Yellow Band: Coin, Weeks 1&2

Welcome back everyone! We’ve had a wonderful first few weeks in the Beehive. It’s been so much fun to see all of our returning Red Banders (now in Yellow!) and welcome our newest members of the Brightworks family into the Red Band.

Calvin, Abir, Sylvester and Kit stay cool by playing in the water table in the courtyard of the Beehive.

I know this is going to sound out of character, but things have been moving super s-l-o-w. Nathan, Nicole and I have carefully and intentionally introduced routines, norms and materials in order to teach these kiddos simply how to be here at school with us. Things that I might otherwise squeeze into the first two weeks, we’ve spread way out. This way, we have plenty of time to practice each skill as we add them and revisit materials frequently before moving on.

Pattern blocks are one of our favorite materials! We’ve been exploring some of the many possibilities of these blocks in our morning centers. Here Sylvester shows the vertical structure he tried to build using the blocks.

And Abir wrote his name with cuisenaire rods! I love how he replaced a few blocks with equivalents made up of a few blocks. That skill will come in handy later!

May is painting! We’re hoping to have a whole lot more painting this year!

At the beginning of this week, we started to get out some of our favorite board games. Here, Khalilah and Calvin face off in chess. Great job you two!

We’re also just getting to know each other! Dash and Isis take some calls at lunch.

Over the summer, Nathan and Nicole attended a workshop on the Responsive Classroom model for social and emotional learning in elementary classrooms. I used this model in my previous school. so it’s been great to work alongside them to make our classroom more cohesive in our approach to the flow of our day, how we introduce new materials, and how we handle misbehavior. We start our days with morning meeting, then move to centers. After park and lunch, each band usually reads a book together at quiet time. Then, our afternoons are choice time. Instead of moving through timed centers, Red and Yellow banders can go deeper into an activity they explored in the morning.

We also tried coin rubbing. Sylvester shows a coin that came out particularly well.

We also introduced a coin counting and trading game that we’re calling ‘Funny Money.’ Roll the dice, and collect the number of pennies indicated. Trade for more valuable coins if you want! Try to make it to a dollar! Here, Dash checks the dice, and records his roll.

Oh! And we went on our first field trip! Since it’s the Coin arc and Daiso is only 3 blocks away, I decided I should let these lucky kiddos choose their own school supplies. I went in advance to scout out the options and prices, and decided on a budget of $6 for each kiddo to choose: 1 journal with lines, 1 journal with blank pages or grid, one pencil bag, and a pencil sharpener (if you can find it). This trip was such a blast! I would definitely do this again, why not?

Ronin searches for the perfect pencil bag.

We found the cat stuff!

May hunts for the perfect last thing.

Abir the bargain hunter was able to get a pencil sharpener and a set of push pencils in addition to his notebooks and pencil bag!

The next morning, we used pattern blocks to help us add up the prices of our items (and see if we all were able to stay within our budget!).

Finally, we finished up this week with a dance party, because why not?!

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Yellow Band: by Sea, weeks 11 & 12

The last few weeks have been so much fun! As the crow’s nest and tugboat started to wrap up, we didn’t quite have enough time to start some new projects from scratch. But, we started an exploration that we hadn’t gotten to yet–lighthouses and shipwrecks. Because why not?

As long as people have been traveling and transporting, boats have been wrecking along rocky shorelines and invisible reefs and in bad weather with low visibility. And, as long as boats have been wrecking, people have been trying to figure out different ways to protect sailors and mariners from unseen dangers. With lighthouses, bells, foghorns, and even fires burning from beaches humans have tried to light the way toward safety. And, the Bay area is a great place to explore some of these physical structures and research their successes and failures.

At Pt. Bonita light in the Marin Headlands. Most recommend!

At Lands End, where we could see the wreck of the Frank Buck, Lyman Stewart and Mile Rock, where the SS City of Rio de Janeiro all wrecked.

One piece of this exploration was light itself: how does it work, and how can we magnify it to light the way on dark nights? We spent some time playing with lenses and color in order to explore some of the properties of light.

