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Happy teacher explaining mathematics at whiteboard in classroom. Portrait of smiling mathematics tutor explaining addition concept to children in classroom. Successful teacher standing in front of whiteboard with crossed arms after explaining addition to students.
Kyiv, Ukraine - March 14, 2011: Start web page of Wikipedia in browser window with Wikipedia internet address. Wikipedia is a free encyclopedia that anyone can edit. Wikipedia is a multilingual, web-based, free-content encyclopedia project based on an openly editable model.The one of the biggest encyclopedia in the internet.
A woman writes with a pen in a notebook in a cage. The hand writes numbers in a notebook. Learning to write. A math lesson at school. The population census. The concept. A business plan.
Der König
Flicking Through Old Book Page Numbers Close-up
Florence, Italy - March 9, 2011: Close up of the wikipedia.org site it is a free, web-based, collaborative, multilingual encyclopedia project supported by the non-profit Wikimedia Foundation. Its 17 million articles (over 3.5 million in English) have been written collaboratively by volunteers around the world, and almost all of its articles can be edited by anyone with access to the site
Photo taken in Garmisch-Partenkirchen, Germany
Random math symbols and digits on metal surface. Diminishing perspective.
Mom, girl and wake up for homework with sleeping, tired or burnout with math project for education in apartment. People, mother and daughter with care for books, calculator or fatigue in family house
Christmas. Happy young couple in love in red hats and sweaters drink hot tea from thermos near Christmas trees.
Vintage craft paper texture: Grunge vignette of old Newspaper. Abstract art background design with copy space for text. White smooth paper texture pattern, Torn page sheet with recycled material.
Multiplication math  flash card close-up
Detail of an Italian calendar
Heidelberg skyline aerial view from above
The voting result is determined from the ballot papers that are opened for counting
Two black men wearing casual clothing sit on camping chairs and fish together on a warm and sunny afternoon at the river.
Close up number on calendar page
Young women walk home from yoga class together through city park, skyline and harbour in distance
Girl laying out numbers on cardboard with her hands. Math lesson, vertical photo.
Aerial view of grassland in Zoige (Ruoergai) county, Ngawa (Aba) Tibetan and Qiang Autonomous Prefecture, Sichuan province, China
from the inflight information screen flying into Hawaii
Little cute preschool girl with candy cane from a sweets stand on Christmas market. Happy child on traditional family market in Germany. Preschooler in colorful winter clothes during snowfall.
A closeup of vibrant green grass in rich dark soil, symbolizing natures ongoing renewal and vitality
Woman suffering from neck pain in the car
Old elementary school math flash cards on a black background reflected on glass. 1 +2 = 3
The green man looks out from the queue. Stand out from the gray mass. Initiative and talent. Volunteer for work. Show yourself. Take the first step towards. Job search and hiring. Unique and special
Würzburg, Germany - May 17, 2017: view from würzburg castle to river Main and old town of Wuerzburg, Bavaria, Germany
From a mineral collection, Adamin
white and light grey digits on dark grey background
Smoking Hills, Fog Rising from Forest at dawn
Free Images: "bestof:Houghton Math 837.97 - Logarithmisch-trigonometrische, title.jpg en Title page from Logarithmisch-trigonometrische Tafeln nebst andern zum gebrauch der"
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Naturalis Biodiversity Center - RMNH.AVES.67057 2 - Hypothymis azurea javana Chasen and Kloss, 1929 - Monarchidae - bird skin specimen.jpeg
Naturalis Biodiversity Center - RMNH.AVES.67057 1 - Hypothymis azurea javana Chasen and Kloss, 1929 - Monarchidae - bird skin specimen.jpeg
Naturalis Biodiversity Center - RMNH.AVES.67803 1 - Sturnus vulgaris vulgaris Linnaeus, 1758 - Sturnidae - bird skin specimen.jpeg.jpg
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Naturalis Biodiversity Center - RMNH.AVES.15280 1 - Platysmurus leucopterus leucopterus (Temminck, 1824) - Corvidae - bird skin specimen.jpeg
Naturalis Biodiversity Center - RMNH.AVES.15280 2 - Platysmurus leucopterus leucopterus (Temminck, 1824) - Corvidae - bird skin specimen.jpeg
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Naturalis Biodiversity Center - RMNH.AVES.151050 2 - Aethopyga mystacalis mystacalis (Temminck, 1822) - Nectariniidae - bird skin specimen.jpeg
Naturalis Biodiversity Center - RMNH.AVES.140961 1 - Corvus corone corone Linnaeus, 1758 - Corvidae - bird skin specimen.jpeg
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