teaching aid

Finally finished my plant anatomy series. These three art make a great gift for any botanist or gardening enthusiast. check out the deal for all three at my shop:


ancient greek masterpost!

I’ve been collecting resources to aid in teaching yourself ancient greek for about a year now, and here they all are!

Where to Start:


Grammar, Guides and Practice:


*Updated as of Jan. 9, 2016

James Potter being the first of the Marauders to realize that Remus is still their friend, as Sirius would be conflicted over his parents’ beliefs and Peter would be conflicted over fear.

James Potter sneaking down to the library at night beneath his invisibility cloak to do research on lycanthropy.

James Potter trying to act nonchalant but secretly fussing and worrying during the week leading up to the full moon.

James Potter convincing Madam Pomfrey to teach him first-aid so that he’ll always be prepared to help Remus after the full moon.

James Potter staying up on the night of the full moon (in the years before he was an Animagus) sitting on the marble staircase in the Entrance Hall so that he can be nearby in case something goes wrong.

James Potter being caught by Filch but surprisingly not getting in trouble when he is taken to Professor McGonagall’s office and instead being told that she will make an extreme exception and allow him to remain in the Entrance Hall, so long as he doesn’t go outside.

James Potter falling asleep in class the next morning but not being reprimanded by any of the professors.

James Potter making up wild stories when asked why Remus looks so fragile/injured. These stories range from Remus fighting off the giant squid to fighting off Voldemort himself.

James Potter hexing anyone who laughs at Remus’ scars.

James Potter keeping an extra stash of potions/herbs/medicines in his bag in case Remus ever needs them.

James Potter using the term ‘furry little problem’ in public.

James Potter yelling at Remus for two hours the first time Remus refuses to ask a girl out because he doesn’t want to hurt her.

James Potter secretly donating a large amount of money to charities that help werewolves.

James Potter spending hours learning how to become an Animagus, risking his health and a life in Azkaban in the process.

James Potter assuring Remus that being a Marauder is definitely more interesting than being a werewolf and honestly he doesn’t know why Remus gets so dramatic all the time.

James Potter willing to make an Unforgivable Vow to never tell anyone about Remus’ lycanthropy without his permission and though the vow never occurs, the mere suggestion of it shows Remus how far James is willing to go to keep the secret.

James Potter doing all of the above in secret while also spending a majority of his time getting the top marks in the class, running around with the other Marauders and causing mayhem and mischief, playing Quidditch, worrying about growing up in a world where war is right outside the Hogwarts’ boundaries, forming a crush on Lily, having a few other crushes and heartbreaks along the way, and going through the turmoils that any other teenager goes through.

But most of all…James Potter being a three-dimensional character who certainly has flaws but also has great moments, like when he supports someone who is like a brother to him, thus proving that he’s not a one-dimensional jerk.

"You Just Sunk My Copernicium!" Playing Periodic Table Battleship
Teach your kids about the wonders of the periodic table with this easy and fun version of Battleship

Many of you will likely remember playing the tabletop game Battleship as a kid.  Karyn Tripp, who runs the homeschooling education site, Teach Beside Me, used the basic format of the classic game to create a teaching aid for the Periodic Table of Elements.  Here’s Karyn explaining how to make the game and how to play it:

How to Make a Periodic Table Battleship Game

To make the game, print out 4 copies of the Periodic Table.  I like the colored ones, but it isn’t necessary.  I found a great one from Science Notes.  Then, along the left side of the table, I labeled the rows alphabetically.  They already have row numbers.  I laminated mine to make it re-usable.  We used two file folders and hooked them together at the top with a jumbo paperclip.  Attach two of the periodic tables in with that paper clip as well.  Then lay the other two periodic tables down on the table in the folder.

How to Play Periodic Table Battleship

The kids can then mark where they want to place their ships by circling rows of 2, 3, 4, and 5 elements on the lower table.  They play by calling out coordinates.  If they miss, they put an X on the spot they chose on the upper table.  If they get a hit, they circle it.  They can continue playing until one person sinks all of another person’s ships.

Karyn has gotten an enthusiastic response to her idea, but commenters who are chemistry teachers have taken exception to the alphabetical lettering of the rows and have made suggestions such as the following:

I am a chemistry teacher.  Neat Idea, but please don’t use letters on the side.  The Periodic Table is numbered on the rows, too.  Just put those numbers (1,2,3,4, etc) if they are not there, remembering that the bottom two rows are actually embedded in rows 5 and 6 where the arrows pull them down to spread them out.  The numbers at the top should be 1A, 2A, 1B, 3B, etc.  To get your students to learn the periodic table, don’t just sink ships, eliminate groups.  Have students select one element in each group (they are labelled by color on the PT itself).  Students can call them by element symbol to start but they can also use location “2-1A” or atomic number or mass number.  If you get a more sophisticated PT, it will have the melting point and a lot of other properties as well.

