Why Are Blackboards Green?

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Why are some chalkboards green when they used to be black? In this video, we’ll explore the fascinating history behind the shift from blackboards to green chalkboards and how this change impacted education. From reducing eye strain to improving classroom visibility, there’s more to this color switch than meets the eye.
Whether you're feeling nostalgic for your school days or just curious about this classroom staple, you’ll learn all about why some chalkboards aren’t black anymore.
Timestamps:
00:16 - Intro
00:52 - The History of Chalkboards
02:04 - From Black to Green: When the Change Happened
02:55 - Why Green? The Science Behind the Color Choice
04:03 - Practical Benefits of Green Chalkboards
05:08 - The Rise of Whiteboards and the Chalkboard’s Legacy
06:59 - Conclusion
#ChalkboardHistory #WhyChalkboardsAreGreen #ClassroomTools #EducationHistory #GreenChalkboard #SchoolDays #BlackboardVsWhiteboard #EyeStrain #Nostalgia #LearningTools #Chalkboard

Опубликовано:

19 сен 2024

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Комментарии : 56

@k.b.tidwell 2 дня назад

On a subliminal level I feel that chalkboards are better than whiteboards. Writing with a piece of rock onto another piece of rock feels solid to me, instead of wispy and transient like using an evaporative chemical-based marker on a synthetic material. My brain feels like the knowledge I gain from a chalkboard is more valuable than that gained off a whiteboard.

@neverinthemoment День назад

I was a child in the 1950's and I absolutely remember living through this transition from black to green. Green was my favorite color at the time so it definitely had my vote. Thank You so much for explaining how and why it happened!

@JamesPhieffer 2 дня назад

My elementary school opened around 1970, so when I started there later that decade, the chalkboards were green. When I went to junior high in grade 7, it was a much older school with blackboards. I assumed the difference was due to the relative ages of the schools - green was just the new thing. And forty+ years later, I finally know the whole story. As to whiteboards, I'm inclined to wonder if, in a school environment, it's just change for changes sake. After all, there was coloured chalk long before whiteboards were dreamt up.

@robertgaines-tulsa День назад

I remember greenboards being used to a degree in the mid-80s in my early grades. They used yellow chalk with them for better contrast. Beyond that, my school district used blackboards all the way through my graduation in the late 90s. Only my computer programming teacher started using whiteboards. He actually glued whiteboards over his blackboards. Teachers also took advantage of the steel in chalkboards to attach magnets to them. In my senior year of high school in the late 90s, some teachers were experimenting with using the old CRT TV sets mounted in their rooms with them connected to their computer to use them as a supplemental, digital board. Sometime in the 2000s, my school district switched to smartboards. Besides showing information digitally on the board, they could also play videos on them. It's something I missed out on, but the TVs connected to a computer was basically a sample of what was to come.

@catreader9733 День назад

Regarding the option of color when using whiteboards: My first elementary school had actual slate blackboards. Our teachers used brightly colored chalks to highlight key elements. Bonus was that on special occasions the students were allowed to use one or two panels to draw mural-like expansive drawings. The two classrooms had a large area of blackboard to student ratio, which worked both for the artistic expression and for teaching multiple grades in one classroom. When I moved to a modern elementary school, the extremely smooth green chalkboards were not a surprise, but I was bemused at first by the pale yellow "dustless" chalk.

@smorris281 2 дня назад

I much preferred classrooms with blackboards, not green. I have a visual impairment, and it’s much easier for me to see white and yellow on back than green. It got even worse for me when some of the newer schools I went to had white boards. I could hardly see anything, unless black was used. Chalk boards are also easier and cheaper to clean with water. White boards require a chemical spray to clean every week usually.

@rockcat5000 День назад

My first memories were of the black chalkboards. There were oiled erasers to deep clean the slate at the end of the week. Then came the green boards, where lint stuck to the surface when wet cleaning. I was in college before whiteboards showed up. The early ones were horrible. The colors stained the surface. They were smaller. Harder to see from the back of the room. Some place in there came the paper flip tablet, usually filled out before class. Chalkboards were the best, however.