We tried to separate black ink into it’s component colors, but it turned out our black markers were actually very dark blue.

Then, we made spinners with each color of the rainbow. We observed that if we could spin them fast enough, the colors would blend together to look white, like light!

And of course we took a few lenses outside to experiment with focusing light.

Another piece of this exploration was architectural: how can we build a tall tower that is also strong enough to stand up to pounding waves, unrelenting wind and rain?

Oscar thought he’d simulate a tall cliff by the ocean by building his lighthouse tower on a stool. This also gave us a great way to test and see how strong his structure was!

Sakira quickly realized that she’d need to add layers of blocks to her structure in order to make it stand up to the wind (aka her hand).

Solin carefully drew the tower that she and Reyahn built together in her journal.

Oscar then enlisted Emilio and Devlin to help him reinforce his initial simple designs with layers and layers of blocks. They also decided to keep their tower short, because it was already on top of a tall rock.

After our trip to Pt. Bonita, we realized the sheer magnitude of the number of shipwrecks around the Golden Gate (around 300!). Some quick internet research revealed that we could get pretty close to a few of these wrecks by taking a trip out to Lands End. So that’s just what we did!

We got there right on time for low tide! In this photo, you can see all that remains of the Frank Buck–its steam engines–poking out of the water.

We hurried down to Mile Rock Beach, to get as close to a few wrecks as we could.

Countless ships have met their fate along these rocks, and the stretch from Seal Rock to Fort Point has been especially deadly.

And we climbed around a lot too! We couldn’t have asked for better weather!

Oh, and we stopped by for a quick walk through the labyrinth before heading back to the bus.

This week, we focused on researching and experimenting with a particularly damaging type of shipwrecks: when oil tankers wreck and leak crude oil into marine environments. We started to learn a bit about the wreck of the Exxon Valdez in 1989, which left a lasting impression for many. The entire school has been talking about how to be more responsible with our waste–from being mindful that we put our trash into the proper bin, to ways we can minimize waste–so this turn in the exploration fit right in. Plus, some of the chemistry experiments we got to do were really messy and fun!

Devlin and Reyahn work on making a boom to contain some ‘crude oil’ in their tin tray.

Oh no! The oil was able to sneak across Emilio’s boom!

Cleaning up oil spills is hard! Emilio tried to make a boom float on the water, but although the cardboard could soak up oil, it didn’t keep the oil from sneaking across to the ‘clean’ water.

And now we’re already getting ready for Expo! Stay tuned!

Yellow Band: by Sea, Weeks 9 & 10

This week, let’s check out some of the work we’ve been doing on our projects! Two of our bigger, group projects this arc have been a tugboat and a crow’s nest. Because BOATS.

Reyahn, Quinn and Calvin all work hard on mounting the top of the level of the bow.

Nicole and a group of Red and Yellow Banders get ready to cut their big circular deck for the crow’s nest.

Nathan started this arc with a big interest in tugboats because of the way that they are ‘helper boats’ in a harbor. These busy little boats are the experts of a port or harbor, tugging bigger boats in and out, and directing traffic through sometimes busy waterways. Which obviously goes perfectly with one of our favorite sayings over here in the Hive, “How can I help?”

Nolan drives in some screws to attach the bow to the hull of the tugboat.

Working sometimes meant squeezing into some tight places! Here, Reyahn helps attach the bow to the hull.

One morning, Emilio and Quinn headed over to the Orchard to cut a trapezoidal piece of plywood for the deck of the bow.

It was really important to the Red and Yellow Banders that they be able to go into their tugboat, and that it looked like it was above the water, like in real life. This meant that they would need to build a super strong frame to support a floor for a few people to stand on at once. And that meant they would need to use lots and lots of flat brackets. And they really really did it! Even though about 2 weeks of work consisted of just installing these brackets, they really stuck with it.

Khalilah cuts open a big cardboard box to use as the skin of the tugboat.

And now it looks like a boat!

