CK-12 Foundation
Ck 12: Biology: Mitosis and Cytokinesis
[Free Registration/Login may be required to access all resource tools.] A description of the stages of eukaryotic cell division.
CK-12 Foundation
Ck 12: Earth Science: Weather Fronts
[Free Registration/Login may be required to access all resource tools.] Describes the weather fronts that occur when two air masses collide. Includes downloadable handouts.
CK-12 Foundation
Ck 12: Gene Expression & Regulation: Regulation of Gene Expression Advanced
[Free Registration/Login may be required to access all resource tools.] Find out about the regulation of gene expression with the help of this article, video, and review questions.
CK-12 Foundation
Ck 12: Biotechnology and Medicine
[Free Registration/Login may be required to access all resource tools.] Informational text and video clips about biotechnology and medicine. After reading the text, review the key vocabulary terms and answer review questions.
CK-12 Foundation
Ck 12 Exploration Series: Simulations: Physics: Tether Ball
[Free Registration/Login Required] Learn about centripetal motion in the context of the game of tether-ball.
CK-12 Foundation
Ck 12 Exploration Series: Simulations: Physics: Loop the Loop
[Free Registration/Login Required] Learn about the centripetal motion in the context of a roller coaster going through a loop-the-loop and over a hill.
CK-12 Foundation
Ck 12 Exploration Series: Simulations: Physics: Ballistics Tests
[Free Registration/Login Required] Practice with the concepts of conservation of momentum and energy by analyzing a special case of the ballistic pendulum.
CK-12 Foundation
Ck 12: Simple Pendulum
[Free Registration/Login may be required to access all resource tools.] Students understand the mechanics of a simple pendulum, and solve problems involving a simple pendulum.
CK-12 Foundation
Ck 12: Thermochemical Equations
[Free Registration/Login may be required to access all resource tools.] Students investigate the conditions under which the enthalpy change in a reaction is equal to the heat absorbed or released. Then, they have the opportunity to write...
CK-12 Foundation
Ck 12: Cell Potentials
[Free Registration/Login may be required to access all resource tools.] Students will discover how an electrical potential is generated in an electrochemical cell, and then they will calculate the standard cell potentials from a table of...
CK-12 Foundation
Ck 12: Applications of Function Models
[Free Registration/Login may be required to access all resource tools.] A collection of resources for exploring word problems using function models.
CK-12 Foundation
Ck 12 Exploration Series: Simulations: Physics: Collisions
[Free Registration/Login Required] This sim explains the concept of elastic and inelastic collision using two bumper cars. A PDF worksheet and a video tutorial are also available. [3:40]
CK-12 Foundation
Ck 12 Exploration Series: Simulations: Physics: Crash Test Dummy
[Free Registration/Login Required] Learn about and explore the relationship between force, time, impulse, and momentum in collisions.
CK-12 Foundation
Ck 12: Food Chains and Food Webs
[Free Registration/Login may be required to access all resource tools.] Videos, texts, activities, and assessments about food chains and food webs in an ecosystem.
CK-12 Foundation
Ck 12: Flex Book Textbooks: Earth Science Concepts for Middle School
[Free Registration/Login may be required to access all resource tools.] A complete, web-based, multi-media textbook covering a wide variety of Earth science concepts for middle grades.
CK-12 Foundation
Ck 12: History of Chemistry
[Free Registration/Login may be required to access all resource tools.] Students learn about the history of chemistry through instructional videos, grade-level texts, and quick assessments.
CK-12 Foundation
Ck 12: Atoms
[Free Registration/Login may be required to access all resource tools.] Students learn about atoms and atomic structure in this collection of instructional videos, grade-level texts, and quick assessments.
CK-12 Foundation
Ck 12: Cell Biology
[Free Registration/Login may be required to access all resource tools.] Read grade-level texts, complete activities, and take assessments about cell biology.
CK-12 Foundation
Ck 12: Calculus: Volume by Cross Section
[Free Registration/Login may be required to access all resource tools.] This tutorial explains how to calculate the volume of various solids using the 'slicing' method and then deriving a formula for each solid. It goes on to discuss...
CK-12 Foundation
Ck 12: Laboratories Laboratories Advanced
[Free Registration/Login may be required to access all resource tools.] An overview of science laboratory procedures including information about lab equipment, lab safety, and general techniques. After the reading, watch a short video...
CK-12 Foundation
Ck 12: Probabilities of Compound Events
[Free Registration/Login may be required to access all resource tools.] A detailed explanation of how to use tree diagrams and tables to find the probability of compound events. Also looks at dependent events. Includes example problems...
CK-12 Foundation
Ck 12: Uniform Acceleration
[Free Registration/Login may be required to access all resource tools.] Students examine the difference between uniform acceleration and average acceleration, and preform calculations using uniform acceleration.
CK-12 Foundation
Ck 12: Wave Frequency and Amplitude
[Free Registration/Login may be required to access all resource tools.] Students explore frequency and amplitude in terms of wave characteristics, and learn how the frequency and period of a wave are related.
CK-12 Foundation
Ck 12: Heat Transfer
[Free Registration/Login may be required to access all resource tools.] Students explore the relationship between heat and energy transfer, and learn about the three ways that heat can be transferred between objects of different...