vídeos de stock e filmes b-roll de mathematical symbol, mathematics, mathematical formula, calculating - matematica00:15
vídeos de stock e filmes b-roll de b/w 1949 boy + girl at chalkboard doing addition problem / girl corrects boy's mistake / industrial - matematica00:14
vídeos de stock e filmes b-roll de background with flying formulas and equations on green screen - matematica00:08
vídeos de stock e filmes b-roll de abstract illuminated particles with data background texture. - matematica00:18
vídeos de stock e filmes b-roll de cu boy working on math equation with marker on glass/ new york city - matematica00:21
vídeos de stock e filmes b-roll de cu td student writing on blackboard / richmond, virginia, united states - matematica00:15
vídeos de stock e filmes b-roll de ms pan man writing chinese characters on blackboard / singapore - matematica00:12
vídeos de stock e filmes b-roll de mother homeschooling daughter, doing math on whiteboard - matematica00:13
vídeos de stock e filmes b-roll de hand holding chalk and writing complex and sophisticated mathematical formula/ equation on the blackboard. - matematica00:13
vídeos de stock e filmes b-roll de background with flying formulas and equations on green screen - matematica00:08
vídeos de stock e filmes b-roll de ms pan teacher teaching maths in classroom with flash cards / richmond, virginia, united states - matematica00:42
vídeos de stock e filmes b-roll de two african-american children do math on whiteboard - matematica00:14
vídeos de stock e filmes b-roll de montage school instructor at the blackboard teaching accounting to students / united kingdom - matematica00:30
vídeos de stock e filmes b-roll de medium shot rear view of girl figuring out math problem on chalkboard / turning around and looking satisfied - matematica00:22
vídeos de stock e filmes b-roll de ms student learning addition at blackboard with help of teacher / richmond, virginia, united states - matematica00:22
vídeos de stock e filmes b-roll de ms young woman solving long math problem on glass with marker/ new york city - matematica00:09
vídeos de stock e filmes b-roll de 4k abstract and futuristic network concept (loopable) - matematica00:09
vídeos de stock e filmes b-roll de a soft traveling into geometrical optics equations physics formulas loop animation background. stock video with green screen for chroma keying isolated on green background - matematica00:20
vídeos de stock e filmes b-roll de cu pan td mathematical formula being wrote on blackboard / singapore - matematica00:08
vídeos de stock e filmes b-roll de b/w 1920s boy doing math problems at chalkboard as other boy watches in vocational school / newsreel - matematica00:15
vídeos de stock e filmes b-roll de ms young woman writing mathematical formula on blackboard / singapore - matematica00:08
vídeos de stock e filmes b-roll de ms student doing schoolwork in class / richmond, virginia, united states - matematica00:09
vídeos de stock e filmes b-roll de background with flying formulas and equations on green screen - matematica00:08
vídeos de stock e filmes b-roll de abstract blueish twisted torus shape mobius strip three balls rotation spinning - matematica00:08
vídeos de stock e filmes b-roll de cu pan tu td student learning addition at blackboard with teacher's help / richmond, virginia, united states - matematica00:21
vídeos de stock e filmes b-roll de a young boy practices long division on a worksheet in class. - matematica00:10
vídeos de stock e filmes b-roll de concept of homeschooling in the asian family with one child. directly above close-up view over the shoulder of a boy teenage boy learning online education in the living room of their home as homeschool. schoolboy practice math and homework. - matematica00:13
vídeos de stock e filmes b-roll de educator helping schoolchildren in front row of classroom - matematica00:13
vídeos de stock e filmes b-roll de 1940s black and white medium shot calculus professor standing in front of chalkboard covered with equations / students sitting before him / audio - matematica00:06
vídeos de stock e filmes b-roll de concentrated elementary school kid wearing eyeglasses completing number addition lesson in mathematics class at school, student learning number addition on paper, self-learning - matematica00:12
vídeos de stock e filmes b-roll de baby girl playing abacus on the floor,slow motion - matematica00:20
vídeos de stock e filmes b-roll de cu shot of man writes equation on whiteboard / london, united kingdom - matematica00:21