The folks in the Red Band have spent some time learning about the international flag signal code, so Nicole was interested in building a mast of a boat to hang a flag from. And if we’re building a mast, we should probably just build the platform to stand on so that we can spot storms, other ships and even land from far away. Ya know, a crow’s nest! As we worked out our design, we knew we would need to use something in our space as an anchor, otherwise the crow’s nest would need too big of a footprint in order to be stable. One day, paging through the David Macaulay book Underground, I realized that one of the big columns in our space would be perfect. They go down into the basement, making them just like the mast on a ship! This, plus a few tips from Gever (compress anchor beams to the column using ratchet straps, just like when building a treehouse!), and we were ready to turn our ideas into reality.

May and Ronin work together on assembling the wooden beams that we’ll anchor to the column in our space.

After doing some initial work on the wooden beams, we were ready to hold them up and compress them into place!

Then, we got to work on a rope ladder so that we can get up into the crow’s nest. Here, Oscar cuts a branch into 14″ sections to use as the rungs of the ladder.

After struggling with a few other knots, Sylvester decided we should try the constrictor hitch to tie together the rungs of the rope ladder. And he was right! This knot works great with the tree branch we found to use for the rungs.

These two projects are so close to being done we can almost taste it! Kiddos are already asking if the crow’s nest can be a permanent part of our landscape, and I think it may be so well built that maybe we can say yes!

Yellow Band: By Sea, Weeks 6-8

A few weeks ago, we started to talk about international shipping, the switch to containerized shipping, and the globalization of the textile industry. Yea, you read that right. All this with these 1st and 2nd graders.

Working on a map to visually display the data we collected on where everyone at Brightworks’ t-shirts came from. Read about it below!

The thing that started it all was this podcast, which focuses on the port of Oakland. It tells the story from the beginning, hearing from longshoremen and tugboat drivers, and follows the story all the way through to today, even taking the listener inside a container crane. Because, you see, shipping goods around the world used to be enormously hard, labor intensive work. Ports employed lots of people, because lots of human power was needed to load and unload cargo from the belly of ships. And so, a lot more stuff was made closer to home. Things were trucked across the country. Then, a company called Sealand used the first container. Suddenly, stuff could be loaded in boxes, and those boxes could be put on ships. Instead of each sack of coffee or pallet of cloth being painstakingly loaded, containers could quickly and relatively easily be stacked on ships. Now, all it takes is one operator in a container crane. And so, since shipping is so cheap–so cheap in fact, that the international shipping industry loses money hand over fist–we started getting more and more products made overseas, where labor is cheaper. On that first day, after listening to the first episode of Containers, we took a minute to look at the tags of our t-shirts to see where they all came from. India, Indonesia, China, Guatemala, Vietnam. And off we went.

Devlin checking to see where his shirt was made. That tag can tell quite the story!

The following week, we started to look at some data about the Port of Oakland, getting ready to go on a field trip to see it all in person. We work on making graphs and charts about where the goods received at the port typically come from, and what kinds of goods are packed inside all of those containers. Then, we spent a day at Middle Harbor Shoreline Park in Oakland, right smack in the middle of the port, taking a closer look at the container cranes, and watching in awe the amount of truck traffic going in and out, in and out, constantly. So many trucks! So many containers!

We saw tugboats hurrying around the bay.

And so many trucks dropping off cargo, picking up cargo.

And one HUGE ship parked at the port, though we couldn’t tell if it was getting loaded or unloaded.

Then on Friday, it was our turn to lead morning circle. So, we posed a question to the whole school: where did the shirt you’re wearing come from? And the data we collected was really compelling. The following Monday, we got to work graphing our data, making bar graphs and line plots. As we worked, we noticed that close to half of our shirts came from Asia, with Latin America a distant second. We also noticed that none of our shirts came from Europe or Russia or Australia.

Solin working on her line plot of our t-shirt data.

She used t-shirts on her line plot–perfect!

Nolan’s line plot/chart came out very precise and easy to read, great job!

