fictitious math equations and geometry formulas on black background for education and science. 3d animation - 三角 個影片檔及 b 捲影像00:35數學符號
abstract math equations and geometry formulas on black background for education and science - 三角 個影片檔及 b 捲影像00:12數學符號
benjamin banneker: man of science - part 12 of 15. this excellent film shows how equal opportunity, not race, can determine achievement. benjamin banneker, a free black, attended school, excelling in science, math, and astronomy. he received an appointmen - 三角 個影片檔及 b 捲影像00:35
woodworker studies tablet computer as excited shop owner shows off contoured design on new skateboard - 三角 個影片檔及 b 捲影像00:18
praying man stands in front of a glowing book surrounded by questions and mathematical formulas - 三角 個影片檔及 b 捲影像00:10
man stands in front of a glowing light bulb surrounded by questions and mathematical formulas - 三角 個影片檔及 b 捲影像00:10
abstract math equations and geometry formulas on black background for education and science - 三角 個影片檔及 b 捲影像00:35
general views and close-ups of a triangulation station, also known as a trigonometrical point, which was used to create maps before digital technology - 三角 個影片檔及 b 捲影像00:12
experienced teacher using a large tv screen for teaching in adult education classroom - 三角 個影片檔及 b 捲影像00:13
senior educator using a large tv screen to explain trigonometry to adult students - 三角 個影片檔及 b 捲影像00:13數學符號
senior instructor demonstrating math concepts on a big screen in an adult learning class - 三角 個影片檔及 b 捲影像00:08
senior teacher explaining trigonometry using a large television in an adult education class - 三角 個影片檔及 b 捲影像00:08
mature male teacher using a large tv to teach trigonometry in a classroom for adult learner - 三角 個影片檔及 b 捲影像00:05白人