@NoEgg4u День назад

I find black chalkboards to be easier on the eyes than green chalkboards.

@3DJapan 2 дня назад

Another benefit to painted steel is that magnets stick to it.

@stumpybear60 День назад

A number of my math and science classes used overhead projectors instead. The teach would sit and write on the blank transparency. They would have a few pre-made transparancies that they would write on with the water based markers. Clean up was a simple wet cloth or paper towel.

@paulromsky9527 День назад

I can see green being a bit easier on the eyes, but a green background with white markings does not offer more contrast. Black and white offers the most contrast. The paint developed turned out to be green due to the formula having the best durability and performance than black/grey slate boards. If that had turned out to be blueish instead, then blue boards would have been more popular. If green is "supposed" to offer more contrast and provide less eye strain, then why aren't books printed on green paper with white lettering... simple, its more expensive but also you can't beat black lettering on a white background for contrast. Hence the proliferation of white boards.

@HieronymusChockvivantvanit День назад

We had yellow chalk on green boards. Yellow on green had more contrast than white on green and was easier on the eyes.

@rchatell 2 дня назад

My elementary school was built in 1957-58, and it had green chalkboards.

@elylioney6390 18 часов назад

I like blackboards more than whiteboards

@MillerMeteor74 День назад

I graduated in 1981, so I was in school throughout the 70s. I remember both black and green chalkboards, and never thought anything of it. I never knew there was a shift from black to green. I just thought both were being made, without any special reason. But I thought it would be interesting to watch this video, and it was. I remember sometime when I was in high school (in a small Christian school), the school switched to white boards. Maybe I was a junior or senior at the time.

@veitkunz9524 День назад

In Germany, the green blackboard is the very default in most schools.

@catreader9733 День назад

Cleaning erasers by using the custodian's heavy duty vacuum cleaner was a cherished chore in my primary schools. During the school day, the vacuum was parked in a cul de sac, with the hose detached.

@winstonelston5743 2 дня назад

There's something about the staccato click of chalk on a chalkboard. It has a way of making the most arcane scientific concepts more understandable. I still think about Dr. Powers in the Geology Department at GSU drawing perfect circles freehand in less than a second with enough accuracy to make near-perfect sketches from polarizing microscope slides. Thinking back to "Combat English" (an unofficial nickname for certain sections of ninth grade English at Columbia Military Academy), I was present when Tom Jones put his fist through the chalkboard and dislodged several bricks from the wall behind it. I was also there when he kicked a trash can through a closed door, the teacher in the next room leaning through with the ultimate understatement, "Is everything all right, Tom?" Old Jonesie, he was gruff on the outside, but he had a heart of gold and the soul of a poet.

@3DJapan 2 дня назад

I remember in the early 90s in grade school my computer teacher had a whiteboard but not just any one. First it could scroll to hide what you wrote and reveal clean board. Second, it could print out what you had hidden. It was the first time we'd ever seen a whiteboard at all so this was REALLY cool.

@michaelduke4500 2 дня назад

When I was in school, we had green chalkboards and most teachers used light yellow chalk. Fast forward to the '80s computer screens, most were either green characters or green backgrounds.

@w2tty 2 дня назад

Nice visuals. Seeing teachers using them brought back a lot of memories.

@stumpybear60 День назад

The older buildings all had slate boards that were black (built before 1960). The newer buildings had green boards (built after 1960). This changed in college where the boards were all brown in the original building (built in 1973). The newer buildings had green boards or white dry erase boards.

@muleman1701 День назад

I could see the blackboad and white chalk better than the green boards. When My school went to white boards in the 90s some teachers made the whiteboard slideable and still used it and the green chalkboard before finally going to all whiteboard. But, one thing you didn't mention that I have heard personally is fingernails on a chalkboard. Had a substitute teacher to that once as my classmates were being unrulely and talk about a sound you never forget... thirty plus years later and I can still see and hear that moment! Try that with a whiteboard!