Then, we put our data on the map, using different sized bubbles to show the number of shirts that came from each country.

There was so much great geography woven through this exploration too!

We knew that a lot of the reason that so many shirts came from Asia, which seems very far away, is that container shipping is cheap, and so is labor, but our understanding was missing the human story. So, I went to Newsela, searching for articles about the textile industry. These articles really filled in the story of our t-shirts. First of all, chances are the cotton your t-shirt is made of was grown in the US. You won’t find that on the tag! On top of that, kids might have had a hand in making our clothes! And, women in Bangladesh actively choose to work in the textile industry, because even though it can be dangerous, it gives them freedom to earn their own money and make their own decisions.

Solin read about a change to labor laws that could lead to more children leaving school to work in the garment industry. Advocates worry about children being taken advantage, but sometimes poor families need the money that their children can earn.

That last point really stuck out to us. In our discussions of what we think about the textile industry, most Yellow Banders had a value for affordable clothes, and no discrimination for someone making the shirt here or far away. If the shipping is cheap, why not? People in other countries need good jobs, so why not make clothes? And, people need access to clothes they can afford! Reading these articles (and later listening to the Planet Money episode about two Bangladeshi sisters that work in a garment factory) gave our discussion a lot more depth and empathy. Now we could see that we could both be in favor of affordable clothes, and think that the humans that work to make our clothes deserve to earn a living wage and work in a safe environment.

Sakira and Emilio read about women in Bangladesh that work in textile factories. The women often work in hot, dangerous, grueling conditions–one woman said she tries to make 1,000 shirts everyday! But, leaving their small villages and earning their own money gives them freedom and independence. And, the money they send home significantly improves their families’ lives.

Then, I saw online that this past Monday would be the 4 year anniversary of the Rana Plaza Factory collapse in Dhaka, Bangladesh. So, I decided we should make our own t-shirts.

At the fabric store choosing fabrics!

Then, cutting out pattern pieces printed out from a free online pattern, and piecing them together like a puzzle.

In the afternoons for Beehive Choice time, we’ve been using a raglan t-shirt pattern to make shirts. Here, Dash helps Sylvester pin on his sleeves.

And Piper from the Teal Band has been coming over to help us–which has been awesome!

The Yellow Band worked on making some custom t-shirt patterns. Here, Reyahn traces Sakira to help her draw her custom pattern.

Nolan works on his custom pattern. Figuring the shape the pattern pieces need to be is pretty tricky!

And, Oscar helps Nolan cut out the fabric using his paper pattern as a guide.

And that’s the story of why we’re making clothes during the by Sea arc. In case you were wondering.

Yellow Band: by Sea, Week 5

Welcome back everyone! A short post this afternoon, just thinking about the great math work we did this week, and thought I’d share a bit.

A few weeks ago, while we were working on the constellation project, we started studying the Babylonian/Sumerian number and counting system. The ancient Babylonians did not use base 10–the system that we use, and is also the foundation of the metric measurement system. Rather, they counted in base 60. But, hit the brakes. We didn’t start there. We started by looking closely at how we use our hands to count. And we started to have some really neat discoveries!

Emilio records in his journal how he would count up to a few different numbers, some big, some small.

When we got everyone’s hands drawn on the board, we noticed some really neat things. Some people started counting on their thumbs, some on their pointers. Some held their hands palm up, others palm down. And, to count to big numbers, like 47, some people counted up by 5 and others by 10.

From there, we learned how the Babylonians counted on their hands. They did a neat thing: they used their right and left hands differently. On their right hand, they used their thumb as a pointer, and counted out each joint on each finger. This allowed them to count up to 12 on one hand. On their left hand, they kept track of the dozens that they counted on their right. In this way, they could count up to 60 on just their two hands. These first few explorations really focused on our hands, our most concrete way to count, most literal connection to the abstract concept of number.

Samira shows how she is practicing counting on her hands like a Babylonian!

Sakira helps Emilio record in his journal how to count up to a few different numbers like a Babylonian.

