math · Math and Book Arts

Fraction & more Fractions

Many Parts of a circle
Many Parts of a circle

I’ve been working with 9 different grade levels, nine different projects, this month, which is kind of wild, and even more wild because of all the snow days and other unexpected shifts in schedules. Most of the projects we’re doing are things I’ve written about enough on these pages, but I have managed to slide in a couple of new things with the fourth graders.

I had some extra time with some of the students some because they chose to stay after school for some extra time with me. Am still racing to finish prep for tomorrow, but want to quickly post about these two extra projects.

Dividing up a circle project
Dividing up a circle project

I brought in circles and sheets of regular shapes. Student cut up the shapes, and rotated them around a center point. The circles were marked with 12 evenly spaces dots around the circumference. We talked about other cyclic things that are divided up into 12 parts (clock, months) and talked about how 12 has so many divisors.

Rotating Shaper around a circle
Rotating Shape around a circle

I printed the shapes on heavy paper. I hadn’t done this with kids before so I didn’t know if they’d have trouble with this. It was no problem for them at all. They were excited, worked creatively, asked questions and were totally engaged.

Student rotations
Student rotations

Here’s the PDFs that I created for this project.

Circles with 12 dots

shapes to rotate in circles

I casually mentioned that ANY shape can be rotated. Well, they didn’t have to hear me say that twice before they were making new shapes.

Crazy Shape rotation
Crazy Shape rotation

The trick is to retain points that can still line up with the center and with a point on the edge of the circle.

Another Crazy Shape Rotation

During class time, I worked with students on a fractions/ bookmaking project that I’ve written about previously on my Books Are Fractions  post.

Fractions book
Fractions book

I knew some students would finish up early, so I showed them some images I had printed up some twitter posts. (If you want to see many more images like this, type in the words Fraction Museum in the twitter search bar and you will be well rewarded)

The kids were enthusiastic about creating fraction museum pieces, which I then photographed.

Fraction Museum hearts
Fraction Museum hearts

The idea is to collect items, see them as part of a whole, then write fractions that describe the collection.

Fraction Museum books
Fraction Museum books

There was some deeper thinking going on than I expected.

Mixed Fraction Museum
Mixed Fraction Museum

I’ve assembled all their images on to 2 large sheets of papers, and will present them to the kids tomorrow….but only if I stop this blogging and get back to work,

 

Addendum March 26 2018

During my fractions conversations with these kids (who, by the way, had a good grasp of fractions before I ever showed up) I talked about the confusion that can happen when trying to understand why, when the denominator is a bigger number, the unit fraction is smaller. I showed them a piece of paper folded into four sections, then said if I had to fold the same paper into eight sections (which we did) that the number of units had to be smaller to accommodate the larger number of sections. Then I asked “Imagine if we had to divide this paper into 100 sections, how small would those sections have to be? 

Hundreths
Hundreths

Well, that was it. They begged to see a page divided into 100 sections. Each time they saw me, they reminded me. Finally, today, I brought in TWO papers, and asked which one of them had fraction units that were each 1/100. Led by an particularly independent thinker, they figured it out. And figured out why, even though the divisions looked different, that they were all 1/100s.  It was a great conversation. Here’ the PDFs of you can ask kids this question yourself: hundreths

So much fun.

Art and Math · Arts in Education · Math and Book Arts

Fancy Plane Shapes

Second Graders are learning their shapes. What a great age to be composing, decomposing and recomposing.

Bird on the left, hexagon & rectangle on the right
Bird on the left, hexagon & rectangle on the right

These images are the final part of the Wallet-Book project that I began with about 66 students earlier this week. After making images that had a value of 100 we moved on to getting up-close and intimate with parallelograms and trapezoids.

 rhombus/parallelogram paper
click here for PDF of rhombus/parallelogram paper

Students got strips of these parallelograms, which I had printed on five different colored papers. We looked at the parallelograms and noticed that they were made of two triangles. After separating a triangle, we fit next to a full parallelogram, to see how the two shapes, together, could make a trapezoid.

Triangle plus parallelogram makes a trapezoid
Triangle plus parallelogram makes a trapezoid

The kids seemed delighted by this discovery. While most students illustrated this connection with three different images…

Three shapes on one
Three shapes on one

…there was one student who took an elegant approach, which was to make just one shape, then label the way it could be broken down into its parts.

Hexagon, rectangles and star
Hexagon, rectangles and star

Next we moved on to hexagons, rectangles, then, finally, a shape of their own choosing. The kids loved noticing how three parallelograms not only are the parts of a hexagon, but also, that their hexagon has the appearance of a cube drawn in perspective. The toughest shape for the students to make was the rectangle, as this meant that they had to divide a triangle in half, the rotate and reflect the pieces. Not so easy. Try it.

Designing
Designing

After making the compulsory curriculum shapes the kids went free-form, designing their own creations. My seventy minutes time slot with each class of 22 students just flew by!

Whale on the water, spouting
Whale on the water, spouting

Some students made abstractions with the shapes, others created scenes or something recognizable.

Playing with shapes
Playing with shapes

Since this was the first time I was doing this project in the classroom, and since I had three classes to work with, I kept changing how I presented the project, getting a better feel each time for better ways to get the kids to interact with the shapes within the time frame I had with them, and within the agenda that needed to be addressed. For each class, though, I kept the curriculum piece at the beginning of my time with the students, ending the class the creative part. I think I’d like to see what happens if I flip that order of working, as perhaps it will let students discover on their own things that I actively try to get them to see.

