CK12-Foundation offers free online courses in science, math, social studies, photography and adult education. You can browse, study and practice thousands of questions and …FlexBook Platform®, FlexBook®, FlexLet® and FlexCard™ are registered trademarks of CK-12 Foundation.CK-12 is an app to help students, and teachers improve K-12 learning globally by providing self-pace learning content & tools.Grade K–5 Science FlexBooks. ®. CK-12 Kindergarten Science. CK-12 First Grade Science. CK-12 Second Grade Science. CK-12 Third Grade Science. CK-12 Fourth Grade Science. CK-12 Fifth Grade Science. CK-12 Foundation offers free math worksheets for Pre-Algebra, Algebra 1, and Algebra 2, as well as other topics such as functions, inequalities, and graphs. You can also access …Sep 28, 2565 BE ... Does your school use Google Classroom? Did you know that CK-12 works seamlessly with Google Classroom? Join the CK-12 team to learn more ...Jan 10, 2566 BE ... homework help, studying, and answering curiosity questions. Try it for yourself, and encourage your students to use Flexi at ck12.org/flexi.Systemic Circulation. Systemic circulation is the part of the circulatory system that carries blood between the heart and body. It is illustrated in Figure below. Oxygenated blood leaves the left ventricle through the aorta. The aorta and other arteries transport the blood throughout the body, where it gives up oxygen and picks up carbon dioxide.FlexBook Platform®, FlexBook®, FlexLet® and FlexCard™ are registered trademarks of CK-12 Foundation.Dec 5, 2566 BE ... CK-12 Interactive Physics for High School FlexBook® covers core physics concepts and includes SIMs, PLIX, real world examples, videos, ...By CK-12 | Last Modified: Aug 21, 2023 Published CK-12's College Human Biology FlexBook® covers cell biology, genetics, evolution, physiology, disease, nutrition, and ecology.Trigonometry. PLIX - Play, Learn, Interact and Xplore a concept with PLIX. Trigonometry is primarily the study of the relationships between triangle sides and angles. These concepts are also extended into angles defined by a unit circle, and into applications of angle analysis.Calculating Wave Speed from Wavelength and Wave Frequency. The equation for wave speed can be used to calculate the speed of a wave when both wavelength and wave frequency are known. Consider an ocean wave with a wavelength of 3 meters and a frequency of 1 hertz. The speed of the wave is: Speed = 3 m x 1 wave/s = 3 …The organs are those of the digestive system. The processes are digestion and absorption. The digestive system is the body system that breaks down food and absorbs nutrients. It also gets rid of solid food waste. The digestive system is mainly one long tube from the mouth to the anus, known as the gastrointestinal tract (GI tract).EPISD 2019-2020 Economics with Emphasis on the Free Enterprise System. El Paso Independent School District in El Paso Texas created this Economics text for its high school course using OER, CC, and public domain content from a variety of sources by educators in the district. The course is aligned to the Texas TEKS and is usually taken in Grade 11.The Next Generation Science Standards (NGSS) is a nationwide effort to evolve a framework of rigorous K-12 cross-disciplinary standards for students learning science. We can help you find CK-12 content that is aligned to these standards and make it available to these classes. Use our Next Generation Science Standards Browser to see concepts ...Feb 6, 2567 BE ... CK-12 Life Science for Middle School FlexBook® covers core life science concepts and includes PLIX, real world examples, and videos.According to the Big Bang theory, the universe began about 13.7 billion years ago. Everything that is now in the universe was squeezed into a very small volume. Imagine all of the known universe in a single, hot, chaotic mass. An enormous explosion — a big bang — caused the universe to start expanding rapidly.STANDARDS. Electromagnetic Spectrum, Wavelength and Frequency Calculations, Quantization of Energy, Atomic Emission Spectra, Bohr's Atomic Model, Spectral Lines of Hydrogen. WORKSHEET. Discover a new way of …FlexBook Platform®, FlexBook®, FlexLet® and FlexCard™ are registered trademarks of CK-12 Foundation.method of asexual reproduction that occurs in prokaryotic cells in which a parent cell divides into two identical daughter cells. referring to the total number of chromosomes in a species; having two sets of chromosomes. union of two gametes that produces a diploid zygote. having only one chromosome of each type; gametes are haploid.Exponential and Logarithmic Functions. Polar Equations and Complex Numbers. Vector Analysis. Conic Sections. Sequences, Series, and Mathematical Induction. Introduction to