Then, we started to talk about base 10 and base 60. We watched a couple of videos about mathematical archaeology, which pointed out to us a few fundamentals of our number system, and contrasted them to the Babylonian base 60 system. Both systems work from left to right, and as we move up an order of magnitude, we add a numeral to the left. In our system, we use a 0-9 pattern, and when we get to 9 in a place, we add one to the place value to the left in order move from 9 to 0. Each place value represents the numeral in that place multiplied by a power of 10. For example, for first place is 10^0, or 1. So, a numeral in the ‘ones place’ is equal to that numeral x 10^0. When you want to move from 9 up to the next order of magnitude, you add one to the ‘tens place,’ or 1 x 10^1 = 10, and the 9 in the ones place turns back to a 0. Well, the Babylonians basically did the same thing, except replace all the 10s with 60s. Or, as Emilio so helpfully put it for us, in base 10 your ‘silent alarm’ goes off at 10, but if you’re Babylonian, your ‘silent alarm’ goes off at 60.

All of this with 7 and 8 year olds! And they really stepped up to the plate! We learned the symbols the Babylonians used (really just 2 different symbols), then started working each morning to practice writing numbers in base 60, which got really interesting when we wanted to write big numbers.

Reyahn works on adding symbols to our ‘glossary’ of Babylonian numbers, to help folks work on translating some different numbers.

Reyahn shows how to carefully organize your symbols. The Babylonians didn’t string out their symbols, the never wrote more than three in a row. Instead, they started to stack the symbols.

Solin shares her strategy for writing a particular number in Babylonian. Solin organizes herself into the first two place values in base 60:  x 60     x 1 . This helped her see that, though she wrote the same symbol twice, one is worth 60, and other 1, so the whole number she wrote is 61.

Sakira shows how she figured out how to write 104 in Babylonian. All these numbers with only 2 symbols! You can see in this picture how Solin organizes herself into the first two place values in base 60:  x 60     x 1 . This helped her see that, though she wrote the same symbol twice, one is worth 60, and other 1, so the whole number she wrote is 61.

Once we were comfortable with the system and the symbols, we could really hit the gas. We worked mostly in just the first to places, which you can see in the picture above–which will take you all the way up to 3,599! This exploration has been so rich with number sense and operations–addition, multiplication and division–and our understanding of our own base 10 system has really gelled. By taking this step outside of our comfort zone, and essentially learning a different counting language, we noticed some really important things about our own number system that will inform the way we work with numbers forever. Woah!

Yellow Band: By Sea, Weeks 3 & 4

All hands on deck!

The constellation team rotating the nightbox onto its side so that we can attach the top.

We’ve got a few fantastic field trips under our belts, and we’re starting to get our sea legs. Last Friday evening, the Yellow Band took an after hours field trip up to Chabot Space and Science Center in Oakland for their weekly stargazing. Every Friday and Saturday night, weather permitting, the museum opens up their telescopes for folks to come take a look for free. AND, apparently they also host a telescope making workshop on Friday nights! So, not only did we get to look through their historic telescopes, we got to hangout with some super nice people who are working on making telescopes of their own!

On the right is Katie. She’s been working on grinding her mirror for 15 weeks, and she thinks she has 15 more weeks to go–wow, talk about perseverance!!!

Last week, she was using 220 grit to smooth out the surface of her mirror. As her mirror gets smoother and smoother, she’ll use finer and finer grit.

She even let us try our hands at grinding the mirror. Thank you so much Katie!

Now, all of this was because of building the constellation, which itself is because of studying a bit about celestial navigation. So, last week and this week we worked both on writing numbers like Babylonians and using a simple sextant, called a mariner’s quadrant to both locate our latitude and determine height of a few very tall things around our bandspace.

Working in other bases (besides base 10 that is) really forces you to think about how our number system works. During our work in base 60, Emilio taught us all a great trick: when working in base 10, a ‘silent alarm’ goes off in your head when you get to 10 that tells you to write a zero in the ones place, and add one to the number in the tens place. So, when doing math like Babylonians, we started sounding the alarm at 60!

