Vídeos stock livres de direitos de Quadro negro

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Female Chief Analyst Holds Meeting Presentation for a Team of Economists. She Shows Digital Interactive Whiteboard with Growth Analysis, Charts, Statistics and Data. People Work in Creative Office
4k00:07Female Chief Analyst Holds Meeting Presentation for a Team of Economists. She Shows Digital Interactive Whiteboard with Growth Analysis, Charts, Statistics and Data. People Work in Creative Office
Hand Holding Chalk and Writing Complex and Sophisticated Mathematical Formula/ Equation on the Blackboard. Shot on RED EPIC-W 8K Helium Cinema Camera.
4k00:07Hand Holding Chalk and Writing Complex and Sophisticated Mathematical Formula/ Equation on the Blackboard. Shot on RED EPIC-W 8K Helium Cinema Camera.
Abstract Chalkboard Textured Background Loop/ 4k animation of a vintage motion graphic with grunge school blackboard textures seamless looping
4k00:09Abstract Chalkboard Textured Background Loop/ 4k animation of a vintage motion graphic with grunge school blackboard textures seamless looping
Math teacher writing equation or function on blackboard in school classroom. Student doing exercise on chalkboard in university or college. Woman teaching or studying. Close up with camera movement.
4k00:09Math teacher writing equation or function on blackboard in school classroom. Student doing exercise on chalkboard in university or college. Woman teaching or studying. Close up with camera movement.
Time-Lapse of the Brilliant Young Mathematician Writes Complex Equation on the Blackboard. Shot on RED EPIC-W 8K Helium Cinema Camera.
4k00:16Time-Lapse of the Brilliant Young Mathematician Writes Complex Equation on the Blackboard. Shot on RED EPIC-W 8K Helium Cinema Camera.
Brilliant Young Mathematician Approaches Blackboard and Finishes Solving Long and Complex Equation. Shot on RED EPIC-W 8K Helium Cinema Camera.
4k00:14Brilliant Young Mathematician Approaches Blackboard and Finishes Solving Long and Complex Equation. Shot on RED EPIC-W 8K Helium Cinema Camera.
Hand Holding Chalk and Writing Complex and Sophisticated Mathematical Formula on the Blackboard. Underlining Equation. Shot on RED EPIC-W 8K Helium Cinema Camera.
4k00:16Hand Holding Chalk and Writing Complex and Sophisticated Mathematical Formula on the Blackboard. Underlining Equation. Shot on RED EPIC-W 8K Helium Cinema Camera.
hand-drawn scribbles transition, doodles and sketch effects with black color pencil on chroma key green screen background, with alpha channel,imagination education child concept
4k00:08hand-drawn scribbles transition, doodles and sketch effects with black color pencil on chroma key green screen background, with alpha channel,imagination education child concept
Back View of the Students in the Lecture Hall Listening to a Prominent Professor Giving a Lecture. Charismatic Lecturer Reads to the Bright Young People Study at the University.
4k00:11Back View of the Students in the Lecture Hall Listening to a Prominent Professor Giving a Lecture. Charismatic Lecturer Reads to the Bright Young People Study at the University.
Close up female hold in hand classic director clear empty black film making clapperboard isolated on yellow orange background studio. Cinematography production concept. Copy space advertising mock up.
hd00:07Close up female hold in hand classic director clear empty black film making clapperboard isolated on yellow orange background studio. Cinematography production concept. Copy space advertising mock up.
Concepts on blackboard at school. Young people, students and pupils in classroom. Smart hispanic girl writing math formula on board during lesson. Portrait of female child smiling, looking at camera
4k00:10Concepts on blackboard at school. Young people, students and pupils in classroom. Smart hispanic girl writing math formula on board during lesson. Portrait of female child smiling, looking at camera
Brilliant Young Academic Finishes Writing Big and Complex Mathematical Formula/ Equation on the Blackboard. Shot on RED EPIC-W 8K Helium Cinema Camera.