Calculus. High School Math Analysis is a study of algebraic and trigonometric applications of mathematics. Foster critical thinking skills with practice problems, video hints, and full step-by-step solutions, all clearly aligned with Common Core standards.Describes how the organization of living things includes cells, tissues, and organs, and how they correspond with their environment above the individual organism. CK-12 Content Community Content. All Levels. VIEW ALL.Photosynthesis is an important life process that provides more than 99% of the energy used by living things on Earth. Photosynthesis is composed of two main processes: the light reactions and the Calvin cycle. In the light reactions, pigment molecules, which give leaves their green color, drive ATP and NADPH production when excited by photons.Calculus is the branch of mathematics that extends the application of algebra and geometry to the infinite. Calculus enables a deep investigation of the continuous change that typifies real-world behavior. With calculus, we find functions for the slopes of curves that are not straight. We also find the area and volume of curved figures beyond the scope of basic …Comparative anatomy is the study of the similarities and differences in the structures of different species. Similar body parts may be homologies or analogies. Both provide evidence for evolution. Homologous structures are structures that are similar in related organisms because they were inherited from a common ancestor.Nov 27, 2566 BE ... CK-12 Physical Science for Middle School FlexBook® covers core physical science concepts and includes SIMs, PLIX, real world examples, ...CKHUF: Get the latest CK Hutchison Holdings stock price and detailed information including CKHUF news, historical charts and realtime prices. Indices Commodities Currencies StocksPLIX - Play, Learn, Interact and Xplore a concept with PLIX. Expand All. Visualizing Data. Planning and Conducting a Study. Analyzing Data and Distributions. Statistical Inference. The study of statistics involves the collection, organization, analysis, and presentation of data and numbers.When stating that two triangles are congruent, use a congruence statement. The order of the letters is very important, as corresponding parts must be written in the same order. Notice that the congruent sides also line up within the congruence statement. A B ¯ ≅ L M ¯, B C ¯ ≅ M N ¯, A C ¯ ≅ L N ¯. We can also write this congruence ...FlexBook Platform®, FlexBook®, FlexLet® and FlexCard™ are registered trademarks of CK-12 Foundation. Pollination is the fertilization step in the sexual reproduction of plants. Pollen consists of tiny grains that are the male gametes of plants. They are produced by a male flower part called the anther (see the Figure below ). Pollination occurs when pollen is transferred from the anther to the stigma of the same or another flower.Sep 28, 2565 BE ... Does your school use Google Classroom? Did you know that CK-12 works seamlessly with Google Classroom? Join the CK-12 team to learn more ...Assessments. You can create your own quizzes, or use those that already exist on the site. Existing practices can be found in our Adaptive Practice library. They are also embedded in most lessons in our FlexBook 2.0 platform. Note that not all subjects have assessments. You can customize practices and quizzes, and create your own questions. Study Guides - A quick way to review concepts. Algebra is the branch of mathematics that uses letters or symbols to represent unknown numbers and values, often to show that certain relationships between numbers are true for all numbers in a specified set. High School Algebra commonly includes the study of graphs and functions, and finding the ... We would like to show you a description here but the site won’t allow us. We believe every child should have equal access to great education. We provide free technology to educators and students. 200 million served worldwide.We would like to show you a description here but the site won’t allow us. Become CK-12 Certified. Webinars. Live and archived sessions to learn about CK-12. Other Resources; CK-12 Resources; Concept Map; Testimonials; CK-12 Mission; Meet the Team; Save Time. Teach more! The CK-12 Foundation is a leading non-profit organization dedicated to increasing access to high-quality K-12 STEM Open Educational Resources …By CK-12 | Last Modified: Dec 01, 2023 Published An introduction to theoretical probability and data organization, students will learn about events, conditions, random variables, and graphs and tables that allow them to manage data.Nov 4, 2564 BE ... CK-12 continues to make exciting changes to our platform. Whether you are brand new to CK-12 or one of our power users, this webinar is