Of course, the purpose of all of this was to ground our understanding of degrees. So, then we started to do some application, making mariner’s quadrants and beginning to tinker with the readings the quadrants gave us at different distances from an object.

So, when the sun came out on Thursday we were able to go outside and approximate our latitude! *It was almost noon, just a few days after the equinox, and also we were using very rudimentary sextants, so our measurements were in the ballpark.

Meanwhile, the Red Band has been trying to make little submarines–aka crafts with neutral buoyancy, that won’t sink or float, but rather hangout just under the surface. So, on Tuesday we went to the USS Pampanito! And the Aquarium of the Bay after of course! Our day was full of:

Awesome doorways.

Lots of tiny beds.
*Ask Sylvester about the Captain’s Quarters.


Smashed pennies.

Rough things to touch.

Slimy things to touch.


And SOSO much…

to look at!

Have a great break everybody!

Yellow Band: By Sea, First Weeks

The students of the Beehive are ready to hit the high seas!

We dove right into several different explorations around the idea of transportation by Sea, I’ll run through a handful of them. We got started studying the stars, both building a constellation as an afternoon project, and studying how sailors navigated when out on the open seas. We’ve been doing a lot of experiments around buoyancy–weight, density and water displacement–in order to build small crafts that float, and maybe even carry heavy and dense cargo like rolls of coins. We has an awesome all-school field day, focusing on building a kind and inclusive community here at school! Oh, and we started reading Hemingway! Really!

First off, the constellation project and related celestial navigation explorations. What the heck does it even mean to build a constellation anyway?! I don’t know, that’s why I posed it as a project! One thing we often talk about when selecting projects for both the Tinkering School and Brightworks is that a good project is like a keyhole: it may seem narrow in focus at first, but upon further examination opens up to a world of possibilities and expressions. The constellation is just that! It immediately conjures an image and connection to the real world. There are loads of stories to tell around the stars–just ask the Greeks! Plus, none of us have ever built a constellation before, so there will be loads of neat problems to solve and science to learn along the way.

Right off the bat, the constellation group decided that we wanted our constellation to be rooted in real science: show the magnitude of the different stars, convey their different distances from earth, and demonstrate the connection to celestial navigation. We started with reading some from H.A Rey’s book, The Constellations, which combines facts about stars with star maps and the Greek myths that go along with many well known constellations. When we got to the part about light years and the stars different distances from earth, we did some perspective drawing, showing a chair from two different angles. This helped us wrap our heads around the idea that constellations that are very familiar to us, like the Big Dipper, would look totally different if we stood on a different planet.

These astronomers are drawing this chair from two different perspectives. Afterward, we analyzed our drawings, pointing out the features we emphasized in from our first perspective and our second.

Here is Nolan working hard on his second drawing of the chair!

After doing some research, and nailing down our priorities in what we’d like to get across by building a constellation, we were ready to get to work! We decided that we needed a ‘Night Box,’ for the stars to live inside, and that we wanted to build both the Little and Big Dippers, because one includes Polaris–the North Star–and the other points to the North Star. So, If you can find one of those two constellations, than you can figure out where you are! Then, we decided that we wanted the whole thing to be about as tall as the clock on the wall (which turned out to be 7′). Then we got down to the nitty gritty!

Sylvester explains to May and Dash why the chops stop means that we don’t need to have a line drawn on our wood in order to cut.

A regular fixture during morning choice time has been some type of exploration around buoyancy: what types of things float and why? After exploring some different materials like wood, metal and plastic, and defining what we meant by ‘float’ anyway (if you push it down into the water, it doesn’t come back up), then we got started trying to build some type of craft that would carry a roll of nickels.

Wood floats really well! But metal maybe doesn’t, and the empty plastic water bottle floated, but the one filled with water didn’t. Hm.

