stylistic differences. "If it ain't broke, don't fix it." That's my motto here. I called on Dan and a few other comrades to make an appearance and compete in this first installment of Best Fractions. This first installment: "Who drew the best half?"

Thanks to Dan, Fawn, Sadie Estrella, and Shauna Hedgepeth for taking the time to contribute. They were great sports! I still don't know who drew the best half yet.

I see a lot of geometry potential here: area, perimeter, midpoints, distance, coordinates, polygons, etc. I'd love to target primary grades with this activity as well (not just secondary), finding an entry level that elementary kids are capable of exploring. I'm not too sure calculating the area of trapezoids would be appropriate for a 4th and 5th grade classroom, but I might be wrong.

I'm not pretending to nail this 3 Act lesson and I'd love some feedback on how you would apply this in your class or make it better. I'm still working on the Act 2 information and will gradually chip away at it over time.  I gathered enough information from the contestants to keep me busy for the next year. I plan to release other installments of Best Fractions, specifically the best half, third, fourth, and fifth of both a square and circle. Just imagine the fun with circles: area, sector area, arc length, degrees, percentages, and more. Stay tuned!

Test it out on your students in the meantime and give me some feedback. Click here for directions and handouts to use with your students.

Best,
420