 

Pieces in pockets of Wallet-Book
Pieces in pockets of Wallet-Book

When we finished, any extra parallelograms were stored in the origami pocket we had made during out last session, looped a humongous rubber band into a hole punched into the front flap, created and ID card for the front, and added some bling, because, well, bling.

wallet-books
wallet-books

The Wallet-folders, by the way, are made from heavy weight 11″ x 17″ paper that has a four-inch fold along the bottom edge, which creates the pockets. There are two 7-inch wide pockets within, and a 3-inch fold-over flap. If you are wondering where I got this awesome paper that is tinted with black, blue, and silver, with a light cast of gold above, well, thank you for wondering. I spray painted the papers (outside, of course, with a mask on) so I could have exactly what I wanted. Yeah, a bit crazy, but that’s what I do.

Art and Math · Arts in Education · Making Books with children · Making books with elementary students · Math and Book Arts

Making Books with Money

Flower
Flower

Oh my gosh, working with second grade students is so rich.

They have skills, they are enthusiastic and uninhibited, and tapping into their learning curve is delightful.

Windshield, with George in the driver's seat
Windshield, with George in the driver’s seat

I’m working with three sections with about 22 students per class, so I’m getting to see about 66 different ways that students are making sense of the 100 cents project that I described in my last post. (oh, there’s an unintended pun in that last sentence…)

Abstract design
Abstract design

Short recap: students were given images of coins, which add up to $3.00, from which they chose $1.00, or 100 cents, worth of coins to create a design.

These students hadn’t started studying money yet, which was fine. Most students seemed to understand how much coins were worth, though certainly a few students had no idea about the value of coins.

It was fun, when adding up the value of nickels, to say, Now you know why it comes in handy to count by fives.

Person
Person

Making the wallet-book to house the 100 cent images, then making the images was what we got done on the first day. Separating out 100 cents was certainly the most challenging part of the project. The designs flowed freely.

Bug
Bug

Day 2 was a bit more challenging, but I think that the toughest part was just communicating to them what I was looking for, which was for the students to make matching arrays of the coins that they used in their designs, then providing the equation which showed that the value of the coins equal 100.

Aiirplane
airplane

Turns out that this array-making uncovered a few mistakes. For instance the airplane pictures above was five cents short, so he added a nickel on to the bottom and all was well.

Person in landscape
Person in landscape

There was a wide range of simplicity to complication of images.

Flower
Flower

If students didn’t have enough coins of a certain value left from their original 300 cent to making the matching array, they would exchange change with another student, at least that was the plan, which worked fairly well. I did bring lots of extra coins, for moments when it seemed better just to hand students what they needed.

Still, everyone should have had 100 cents left over. These coins got glued on to a pocket of their wallet book, along with a statement of the value of these coins.  That little black folder that contains the 100 cent image now has an enlarged section of a colorful buck glued on to the front. After all that figuring and adding, it was great to end yesterday’s class with some playful coloring in.

Okay, one more day with these students. The next piece that goes into the wallet-book has to do with combining shapes to make other shapes, much in the same way that we combined values of coins to make other values.

The most joyful moments during these days is having this opportunity to be a part of these early moments of learning about addition. When students say that they can’t get their numbers to add up to 100, though they know that they do, I can sit with them and help them sort out what’s going on. It’s so illuminating for me hear them tell me what they’ve done, and then to help them see another way of interacting with the numbers.

Addendum: as soon as this post went up the generous and brilliant connector-of-all -things-math offered me this link to some other coin projects http://mathhombre.blogspot.com/2009/08/money-games.html

Simply awesome.

Addendum #2: here’s the link to the final post of this project https://bookzoompa.wordpress.com/2017/04/30/fancy-plane-shapes/

 

Art and Math · geometry and paperfolding · Math and Book Arts

Inside Outside Code Book for Miriam’s Collection

Book, peeking out of its box by Paula Beardell Krieg
Book, peeking out of its box

When Miriam Schaer was assembling her teaching collection to send to Telavi University in the Republic of Georgia, I very much wanted to contribute, but nothing I had on hand seemed right. In the nick of time, some thoughts came colliding together. Polygon Fractal book by Paula Beardell Krieg

This structure started out with an exploration of a shape which I wrote about a few weeks ago after watching family math video made by the Lawlers.

Inside Outside Book by Paula Beardell KriegThe book  opens in an accordion-like fashion, but front and back are structurally different.

Polygon Fractal book by Paula Beardell KriegThe colorful pages rotate open to create these double layered corners. The polygon fractals on the pages here are harvested from Dan Anderson’s openprocessing page then toyed with in Photoshop.

To see the fractals in their full radiant radial symmetry one must rotate the book. There are six completely different images to be seen. But it gets more interesting, because there is a whole other side to see.

The folds of those double layered corners completely reverse to form a cube!

You can’t imagine how excited I was when I saw this cube emerge from the folds!

This folded structure totally suggested that, whatever I use on it, that it be about the dual nature of….something….a suitcase (no, too obvious), a politician’s statements (ugh, too boring)…actually wanted to use images that didn’t imply any hierarchy, hiding, agendas, or judgement about contrasting inner and outer manifestations.

It was this thinking, about duality but equality of visuals, which led me to using Dan’s code along with the polygon fractals that it creates. So perfect. Code and images are perfectly linked, simply completely different ways of seeing the same thing. You know, like Blonde Brunette Redhead 

Now, I do have a lingering unresolved issue with this book. I’m not thrilled with the paper that I’ve used. It’s 32lb Finch Fine Color Copy paper. It takes color beautifully, folds well, but I’m thinking that the folds might be more prone to tearing than is comfortable. Not sure what else to use…am open for suggestions. Miriam’s copy has been shipped, but I’m still happy to check out different papers to use.

I can’t help but wonder if people will be able to figure the transformation of these  pages without seeing this post or reading the brief explanation I’ve provided on the back page of the book? Dunno.

Oh, and here’s my favorite variation:

Hanging a tea light from a pencil so I can see the inside and outside at the same time.

Happy.