4k00:14Brilliant Young Academic Finishes Writing Big and Complex Mathematical Formula/ Equation on the Blackboard. Shot on RED EPIC-W 8K Helium Cinema Camera.
animated question mark, black chalk section, ideal for compositing, use as a mask, ideal footage to represent the idea concept
4k00:09animated question mark, black chalk section, ideal for compositing, use as a mask, ideal footage to represent the idea concept
Back to school. Car delivering books and apple against school blackboard with education symbols. Seamlessly looped 4k animation.
4k00:08Back to school. Car delivering books and apple against school blackboard with education symbols. Seamlessly looped 4k animation.
Random chaotic curves on black background. Hand drawn dinamic scrawls. These hand-drawn scribbles, doodles can be used as Luma Mattes for videotransitions.
hd00:07Random chaotic curves on black background. Hand drawn dinamic scrawls. These hand-drawn scribbles, doodles can be used as Luma Mattes for videotransitions.
Happy smiling professor, scientist, or math genius looking directly at the camera standing in front of a blackboard
4k00:08Happy smiling professor, scientist, or math genius looking directly at the camera standing in front of a blackboard
Team of Analytics, Economists and Young Businesspeople Hold Meeting Presentation use Shows Digital Interactive Whiteboard with Growth Analysis, Charts, Statistics and Data. People Work in Office
4k00:09Team of Analytics, Economists and Young Businesspeople Hold Meeting Presentation use Shows Digital Interactive Whiteboard with Growth Analysis, Charts, Statistics and Data. People Work in Office
Coach using Chalkboard for Soccer / Football match tactics. The gameplan is written on a blackboard with chalk. Sport diagram.
hd00:28Coach using Chalkboard for Soccer / Football match tactics. The gameplan is written on a blackboard with chalk. Sport diagram.
Wooden Chairs in School Classroom
hd00:11Wooden Chairs in School Classroom
snowfalling, beautiful Gold Floating Dust Particles with Flare on Black Background
4k00:34snowfalling, beautiful Gold Floating Dust Particles with Flare on Black Background
Following Close-up Shot of the Hand Holding Chalk and Writes Complex Mathematical Formula/ Equation on the Blackboard. Shot on RED EPIC-W 8K Helium Cinema Camera.
4k00:15Following Close-up Shot of the Hand Holding Chalk and Writes Complex Mathematical Formula/ Equation on the Blackboard. Shot on RED EPIC-W 8K Helium Cinema Camera.
4k close view of pupils in classroom of African children writing English in school notebooks.
4k00:164k close view of pupils in classroom of African children writing English in school notebooks.
Concepts on blackboard at school. Young people, students and pupils in classroom. Intelligent and successful latino boy in class. Portrait of male kid smiling, looking at camera
4k00:15Concepts on blackboard at school. Young people, students and pupils in classroom. Intelligent and successful latino boy in class. Portrait of male kid smiling, looking at camera
Concept on blackboard at school. Young people, student and pupil in classroom. Intelligent and successful hispanic girl in class. Portrait of female child smiling, looking at camera, holding books
4k00:13Concept on blackboard at school. Young people, student and pupil in classroom. Intelligent and successful hispanic girl in class. Portrait of female child smiling, looking at camera, holding books
Question mark drawn in chalk on a blackboard
hd00:08Question mark drawn in chalk on a blackboard
Camera Through Math and Equation, seamless loop in 15 seconds.
hd00:15Camera Through Math and Equation, seamless loop in 15 seconds.
Detective board with photos of suspected criminals, crime scenes and evidence with red threads
4k00:08Detective board with photos of suspected criminals, crime scenes and evidence with red threads
Hand Holding Chalk and Writing Complex and Sophisticated Mathematical Formula/ Equation on the Blackboard. Shot on RED EPIC-W 8K Helium Cinema Camera.
4k00:16Hand Holding Chalk and Writing Complex and Sophisticated Mathematical Formula/ Equation on the Blackboard. Shot on RED EPIC-W 8K Helium Cinema Camera.
Question mark on chalkboard :4K Footage
4k00:08Question mark on chalkboard :4K Footage
High-Angle Shot of a Brilliant Young Student Writing Big Sophisticated Mathematical Formula/ Equation on the Blackboard. Shot on RED EPIC-W 8K Helium Cinema Camera.