@heptagrammar21 2 дня назад

Our blackboards in school were mader of concrete, covered with died black slurry to achieve a smooth finish. In our college boards were made out of plywood and painted black, it was awful because the plywood would chip away. Now in university we have green boards.

@aaron74 2 дня назад

I remember my elementary school's chalk boards were a dark brown. There were black rules across it to help write straight.

@Robb-jf7vg 2 дня назад

In my youth an school years (b. 1953) all the boards were green! And most of the time, Teacher's chalk was yellow!

@stevencoghill4323 2 дня назад

Our high school had some brown boards too (brown paint instead of green)

@arthurgordon6072 День назад

The first time I came across a green 'chalkboard' was in the mid sixties. The 'board' was flexible and could be rolled over.

@catreader9733 День назад

I presumed the pale yellow chalk that arose with the green chalkboards was for increased contrast. Usually both the pale yellow and white were available. "Dustless" chalk (I think introduced soon after green chalkboards in schools) was harder and produced thinner and paler strokes than unimproved chalk.

@Grey_Duck День назад

I hated those green ones. They were too smooth and didn’t pick up the chalk as well.

@HentikanBuzzeRp День назад

Cheap? In my country, green ones looks more expensive than black one, at the dimension of size.

@brianwindus 2 дня назад

Even when green, it's still a blackboard.

@brycecombs2868 2 дня назад

As a teacher, at the end of the day I looked like a ghost.🤦

@Skyrocketwebdesign День назад

All chalkboards were green when I was in school.

@LarryRobinsonintothefog 2 дня назад

Only remember green chalk boards in the 1st grade and black chalk boards in maybe the rest. White boards didn't come till college.

@דבמרקו День назад

The best color combination is black on yellow

@johnnessuno6515 День назад

Out of all the channels I've seen on RU-vid in the last 17 plus years, I don't believe any of them covered this topic. Types of chalk, chalk sources, psysics of chalk,, Non edit- about a minute into the video.,, The black ones were slate. I knew this. Why did I think it was something more manufactured than a porous lattice structure rock.

@toddatglencovewoodworks День назад

How about the history of the bottle cap?

@gerhardlesch3615 День назад

Isn't partial green colour blindness the most common type?

@ArchDudeify День назад

I would like to see a hugbees crossover

@mineown1861 День назад

Chalk squeak , did it diminish with green boards ? Are roller boards immune to squeak ? Is marker squeak on whiteboard more irritating than chalk squeak on blackboard ? Should interactive whiteboards feature a squeak Easter egg ?

@jensschroder8214 День назад

On whiteboards, the pens are often dried out and unusable. White chalk on green boards is cheap and reliable.

@robertnorth7609 2 дня назад

God help you if you accidently use a Sharpie on a whiteboard.

@s1monstar23 День назад

What about them being magnetic?

@CypherSpectre День назад

My chalkboard is blue.

@glennso47 2 дня назад

Now we know why chalk boards are now green. If you know what I mean. 😊 😊)

@kevinhoward9593 2 дня назад

yeah schools dont use these anymore,. they use smart boards.

@earthstewardude День назад

They came from Greenland?

@Colorado_Native 2 дня назад

Back in the 1980s I was a Military Training Instructor, a TI. We were not allowed to call it a blackboard because it was racist. I'm not kidding. We had to call them chalkboards.

@mrtienphysics666 2 дня назад

now white board

@jaswmclark 2 дня назад

Chalk would not show up on white boards!

@rawcado 2 дня назад

Because not all Blackboards Matter. Oh yeah, FIRST!! 😅🤣😂😆

@Couchflyer-NY 2 дня назад

Slate boards were blackboards before they turned green. So, why aren’t they called green boards instead of chalkboards? Chalkboards should be white but whiteboards can’t use chalk. Next slide please.