Rechtenvrij stockbeeldmateriaal met als thema 'krijtbord'

30.683 rechtenvrije stockvideo's van krijtbord, inclusief 4K-videomateriaal en HD-videoclips van hoge kwaliteit om te downloaden.

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4K 0:35

Math and physics formulae pass through the screen and fall away. Animation of maths equations. Fast movement of plexus formulas. Science, technology Genetics biology, biotechnology, chemistry, science: stockvideo

4K 0:14

men hand in the dark with writing letter on paper with lights on it. learn and study concept: stockvideo

4K 0:11

Zoom-in time-lapse of smart person solving scientific problem writing formulas on chalkboard focused on studies. People and knowledge concept.: stockvideo

4K 0:13

Rays of light falling to the empty dark classroom. The camera panning behind rows of desks and chairs. Teaching class without students during a break. Abandoned school. Disturbing mood.: stockvideo

4K 0:11

Creative mathematician writing formulas on the chalkboard, hand close up: academic research and science concept: stockvideo

4K 0:12

empty classroom with neat desks and big green chalkboard. Back to School Cartoon or Japanese anime watercolor painting illustration style. seamless looping 4K virtual video animation background.: stockvideo

4K 0:15

Strategy in Basketball with Tactics and players symbol Animation with arrow . Field Basketball Tactical plan to achieve Goal and point.: stockvideo

4K 0:13

Rays of light falling to the empty dark classroom. The camera moves ahead passing by rows of desks and chairs. Teaching class without students during a break. Abandoned school. Disturbing mood.: stockvideo

4K 0:10

Football Tactical Strategy of Soccer Game. Drawing in blackboard animation. Tactics and arrow Goal concept
: stockvideo

4K 0:18

back to school classroom with blackboard Concept background with anime or cartoon style. seamless looping time-lapse virtual video animation background.: stockvideo

4K 0:39

Math and physics formulae pass through the screen and fall away. Animation of maths equations. Fast movement of plexus formulas. Science, technology Genetics biology, biotechnology, chemistry, science: stockvideo

4K 0:34

Pack of Animated Stroke Spot Blob. Hand Drawn Scribbles Elements. Doodle Marker, Brush, Pen, chalk. White Highlight Elements. Loop animation with Alpha channel. Grunge modern textured brush stroke.: stockvideo

4K 0:14

Close-up panning view. Black African female teacher standing at the chalkboard teaching children in a classroom in Africa: stockvideo

HD 0:14

Back-to-school frame animation on a green screen. School elements frame animation. Kids education frame.: stockvideo

4K 0:15

IT teacher recording lesson with digital camera explaining software coding in classroom with chalkboard. Education and vlogging concept.: stockvideo

4K 0:29

Asian woman teacher writing geometry equation on chalkboard, talking to students: stockvideo

4K 0:25

child kid draw a house on the asphalt with chalk . childhood mortgage dream kid concept. little girl playing draws with chalk big house. concept loan mortgage for a dream home residential building: stockvideo

4K 0:18

Tilt down shot of college girl standing by chalkboard in classroom and giving presentation in front of diverse group mates and African American professor: stockvideo

4K 0:12

Zoom-in high angle view of diverse creative team working in shared office talking cooperating using laptops writing on chalkboard wall: stockvideo

HD 0:11

Wooden Chairs in School Classroom: stockvideo

HD 0:06

Hand draws an Arrow pointing upward over growing graph on blackboard. Successful idea concept: stockvideo

HD 0:15

Camera Through Math and Equation, seamless loop in 15 seconds.: stockvideo

4K 0:59

Living slate, Blackboard in motion: stockvideo

4K 0:11

Library Old Books law and history large wooden book shelf archive concept school education study book read knowledge: stockvideo

4K 0:06

Question mark icon. Question jumping. 2d Animation, cartoon, illustration, clip art, vector. Web symbol black and white.: stockvideo

4K 0:18

Man and woman coworkers are writing on chalk board discussing business strategy in open space office. Interior, coworking space and marketing concept.: stockvideo

4K 0:09

Abstract Chalkboard Textured Background Loop/
4k animation of a vintage motion graphic with grunge school blackboard textures seamless looping: stockvideo

HD 0:37

Handwritten mathematics formulas flying from chalkboard towards camera, seamlessly looping: stockvideo

4K 0:12

Zoom-in time lapse of Arab man working in shared office writing and typing with laptop while coworkers are moving around talking cooperating. Teamwork and workplace concept.: stockvideo