4k00:11High-Angle Shot of a Brilliant Young Student Writing Big Sophisticated Mathematical Formula/ Equation on the Blackboard. Shot on RED EPIC-W 8K Helium Cinema Camera.
Closeup young doctor or surgeons in a modern clinic room taking off the surgical mask and smiling large in front of the camera , curly hair and white teeth. 4k
4k00:09Closeup young doctor or surgeons in a modern clinic room taking off the surgical mask and smiling large in front of the camera , curly hair and white teeth. 4k
Scientist writing formulas on chalkboard. Hand with chalk wrote physics formulas on black chalkboard closeup
4k00:08Scientist writing formulas on chalkboard. Hand with chalk wrote physics formulas on black chalkboard closeup
Education concept - ABC alphabet school blackboard concept. School teacher writing ABC alphabet in English class or preschool.on chalkboard.
hd00:07Education concept - ABC alphabet school blackboard concept. School teacher writing ABC alphabet in English class or preschool.on chalkboard.
Brilliant Young Academic Approaches Blackboard with Complex Mathematical Formula Written on it, Starts Thinking about Solution. Shot on RED EPIC-W 8K Helium Cinema Camera.
4k00:17Brilliant Young Academic Approaches Blackboard with Complex Mathematical Formula Written on it, Starts Thinking about Solution. Shot on RED EPIC-W 8K Helium Cinema Camera.
Rear view of male university professor solving complex calculus problem on blackboard
4k00:28Rear view of male university professor solving complex calculus problem on blackboard
Time-Lapse/ Stop Motion of the Young Man Drawing on Blackboard Inspirational Keywords for Business Start-up. Colorful Drawings with Bits of Wisdom. Shot on RED EPIC-W 8K Helium Cinema Camera.
4k00:12Time-Lapse/ Stop Motion of the Young Man Drawing on Blackboard Inspirational Keywords for Business Start-up. Colorful Drawings with Bits of Wisdom. Shot on RED EPIC-W 8K Helium Cinema Camera.
Writing Pi. Writing pi number on the blackboard. The sign is written on a chalk board. Male hand draws in chalk on a blackboard.
4k00:12Writing Pi. Writing pi number on the blackboard. The sign is written on a chalk board. Male hand draws in chalk on a blackboard.
Homeless child. Portrait of a homeless child. Refugee camp. Sad little girl behind the fence. Child abuse.
hd00:10Homeless child. Portrait of a homeless child. Refugee camp. Sad little girl behind the fence. Child abuse.
Long Shot of The Busy Office Where Young Creative People Work on Personal Computers, Draw Project Outline on Blackwall and Have Discussions with Colleagues. Stylish People in Trendy Environment. UHD.
4k00:16Long Shot of The Busy Office Where Young Creative People Work on Personal Computers, Draw Project Outline on Blackwall and Have Discussions with Colleagues. Stylish People in Trendy Environment. UHD.
Talanted dj is creating music in a recording studio on a mixing console.
4k00:24Talanted dj is creating music in a recording studio on a mixing console.
scientist wrote mathematical formulas on a blackboard
4k00:36scientist wrote mathematical formulas on a blackboard
cartoon marker drawn planet earth globe spin on white blackboard background seamless endless loop animation - new quality unique handmade retro vintage stop motion dynamic joyful video
hd00:06cartoon marker drawn planet earth globe spin on white blackboard background seamless endless loop animation - new quality unique handmade retro vintage stop motion dynamic joyful video
Brilliant Young Mathematician Approaches Big Blackboard and Thinks about Solving Long and Complex Equation/ Formula. Shot on RED EPIC-W 8K Helium Cinema Camera.
4k00:16Brilliant Young Mathematician Approaches Big Blackboard and Thinks about Solving Long and Complex Equation/ Formula. Shot on RED EPIC-W 8K Helium Cinema Camera.
Back to school looped 4k animation. Car delivering books and apple against school blackboard with education symbols.
4k00:08Back to school looped 4k animation. Car delivering books and apple against school blackboard with education symbols.