for ...Air pollution can cause precipitation to become acidic. Nitrogen and sulfur oxides, mainly from motor vehicle exhaust and coal burning, create acids when they combine with water in the air. The acids lower the pH of precipitation, forming acid rain. If acid rain falls on the ground, it may damage soil and soil organisms.The organs are those of the digestive system. The processes are digestion and absorption. The digestive system is the body system that breaks down food and absorbs nutrients. It also gets rid of solid food waste. The digestive system is mainly one long tube from the mouth to the anus, known as the gastrointestinal tract (GI tract).Starting to forget what you learned this year? We're here to help! Catch up on math and science classes with CK-12's FlexLets™, designed to make sure that ...We have previously described a 12-chemokine (12-CK) transcriptional score which recapitulates an overwhelming enrichment for immune-related and inflammation-related genes in colorectal carcinoma. Subsequently, the 12-CK score was found to prognosticate favorable survival in multiple tumors types including melanoma, breast …Grade K–5 Science FlexBooks. ®. CK-12 Kindergarten Science. CK-12 First Grade Science. CK-12 Second Grade Science. CK-12 Third Grade Science. CK-12 Fourth Grade Science. CK-12 Fifth Grade Science. CK-12 Earth Science for Middle School. By CK-12 | Last Modified: Nov 27, 2023. Published. CK-12 Earth Science for Middle School FlexBook® covers core earth science concepts and includes PLIX, real world examples, videos, and study guides. Standards Alignment:Lesson Objectives. Define gene and allele. Describe the relationship between genotype and phenotype. Show how to predict genotype and phenotype ratios in offspring for simple traits.The CK-12 Foundation is a California-based non-profit organization which aims to increase access to low-cost K-12 education in the United States and abroad. CK-12 provides free and customizable K-12 open educational resources aligned to state curriculum standards. As of 2022, the foundation's tools were used by over 200,000,000 students worldwide.CK-12 Calculus. Difficulty Level: At Grade | Created by: CK-12. Last Modified: Jul 22, 2020. Read Resources Details. Table of Contents. Teachers and parents can access additional teaching materials from the Resources Tab above. 1.0 Functions, Limits, and Continuity. 2.0 Derivatives.Air pollution can cause precipitation to become acidic. Nitrogen and sulfur oxides, mainly from motor vehicle exhaust and coal burning, create acids when they combine with water in the air. The acids lower the pH of precipitation, forming acid rain. If acid rain falls on the ground, it may damage soil and soil organisms.Welcome to CK-12 Foundation | CK-12 Foundation. Home Science Biology FlexBooks CK-12 Biology Ch3 1. Introduction to Cells. Add to Library. Share with Classes.Sep 28, 2565 BE ... Does your school use Google Classroom? Did you know that CK-12 works seamlessly with Google Classroom? Join the CK-12 team to learn more ...The transfer of energy by electromagnetic waves is called electromagnetic radiation. The electric and magnetic fields of an electromagnetic wave are areas of electric or magnetic force. The fields can exert force over objects at a distance. An electromagnetic wave begins when an electrically charged particle vibrates.Problems on CK-12 will match your level and difficulty will gradually increase or decrease depending on your performance. Thoughtful recommendations If you struggle with a particular concept, we'll recommend helpful resources like readings and videos. Term. Definition. carbon cycle. biogeochemical cycle through which carbon is recycled through the atmosphere, biosphere, and geosphere. photosynthesis. process in which cells use carbon dioxide, water, and light energy to make oxygen and glucose, an energy-storing sugar.FlexBook Platform®, FlexBook®, FlexLet® and FlexCard™ are registered trademarks of CK-12 Foundation.. Geometry is the branch of mathematics that explores thRefraction ... Refraction of light in mat We're all guilty. Every day from the moment we wake up, we live our lives caring what other people think of us. We're all guilty. Every day from the moment we wake up, we live our ... Welcome to CK-12 Foundation | CK-12 Foundation. Home Science Biolo Magnetism. Electromagnetism. Physical science is the study of matter and energy. Physical science can be divided into chemistry and physics. Chemistry is the study of matter and energy at the scale of atoms and molecules. Physics is the study of matter and energy at all scales—from the tiniest particles of matter to the entire universe. 5 days ago ... This is a complete, full-...
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