4K 0:20

green screen math theory formulas, mathematics calculations ,algebra and geometry science education concept animation : stockvideo

4K 0:10

Happy diverse junior school children students gather at teacher table teaching kids looking at laptop computer using online software learning web education tech study together at class in classroom.: stockvideo

4K 0:08

Hand with white chalk drawing a line on a black rough chalkboard close-up. The concept of creativity. Sketching and education idea: stockvideo

4K 0:15

Portrait of mature adult woman wearing suit standing alone in class, smiling and looking at camera, blackboard with formulas is visible in background.: stockvideo

4K 0:17

A series of Finance Business Graph showing growth improvement success and development on chalkboard. : stockvideo

4K 0:12

Serious indian kid primary school girl holding chalk writing on blackboard. Focused latin child preteen schoolgirl learning english alphabet letter handwriting standing in classroom. Close up view.: stockvideo

HD 0:15

the hand writes on the blackboard a formula / the solution to the equation on the Board: stockvideo

HD 0:07

Education concept - ABC alphabet school blackboard concept. School teacher writing ABC alphabet in English class or preschool.on chalkboard.: stockvideo

4K 0:23

Clapper board used on green screen: stockvideo

4K 0:10

Creative mathematician writing formulas on the chalkboard, hand close up: academic research and science concept: stockvideo

4K 0:10

soccer football strategy and tactics scheme with arrow and players
: stockvideo

4K 0:07

Hand Holding Chalk and Writing Complex and Sophisticated Mathematical Formula Equation on the Blackboard. Shot on RED EPIC-W 8K Helium Cinema Camera.: stockvideo

4K 0:15

Young bald man teacher smiling confident pointing with finger to camera at university classroom: stockvideo

4K 0:09

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.: stockvideo

4K 0:12

The background of the dark concrete wall was illuminated by light reflections like water: stockvideo

4K 0:18

back to school classroom with blackboard Concept background with anime or cartoon style. seamless looping time-lapse virtual video animation background.: stockvideo

4K 0:29

A male teacher in protective face mask standing by chalkboard in front of children in the classroom. pointing at posters and explaining math lesson while working in school during covid-19 outbreak.: stockvideo

4K 0:16

Close up teacher man hand writing math formulas on chalkboard with white chalk.: stockvideo

4K 0:10

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
: stockvideo

4K 0:14

Empty classroom steady shot walking through desks: stockvideo

HD 0:10

grunge watercolor drawn question mark sign cartoon stop motion animation on paper background seamless loop - new dynamic joyful stop motion video art school science footage: stockvideo

HD 0:08

Savings. graph drawn on a chalkboard by financial expert: stockvideo

HD 0:13

Albert Einstein's Most Famous Equation E=MC2 On Chalkboard. Great For Your Science / Physics / Math Related Projects. High Quality Animation. 1080p 60fps: stockvideo

4K 0:16

Funny young man student is dancing having fun near chalkboard with formulas enjoying successful education. People and positive emotions concept.: stockvideo

4K 0:10

3d Rendering of Empty classroom : stockvideo

4K 0:09

animated question mark, black chalk section, ideal for compositing, use as a mask, ideal footage to represent the idea concept: stockvideo

4K 0:20

Female teacher taking class. Kenya.: stockvideo

4K 0:07

Elementary primary school girl pupil holding chalk writing on blackboard. Child preteen schoolgirl learning english alphabet letters handwriting standing in classroom. Close up back view.: stockvideo

4K 0:17

A series of a Finance Business Graph displaying failure/ decline/ economic losses on chalkboard. : stockvideo

4K 0:19

Empty cafe bar interior in daytime. modern coffee shop indoors with wooden counter table by chalkboard menu. cups bottles and plates on shelves by red brick wall in coffeehouse.: stockvideo

4K 0:30

Handwritten geometrical figures, calculations and equations. Higher Mathematics. Mathematical analysis. Handwritten mathematical formulas.: stockvideo

4K 0:08

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 : stockvideo

4K 0:10

Movie clapperboard appears from dark claps and fading away. Video making accessories, special equipment. Start of a new movie scene. Dark background closeup video. Film production 3D Render 4K concept: stockvideo

4K 0:10

Football plays loop over black background: stockvideo

4K 0:17

African american woman teacher smiling confident standing at university classroom: stockvideo