Bidibidi Settlement in northwestern Uganda hosts over 250,000 refugees from Sudan, South Sudan and Democratic Republic of Congo.
4k00:10Bidibidi Settlement in northwestern Uganda hosts over 250,000 refugees from Sudan, South Sudan and Democratic Republic of Congo.
Portrait shot of cute schoolgirl standing against blackboard with complex calculus formulas and posing with her arms crossed
4k00:07Portrait shot of cute schoolgirl standing against blackboard with complex calculus formulas and posing with her arms crossed
Concepts on blackboard at school. Young people, quiet student and pupil in classroom. Hispanic boy with doubts and thoughts in class. Portrait of male child thinking
4k00:18Concepts on blackboard at school. Young people, quiet student and pupil in classroom. Hispanic boy with doubts and thoughts in class. Portrait of male child thinking
Diligent schoolboy holding textbook, standing near blackboard, education system
4k00:05Diligent schoolboy holding textbook, standing near blackboard, education system
Hand Holding Chalk and writing a Mathematical Formula or Equation on the Blackboard .
4k00:11Hand Holding Chalk and writing a Mathematical Formula or Equation on the Blackboard .
Digitally generated of math formulas on blackboard
4k00:15Digitally generated of math formulas on blackboard
Handheld tracking shot with close up of male university professor writing math formula on chalkboard
4k00:13Handheld tracking shot with close up of male university professor writing math formula on chalkboard
Desks in empty classroom, lecture hall in the College, School, University. The study hall represents lack of state funding
4k00:16Desks in empty classroom, lecture hall in the College, School, University. The study hall represents lack of state funding
scientist wrote mathematical formulas on a blackboard
4k00:20scientist wrote mathematical formulas on a blackboard
Advertisement for a huge sale. Set of swing tags animation template discounts 10% 20% 30% 40% 50% 60% Neon discounts. Discounts glow in the dark. ?oncept of sales, discounts, black Friday
4k00:24Advertisement for a huge sale. Set of swing tags animation template discounts 10% 20% 30% 40% 50% 60% Neon discounts. Discounts glow in the dark. ?oncept of sales, discounts, black Friday
Camera Facing Class: Prominent Professor Writing on the Blackboard and Giving Lecture to a Classroom Full of Multi Ethnic Students. Modern University with Bright Young People in the Lecture Hall.
4k00:11Camera Facing Class: Prominent Professor Writing on the Blackboard and Giving Lecture to a Classroom Full of Multi Ethnic Students. Modern University with Bright Young People in the Lecture Hall.
Empty classroom with wooden desks, white and green chalk boards in school. empty classroom. Abandoned School classroom with school desks and blackboard
4k00:07Empty classroom with wooden desks, white and green chalk boards in school. empty classroom. Abandoned School classroom with school desks and blackboard
the hand writes on the blackboard a formula / the solution to the equation on the Board
hd00:15the hand writes on the blackboard a formula / the solution to the equation on the Board
Concept on blackboard at school. Young people, student and pupil in classroom. Smart hispanic boy writing math formula on board during lesson. Portrait of male child smiling, looking at camera
4k00:12Concept on blackboard at school. Young people, student and pupil in classroom. Smart hispanic boy writing math formula on board during lesson. Portrait of male child smiling, looking at camera
Lockdown of glass wall with chart on foreground and Indian student behind it cleaning some place of wall with blackboard duster, and then correcting chart with black marker
hd00:21Lockdown of glass wall with chart on foreground and Indian student behind it cleaning some place of wall with blackboard duster, and then correcting chart with black marker
4K Portrait of academic man writing math formulas on blackboard
4k00:264K Portrait of academic man writing math formulas on blackboard
2d Animation motion graphics drawing of an American football game plan diagram of Xs and Os offensive strategy on white and green screen with alpha matte in HD high definition.
hd00:092d Animation motion graphics drawing of an American football game plan diagram of Xs and Os offensive strategy on white and green screen with alpha matte in HD high definition.