You can see Karyn’s original post here, and if you’re a homeschooling parent, be sure to check out some of her other teaching materials and aids.


First t-shit up on etsy! Very excited to start selling all my science apparel in my store. All printed on American apparel Jersey. Stay tuned and check it out at www.etsy.com/shop/Rachelignotofsky

A Beauchene or exploded skull is produced as an anatomical study and used primarily as a teaching aid. They are difficult and costly to produce. These skulls were named for their mid-1800’s creator Claude Beauchene. 


Interaction of Color: 50th Anniversary Edition.

osef Albers’s Interaction of Color is a masterwork in art education. Conceived as a handbook and teaching aid for artists, instructors, and students, this influential book presents Albers’s singular explanation of complex color theory principles.

Originally published by Yale University Press in 1963 as a limited silkscreen edition with 150 color plates, Interaction of Color first appeared in paperback in 1971, featuring ten color studies chosen by Albers, and has remained in print ever since. With over a quarter of a million copies sold in its various editions since 1963, Interaction of Color  remains an essential resource on color, as pioneering today as when Albers first created it.

Fifty years after Interaction’s initial publication, this new edition presents a significantly expanded selection of close to sixty color studies alongside Albers’s original text, demonstrating such principles as color relativity, intensity, and temperature; vibrating and vanishing boundaries; and the illusion of transparency and reversed grounds. A celebration of the longevity and unique authority of Albers’s contribution, this landmark edition will find new audiences in studios and classrooms around the world.

See the book here: http://amzn.to/1guALLa (there’s an beautiful app too): http://bit.ly/1nWoeWR


Remember this lovely cat skull I cleaned this summer? She’s spent some time in my personal collection and now it’s time to sell! It’s very tempting to keep her, but I’m in a hell of a financial pinch and something tells me there’s an ideal home for her out there on the interwebs. Don’t miss this chance to take home a beautiful specimen of domestic cat, totally cruelty-free!

$60 + $5 S&H - continental US only!

Anatomy of a Cactus illustration. Cacti are the only plant that I don’t straight up murder by accident. So I had two great models in my apartment.

If you want to pick up an art print of your own you can here at my shop:



“Thousands of our men who are convalescing and very many who feel the strain of these trying days, are being advised by their doctors that knitting is the perfect tonic for steadying the nerves. The womanfolk are only too anxious to help, but there are a great many men, especially in our hospitals, who miss the guiding, feminine hand.

In taking the lead, Penelope teaches you with the aid of clear illustrations, the more simple knitting stitches from which are created such useful articles as scarves, blankets and cushion covers.

Before commencing any knitting always be sure to have the correct materials quoted in the instructions and thus ensure satisfactory results”

There’s been a few fics that have Steve or Bucky knitting as a therapeutic activity so I thought I’d share this pamphlet I found while researching for a fic. It was issued during WWII to soldiers dealing with PTSD.

(If you’re interested in the actual patterns, the whole thing is available on this website as a PDF for £1.50.)

So let’s do a brief thought experiment type thing about American college tuition. I’ve heard more than one person tout the “I worked during the summer so I could pay for school” idea, and I find that hella interesting.
So let’s say you worked eight weeks (June 1-Aug 1) at minimum wage, 25 hours a week. “Why 25 hours a week,” you ask, “when full-time is 40 hours a week?” For one thing, I don’t think it’s fair to ask an 18 year old to graduate high school and immediately begin working full time at a minimum wage job in order to pursue an education to (presumably) avoid working full time at a minimum wage job. For another, it’s actually pretty fucking difficult to get full time hours at a minimum wage, entry level job — full time means benefits, so nearly all places would rather keep you just under the full time cut off. But I’ll run this math with both 25 hours, the reasonable projection, and 40 hours, the insane workaholic idealistic projection.

8 weeks x $7.25 x 25 hours = $1,450
8 weeks x $7.25 x 40 hours = $2,320

If our theory is that a high school graduate should be able to work over the summer and make enough to pay for college the next year, college should cost no more than $2,320 per year. That includes tuition, books, and class fees — I’ll give room and board a pass because I don’t think that’s a feasible adjustment to make at this point. TWO THOUSAND DOLLARS, PEOPLE. FOR A YEAR.

