4K African american teacher showing seedlings in classroom as boy giving bottle kids watching education learning demonstration 影视素材 African american teacher showing seedlings in classroom as boy giving bottle kids watching education learning demonstration 影视素材
4K Happy caucasian little girl child and woman teacher showing thumbs up in classroom approving lesson success learning happy 股票视频 Happy caucasian little girl child and woman teacher showing thumbs up in classroom approving lesson success learning happy 股票视频
4K 非裔美国人教师举起杯子，展示在实验室台面上进行的试管演示，教授 STEM 课程，留白空间 股票录像 非裔美国人教师举起杯子，展示在实验室台面上进行的试管演示，教授 STEM 课程，留白空间 股票录像
4K African american teacher in green top showing solar panel class asking urging boy raising hand renewable energy stem classroom 股票视频 African american teacher in green top showing solar panel class asking urging boy raising hand renewable energy stem classroom 股票视频
4K Female teacher showing to female youth at lab bench reaching arranging green test tubes in rack classroom science mentorship 股票视频 Female teacher showing to female youth at lab bench reaching arranging green test tubes in rack classroom science mentorship 股票视频
4K Children watching african american woman teacher showing green test tube at lab bench observing children watching african american 股票视频 Children watching african american woman teacher showing green test tube at lab bench observing children watching african american 股票视频
4K African american teacher showing finger moves girl copying at desk with closed laptop learning african american teacher showing 股票视频 African american teacher showing finger moves girl copying at desk with closed laptop learning african american teacher showing 股票视频
4K Teacher in class passion on screen showing pointing while youth raising hands and answering classroom students interaction 股票录像 Teacher in class passion on screen showing pointing while youth raising hands and answering classroom students interaction 股票录像
4K Female african american teacher leading class while screen showing passion class raising hands classroom engagement participation 股票录像 Female african american teacher leading class while screen showing passion class raising hands classroom engagement participation 股票录像
4K Teacher holding remote display showing passion youth wearing vr headset gesturing for class virtual education interactive 股票录像 Teacher holding remote display showing passion youth wearing vr headset gesturing for class virtual education interactive 股票录像
4K Diverse class watching teacher showing plant at board misting sprouts learning plant care seedling fern magnifier classroom 股票录像 Diverse class watching teacher showing plant at board misting sprouts learning plant care seedling fern magnifier classroom 股票录像
4K Teacher with children placing plants and turbines in class spraying plants and showing wind power instructor students classroom 股票录像 Teacher with children placing plants and turbines in class spraying plants and showing wind power instructor students classroom 股票录像
4K Lab coat teacher with kids with goggles in lab picking up beaker pouring solution showing reaction lab coat teacher with kids with 股票视频 Lab coat teacher with kids with goggles in lab picking up beaker pouring solution showing reaction lab coat teacher with kids with 股票视频
4K Diverse kids in lab teacher placing tablet african american boy adding it showing tube reaction testtube beaker reagent goggles 影视素材 Diverse kids in lab teacher placing tablet african american boy adding it showing tube reaction testtube beaker reagent goggles 影视素材
4K Woman teacher showing sign while boy watching and copying for practice with laptop in classroom woman teacher showing sign while 股票录像 Woman teacher showing sign while boy watching and copying for practice with laptop in classroom woman teacher showing sign while 股票录像
4K African teacher showing hand shapes guiding youth blond boy practicing signs in class on laptop african teacher showing hand 股票视频 African teacher showing hand shapes guiding youth blond boy practicing signs in class on laptop african teacher showing hand 股票视频
4K Teacher asking question african child raising right hand in classroom at desk showing readiness teacher asking question african 股票录像 Teacher asking question african child raising right hand in classroom at desk showing readiness teacher asking question african 股票录像
4K African american teacher lifting test tube showing blue liquid at bench as children raising hands african american teacher lifting 影视素材 African american teacher lifting test tube showing blue liquid at bench as children raising hands african american teacher lifting 影视素材
登录 