Concept Of Woman And Question Mark Drawn In Chalk On Blackboard. Female draws a question mark on the blackboard
4k00:10Concept Of Woman And Question Mark Drawn In Chalk On Blackboard. Female draws a question mark on the blackboard
Dolly-in shot of woman walking towards blackboard and solving calculus problem
4k00:19Dolly-in shot of woman walking towards blackboard and solving calculus problem
blackboard with soccer strategies simulation for the attack
4k00:08blackboard with soccer strategies simulation for the attack
Top Manager and Female Executive Outlining Company Optimization Plan on a Glass Blackboard, Drawing with Market and Using Smartphone while Standing in the Modern Glass and Concrete Office.
4k00:14Top Manager and Female Executive Outlining Company Optimization Plan on a Glass Blackboard, Drawing with Market and Using Smartphone while Standing in the Modern Glass and Concrete Office.
hand-drawn scribbles transition, doodles and sketch effects with black color pencil on chroma key green screen background, with alpha channel,imagination education child concept
4k00:08hand-drawn scribbles transition, doodles and sketch effects with black color pencil on chroma key green screen background, with alpha channel,imagination education child concept
A male architect creates a drawing of a building on paper. To study the design of premises, to create furniture and houses. Large modern office draw on blackboard
4k00:23A male architect creates a drawing of a building on paper. To study the design of premises, to create furniture and houses. Large modern office draw on blackboard
Handwritten mathematics formulas flying from chalkboard towards camera, seamlessly looping
hd00:37Handwritten mathematics formulas flying from chalkboard towards camera, seamlessly looping
Food Truck owner opening for business
4k00:20Food Truck owner opening for business
Hand writing 2020 on blackboard with chalk
4k00:09Hand writing 2020 on blackboard with chalk
Young people and education. Group of hispanic students in class at school during lesson. Teacher writing on blackboard
4k00:13Young people and education. Group of hispanic students in class at school during lesson. Teacher writing on blackboard
High-Angle Shot of a Brilliant Young Student Writing Complex Mathematical Formula/ Equation on the Blackboard. Shot on RED EPIC-W 8K Helium Cinema Camera.
4k00:10High-Angle Shot of a Brilliant Young Student Writing Complex Mathematical Formula/ Equation on the Blackboard. Shot on RED EPIC-W 8K Helium Cinema Camera.
chalk draw question mark sign animation on blackboard background seamless loop \ new dynamic joyful video footage
hd00:10chalk draw question mark sign animation on blackboard background seamless loop \ new dynamic joyful video footage
Brilliant Young Mathematician Approaches Big Blackboard and Finishes writing Formula, Turns Around and Smiles on Camera. Shot on RED EPIC-W 8K Helium Cinema Camera.
4k00:15Brilliant Young Mathematician Approaches Big Blackboard and Finishes writing Formula, Turns Around and Smiles on Camera. Shot on RED EPIC-W 8K Helium Cinema Camera.
Drawing smiley with chalk on wet blackboard
hd00:05Drawing smiley with chalk on wet blackboard
Row of light bulbs chalk drawing on blackboard. Concept of idea.
hd00:08Row of light bulbs chalk drawing on blackboard. Concept of idea.
Chalk writing - ? on chalkboard
hd00:07Chalk writing - ? on chalkboard
Little schoolboy in white shirt and eyeglasses standing against blackboard with animated chalk drawings of question marks, rubbing his chin and thinking about something
4k00:08Little schoolboy in white shirt and eyeglasses standing against blackboard with animated chalk drawings of question marks, rubbing his chin and thinking about something
Yes or No decision making - choosing YES on chalkboard
4k00:06 Yes or No decision making - choosing YES on chalkboard
Teacher writing question mark on blackboard
4k00:18Teacher writing question mark on blackboard
Teacher is writing letter of alphabet on blackboard with chalk. Education in elementary school concept.
4k00:10Teacher is writing letter of alphabet on blackboard with chalk. Education in elementary school concept.
