Let’s explore the meaning and origin of the word “perceive”. Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now! https://www.khanacademy.org/ela/new-6th-grade-reading-and-vocabulary/x8ddea1200317e822:what-defines-us/x8ddea1200317e822:determining-author-s-purpose/v/perceive-vocabulary-623b Khan Academy is a nonprofit organization with the mission of providing a free, world-class education for anyone, anywhere. We offer quizzes, questions, instructional videos, and articles on a range of academic subjects, including math, biology, chemistry, physics, history, economics, finance, grammar, preschool learning, and more. We provide teachers with tools and data so they can help their students develop the skills, habits, and mindsets for success in school and beyond. Khan Academy has been translated into dozens of languages, and 15 million people around the globe learn on Khan Academy every month. As a 501(c)(3) nonprofit organization, we would love your help! Donate or volunteer today! Donate here: https://www.khanacademy.org/donate?utm_source=youtube&utm_medium=desc Volunteer here: https://www.khanacademy.org/contribute?utm_source=youtube&utm_medium=desc ... https://www.youtube.com/watch?v=NiaCGBX9Zig Note: All Khan Academy content is available for free at (www.khanacademy.org)

See Khanmigo in action - then try it out for yourself: http://khan.co/try-khanmigo ... https://www.youtube.com/watch?v=VLEe0kT11UU Note: All Khan Academy content is available for free at (www.khanacademy.org)

Learn how to compare the following expressions by thinking about multiplication as scaling: 2/3 x 7/8, 8/7 x 2/3, and (5x2)/(3x5) Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/multiplying-fractions-pre-alg/e/fraction-multiplication-as-scaling?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Watch the next lesson: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/mult-fracs-word-probs-pre-alg/v/multiplying-fractions-word-problem-2?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Missed the previous lesson? https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/multiplying-fractions-pre-alg/v/multiplying-negative-and-positive-fractions?utm_source=YT&utm_medium=Desc&utm_campaign=PreAlgebra Pre-Algebra on Khan Academy: No way, this isn't your run of the mill arithmetic. This is Pre-algebra. You're about to play with the professionals. Think of pre-algebra as a runway. You're the airplane and algebra is your sunny vacation destination. Without the runway you're not going anywhere. Seriously, the foundation for all higher mathematics is laid with many of the concepts that we will introduce to you here: negative numbers, absolute value, factors, multiples, decimals, and fractions to name a few. So buckle up and move your seat into the upright position. We're about to take off! ... https://www.youtube.com/watch?v=yUYDhmQsiXY Note: All Khan Academy content is available for free at (www.khanacademy.org)

... https://www.youtube.com/watch?v=WDWV8aBgBAg Note: All Khan Academy content is available for free at (www.khanacademy.org)