Balloons became popular flotation devices because we noticed that air really really floats. But, they didn’t end up working that well to build boats because they were really hard to stabilize–the nickels always flopped over to the bottom and sunk!

Nicole had been doing some origami at choice time, so Reyahn decided to try out his paper boat to see how many nickels it would hold. Not quite a whole roll, but it did hold 25 which was the most a craft held that day!

Then we had field day! During our in-service week, we talked a lot about school culture, and wanting to take a moment to emphasize kindness and caring for each other. An all school community Friday field day seemed like a great chance to have some band-specific communication and teamwork focused activities, but also mix up all the bands to emphasize how much we care about each other. Thank you so much to Jay, Nathan, Justine and Evan for organizing and facilitating! And thank you to the Magenta for offering some great activities too!


Ally shows Phoebe and Sakira how to twist up their t-shirts to get them ready to tie-dye.

May and Sakira inside the parachute.

Nathan led the Yellow Band in a communication focused activity similar to river crossing. In this activity, the group has to figure out the order that they can step on the different squares, Nathan knows the sequence, and only tells them ‘Yes,’ or ‘No!’ One person tries at a time, but as the group figures out the path, they can help each other! And, they’ve got to remember those kind ways to offer help and advice!

And then back to work! Another of our choices these first few weeks has been to read and visualize Hemingway’s classic short novel The Old Man and the Sea. This is one of my favorite books, I’ve read it many times, so it was a clear choice for a novel for us to get into because, you know, don’t dumb it down. That being said, sometimes I have to artfully rephrase things a s I’m reading. But anyway, it’s been great! It’s an excellent story of companionship and perseverance, there is a lot for us to unpack as we read. We’ve had excellent conversations about the difference in the relationship between the young boy and the old man, and the young boy and his father, carefully analyzing the descriptions as we go by making drawings to show what we’re hearing. On a given day, we probably only read 2 or 3 pages because there is so much rich detail to sift through.

Khalilah’s illustration of the old man’s bed and his dreams: his bed with newspapers for sheets and rolled up trousers for a pillow, and his dreams full of lions.

And, of course, we’ve kept up with our morning vitamins because MATH. So far, I’m loving the math of the sea–there is so much interesting stuff to do! Our first exploration is connected to our work on the constellation, the idea of celestial navigation. Did you know that much of our calendar, number system, and organization of time is based on an ancient system that wasn’t even in base 10?! True story! The basis for 60 minutes in an hour, 60 seconds in a minute. and 360 degrees in a circle is the Babylonian base 60 number system! So, we’ve been learning how to count like a Babylonian on our hands, and how to record numbers like the ancient Sumerians would too! It’s kinda tricky, but a great way to stretch our brains, thinking flexibly about numbers.

But first, we had to really nail down how we use our hands to count to begin with. And we went into a lot of detail, in order to emphasize metacognition and reflection. Some kiddos start on their thumbs and work out, others start with their pointers and end on their thumbs. And, we all different ways to count up to bigger numbers–some counted by 5s or 10s, some used one hand for 1s, and the other for bigger quantities. Interesting!

And then we started to practice counting like a Babylonian! They used their hands in a really interesting way, counting each joint on their fingers and using their thumb as a pointer. That way they could count up to 12 (aka one dozen!) on one hand, and keep track of dozens on their other hand.

Armed with an understanding of where the degrees on the compass came from, we went up to the field to start doing some of the basics of navigating. Because, if you’re trying to figure out where you are and where you’re going, you’re going to need to know how to use this tool!

Using compasses up at the field!

Oscar and Sakira used a pencil as a pointer, which Emilio then followed with his eyes to check their degree readings for accuracy. We measured from the center of the field the location of the Bay Bridge, Bernal Hill, Sutra Tower–just to name a few!

Nolan and Reyahn kept their compass on the ground and measured from there. I asked the kiddos to first take two measurements on the same thing–one of the goals on the field–first from the south fence, and then from the center of the field. We’ll use these measurements to talk about the relationship between the angle and the distance next week, but I have to figure that out a bit more first!

More more more to come!