4K Happy little scientist with fake mustache writing math formulas on blackboard
4k00:134K Happy little scientist with fake mustache writing math formulas on blackboard
Old senior woman teacher with serious attitude posing in front of chalkboard. Charming mature woman with arms on her waist looking at camera . 4k
4k00:20Old senior woman teacher with serious attitude posing in front of chalkboard. Charming mature woman with arms on her waist looking at camera . 4k
Male teenager trying to solve math equation at high school blackboard
hd00:26Male teenager trying to solve math equation at high school blackboard
Learning process at school, teacher calls the student to the blackboard, the boy writes with chalk on the blackboard.
4k00:26Learning process at school, teacher calls the student to the blackboard, the boy writes with chalk on the blackboard.
School classroom with desks and blackboard
4k00:10School classroom with desks and blackboard
Clever preadolescent redhead girl raising hand and going to blackboard during math lesson in primary school. Mixed race female teacher writing math task on blackboard for elementary school students
4k00:38Clever preadolescent redhead girl raising hand and going to blackboard during math lesson in primary school. Mixed race female teacher writing math task on blackboard for elementary school students
Female Developer with Tablet Computer Talks With Programer and Project Manager, They use Blackboard Wall as a Planner. They Work in the Stylish Creative Office. Shot on RED EPIC-W 8K Helium Camera.
4k00:13Female Developer with Tablet Computer Talks With Programer and Project Manager, They use Blackboard Wall as a Planner. They Work in the Stylish Creative Office. Shot on RED EPIC-W 8K Helium Camera.
the hand writes on the blackboard a formula / the solution to the equation on the Board
hd00:16the hand writes on the blackboard a formula / the solution to the equation on the Board
Young teacher lectures at the School of Mathematics, writes chalk on a blackboard
4k00:10Young teacher lectures at the School of Mathematics, writes chalk on a blackboard
Time-Lapse of the Brilliant Young Mathematician Writing Formula on the Blackboard. Shot on RED EPIC-W 8K Helium Cinema Camera.
4k00:14Time-Lapse of the Brilliant Young Mathematician Writing Formula on the Blackboard. Shot on RED EPIC-W 8K Helium Cinema Camera.
Drawing a question mark transformed into a light bulb. Concept of idea coming from thinking. Motion stop style like with chalk on a blackboard.
4k00:10Drawing a question mark transformed into a light bulb. Concept of idea coming from thinking. Motion stop style like with chalk on a blackboard.
coach with a blackboard with tactics with white background
hd00:31coach with a blackboard with tactics with white background
Teacher lecturer in classroom is drawing on blackboard letters A and B, speaking. Lesson, lecture. School, institute, university, academy. Students, pupils.
hd00:07Teacher lecturer in classroom is drawing on blackboard letters A and B, speaking. Lesson, lecture. School, institute, university, academy. Students, pupils.
Camera Facing Class: Prominent Professor Writing on the Blackboard and Giving Lecture to a Class of Multi Ethnic Students. Modern University with Bright Young People in the Lecture Hall. 4K UHD.
4k00:08Camera Facing Class: Prominent Professor Writing on the Blackboard and Giving Lecture to a Class of Multi Ethnic Students. Modern University with Bright Young People in the Lecture Hall. 4K UHD.
4K Portrait of thinking woman sitting in front of blackboard with math formulas
4k00:174K Portrait of thinking woman sitting in front of blackboard with math formulas
Learning chinese to tell time in class room.
4k00:24Learning chinese to tell time in class room.
Hand draw Romantic Heart Shape Animation on Chalkboard. 4K Stop Motion Valentines Day Design Background Concept.
4k00:06Hand draw Romantic Heart Shape Animation on Chalkboard. 4K Stop Motion Valentines Day Design Background Concept.
Push in towards blank chalkboard over empty school desks. The elementary school classroom has been abandoned. The campus has been evicted due to bullying, budget cuts, and lowered attendance rates.
4k00:07Push in towards blank chalkboard over empty school desks. The elementary school classroom has been abandoned. The campus has been evicted due to bullying, budget cuts, and lowered attendance rates.
Back to school looped 4k animation. Toy car delivering books and apple against green colored school blackboard with education symbols.
4k00:12Back to school looped 4k animation. Toy car delivering books and apple against green colored school blackboard with education symbols.
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