4K 0:10

Handball Strategy and tactics plan in Game to Achieve Goal with players symbol and line arrow. Drawing Scheme Animation on blackboard: stockvideo

4K 0:12

A brilliant mature mathematician brings a big board and completes an essay Complicated mathematical formula equation 4k: stockvideo

4K 0:11

Motion to the left showing empty school classroom with chairs under desks. Concept for pandemic.: stockvideo

HD 0:13

pointing finger demand and supply graph.: stockvideo

HD 0:09

Back-to-school frame animation on a green screen. School elements frame animation. Kids education frame. School blackboard frame. Key color, chroma color.: stockvideo

HD 0:22

An attractive girl (the owner of a coffee house) works on a tablet. Slow motion.: stockvideo

HD 0:28

Coach using Chalkboard for Soccer / Football match tactics. The gameplan is written on a blackboard with chalk. Sport diagram.: stockvideo

4K 0:15

Future Education Teacher Explaining Students Class VR Students Using VR Headset eLearning Online Teaching Online Learning Modern Education Digital Classroom Concept Slow Motion 8k: stockvideo

4K 0:15

Teacher with female students. Kenya.: stockvideo

4K 0:08

animation white heart beats on a black background drawn in chalk for valentine's day: stockvideo

4K 0:06

Pythagorean theorem on a chalkboard. Handwritten letter. Looped 4K stop motion animation: stockvideo

HD 0:10

chalk drawn question mark sign letter cartoon stop motion animation on school blackboard background seamless loop - new dynamic joyful stop motion video school science footage: stockvideo

4K 0:09

Teacher with female students. Kenya.: stockvideo

4K 0:21

Camera flies Through matrix made of white Math and Equation on Greenscreen Alpha Background. Handwritten geometrical figures, calculations and Mathematical analysis. Cognitive process. Seamless loop: stockvideo

4K 0:29

A male teacher in disposable face mask pointing at the chalkboard and giving math lesson to students while working in school during covid-19 pandemic.: stockvideo

4K 0:11

Teacher with female students. Kenya.: stockvideo

4K 0:08

Female hand with chalk. Math faceless teacher writes examples for schoolchildren on blackboard. Student, pupil girl solves system of equations on chalkboard. Algebra, mathematics in classroom: stockvideo

HD 0:07

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.: stockvideo

HD 0:11

Empty School Hallway with Dust Particles. Zoom Out. : stockvideo

4K 0:08

Question mark on chalkboard :4K Footage: stockvideo

4K 0:05

Rocket taking off symbolizing the concreteness of a project or its launch. Frame-by-frame animation. Loopable.: stockvideo

4K 0:04

Group of diverse young students standing together in classroom: stockvideo

4K 0:07

4K Pencil stroke transinion from left to right, from white to black: stockvideo

4K 0:10

Close up of African American hand of woman writing math or physics formulas with chalks on blackboard. Female teacher at school. Lesson pf mathemathics.: stockvideo

HD 0:42

Black girl drawing on chalkboard wall at daycare: stockvideo

4K 0:22

Back view of young man maths teacher writing equations on chalkboard in classroom busy with calculations. Occupation, lifestyle and people concept.: stockvideo

4K 0:08

Asian school boy wearing uniform. Portrait of happy cute little indian boy in school uniform, Adorable elementary kid showing black board. child education concept. rural india.: stockvideo

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woman in casual clothes sits on a bean bag and searches using the phone and work with laptop : stockvideo

4K 0:24

Female teacher taking class. Kenya.: stockvideo

4K 0:06

School's out for summer - or maybe fall break, winter vacation or spring break. The desks sit abandoned while students are out of school on hiatus. Handheld shot drifts over the empty desks.: stockvideo

4K 0:12

Tired bearded worker swipes sweat from forehead in small workshop closeup. Employee takes break after heavy labour. Handyman at manufacturing: stockvideo

4K 0:14

Excited preteen students using augemnted reality for studying in modern school. View of pupils with VR headsets during a computer science class.: stockvideo

HD 0:19

drawing demand supply graph on blackboard: stockvideo

4K 0:10

Handball Game Strategy with Drawing line and Players Symbol. Hand ball Tactics with arrow and Goal. Scheme Animation in black board
: stockvideo

HD 0:20

hand drawing line art showing dart symbol with white chalk on blackboard goal: stockvideo

4K 0:13

Portrait of happy mature man in glasses looking at camera smiling near chalkboard with formulas written with chalk. Education and positive emotions concept.: stockvideo

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