There are 168 hours in a week. If you worked literally all of those hours, which is obviously impossible both physically and financially, you would make $1,218. In a summer, you would make between $9.744 and $12,180 WHICH IS STILL. AT MANY SCHOOLS. LESS THAN A YEAR’S TUITION.

This is impossible. Just for comparison, LSU, my darling state university subsidized by the state which accepts state scholarships like TOPS, charges in-state residents about $8,700 a year in tuition and fees. Out of state residents pay $26,476 — again, only in tuition and fees, not books or living space or food (or parking, or the dozen other ways a university charges you money). Housing and food are an estimated $10,000 more per year.

I’ve been out of college for several years now, and I don’t regret having gone. I test exceptionally well, and my bachelor’s degree cost me no money; I actually made money off of scholarships and federal grants. Grad school brought in some student loans, but still, I am extremely fortunate in this country, and I know that. But my youngest sister is sixteen, and my stepsister has two children. College tuition and the incredibly fucked up market that is the American educational system don’t stop mattering when you graduate, or when I do. This is unacceptable, and it has to change.

Batman Puzzle, 36 x 30, oil on linen, detail

This is a detail of my painting  Batman Puzzle. The painting will be shown at CK Contemporary Gallery. Show opens May 16

Basic puzzle:  pieces are intended to be put together in a logical way in order to come up with the desired solution.


British engraver and mapmaker, John Spilsbury, created the first jigsaw puzzle in 1700 when he mounted a map on a sheet of wood which he then sawed around each individual country.  Spilsbury used his product to aid in teaching geography.

My Batman Puzzle was manufactured by Milton Bradley in 1966.

The Batman Cookies (also a puzzle since they are pieces put together in a logical way) were baked by me last week.

K. Henderson Celebrates National Puzzle Day

Batman Puzzle, 30 x 36, oil on linen

Today is National Puzzle Day.

 Basic puzzle:  pieces are intended to be put together in a logical way in order to come up with the desired solution.

British engraver and mapmaker, John Spilsbury, created the first jigsaw puzzle in 1700 when he mounted a map on a sheet of wood which he then sawed around each individual country.  Spilsbury used his product to aid in teaching geography.

My Batman Puzzle was manufactured by Milton Bradley in 1966.

The Batman Cookies (also a puzzle since they are pieces put together in a logical way) were baked by me last week.

See more of my Contemporary Realism paintings on my BLOG http://khendersonart.blogspot.com

Sign language dictionary - SPREADTHESIGN

Learn sign language by translating written text to signs

Welcome to learn sign language! This webpage is a teaching aid designed to make sign language accessible to everyone.

Here you will find an international dictionary of the following national sign languages: Swedish, English (BSL), American English (ASL), German, French, Spanish, Portuguese, Russian, Estonian, Lithuanian, Icelandic, Latvian, Polish, Czech, Japanese, Turkish. American Sign Language and baby signs are also included in this dictionary.

This webpage is administered by the Non-Governmental and Non-Profit Organization European Sign Language Centre. Though the primary objective of the Centre is to make national sign languages available to people with hearing disabilities, the overall ambition is to make sign languages accessible to everyone.

This project is an ongoing process of documenting national sign languages, we have come quite far, but much remains. We need your assistance. If you want to support our work – financially or in other ways – please contact us at info@spreadthesign.com. If you have any ideas or thoughts that you wish to share with us, please do.

We look forward to hearing from you! 


There was someone wanted to know what the cross was that Benedict was wearing;

It’s a Maltese Cross.

In the 15th century, the eight points of the four arms of the later called Maltese Cross represented the eight lands of origin, of the Knights Hospitalier, these were Auvergne, Provence (France), Aragon, Castille (Spain), Portugal, Italy, Baviere (now Germany), and England (with Scotland and Ireland).

The eight points also symbolize the eight obligations or aspirations of the knights:

  • to live in truth
  • to have faith
  • to repent one’s sins
  • to give proof of humility
  • to love justice
  • to be merciful
  • to be sincere and wholehearted
  • to endure persecution

The Maltese Cross is used as a symbol today by St John’s Ambulance Brigade. Venerable Order of St John’s main service is The St John Ambulance a volunteer-led charitable non government body which set up in 1877 in England to teach, for free, First Aid to workers in dangerous but ordinary, everyday jobs how to treat injuries and save lives.