sideview of�school children�sitting in�a�row�on desks�under�selective focus�as they take�a test�in�the�classroom�while the supervisor is�walking�in�the�background�

secondary or high school students studying wind turbines in science class with teacher in background

female student raising hand to ask question in classroom

kids go back to school. interracial group of children of mixed age on the first day of new academic year. teenager in classroom. high and middle school students walk to lesson. secondary student class

portrait of male secondary or high school student outside school building with teachers and pupils

teen students are working together and taking notes in lesson time at school. 

sideview of students sitting in a row with selective focus taking a test in an exam hall with a supervisor standing in the background

schoolyard with basketball court and school building exterior in the sunny evening. school yard with playground

happy african american professor receives applause from her students while lecturing them in the classroom.

students listening to female teacher in classroom

teenage students wearing uniform studying in it class

辅助衬托元素点缀五边形素材3D

free range eggs isolated cartoon vector illustrations. farmer on field, chicken and eggs, agriculture industry, agribusiness idea, secondary product production sector vector cartoon.

辅助衬托元素点缀六边形素材3D

male teacher is teaching a group of teenagers in a high school lesson.

teen student is working with her teacher on the computer during her lesson. they are talking and laughing. 

happy teacher with pupils group giving thumbs up. toothy smiling tutor with elementary or secondary school student looking at camera portrait. schoolroom interior. offline education acknowledgment

female teacher helping pupil using computer in classroom

portrait showing class of secondary or high school pupils standing outside school building

teenager student class and young teacher sharing group discussion at high school - education mentalhealth support

辅助衬托元素点缀四边形素材3D

secondary succession as ecological recovery after wildfire outline diagram. labeled educational years timeline with pioneer, intermediate species and climax community after event vector illustration.

happy college student during a lecture in the classroom looking at camera.

teen students are working on a laptop in their school lesson. a teacher is leaning over them, helping them with some work. 

辅助衬托元素点缀三角形素材3D

portrait of multi-cultural secondary or high school students hugging outdoors

happy female student showing test results to her friends while standing in a lobby. 

sideview of students sitting in row with selective focus taking a test in the classroom while the supervisor is standing in background

focused asian school boy using digital tablet at class in classroom. attentive junior school student learning online virtual education digital program app tech during stem computer science lesson.

portrait of smiling girl solving math equation on white board. college student thinking and solving arithmetic sum with classmates. smart young woman writing on white board during class.

color wheel isolated on white background. color theory. understanding colors. primary secondary tertiary colors

group of students building and programming electric toys and robots at robotics classroom

group of teenage students studying together in art class

male teacher helping teenage pupils in art class

african american teenage boy using computer and doing lessons at home. e-learning, home schooling and education concept.

happy mature man attending educational seminar and looking at camera.

landscape of the city of port-vendres. mediterranean city. mediterranean city. eastern pyrenees city. seaside town.

student guy wear glasses studying in library or classroom, using laptop working on essay, prepare for college exams seated at table with diverse group mates. education, professionals skills concept

african american female teenager student working on electronics robotics in the technology course

back to school vector design. back to school text in chalkboard element with light bulb and pen educational elements. vector illustration back to school concept.

portrait of multi-cultural secondary or high school students sitting on wall outdoors at school

safety do's and dont's. unsafe work condition. the chemical material without drip pan or secondary containment for spill prevention. flat vector illustration template.

multiracial boy and girl students at technical high school using a tablet in technology class. classmates collaborating on a secondary school project: programming electric robots in laboratory.

collection of complementary colour combinations for logos or other designs. two colour combinations set.

female teacher helping high school students in classroom lesson

group of teenage girls are walking down the school hall with books and laptops in their arms. they are talking and laughing as they walk and there is a female teacher using the printer.

students using laptop, digital tablet in library

the picture shows the principle of elisa technique: the primary antibody and secondary antibody with labeling chemistry were binding the target antigen.

back view of student raising her hand to answer teacher's question during education training class. 

group of happy young friends sitting in college campus and talking. cheerful group of  smiling girls and guys feeling relaxed after university exam. excited millenials laughing and having fun outdoor.

female high school students using bunsen burner in science class

female pupil wearing uniform using laptop in classroom

young african american woman using laptop while studying at university classroom.

vector illustration of color wheel or color circle isolated on white background. primary colors – ryb, red, yellow, blue, secondary colors – orange, purple, green, tertiary colors. color combinations.

teen student girl standing in library holds smartphone look at camera, use school application, new mobile app, enjoy educational services. studies, education, modern tech, igeneration person portrait

secondary student being helped by professor during class. mature man lecturer helping young woman during class test. high school girl in a lecture asking for explanations to helpful teacher. 

group of students are walking down the school corridor together wearing uniform.

happy diverse junior school students children group looking at camera standing in classroom. smiling multiethnic cool kids boys and girls friends posing for group portrait together.

serious students in computer class sitting in a row�learning and working on desktop computers�

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