CK-12 Foundation
Ck 12: Biology: Invertebrate Evolution
[Free Registration/Login may be required to access all resource tools.] An overview of the major events in invertebrate evolution.
CK-12 Foundation
Ck 12: Biology: Kidneys
[Free Registration/Login may be required to access all resource tools.] Describes the roles of the kidneys in homeostasis.
CK-12 Foundation
Ck 12: Biology: Krebs Cycle
[Free Registration/Login may be required to access all resource tools.] Describes the Krebs cycle.
CK-12 Foundation
Ck 12: Biology: Large Intestine
[Free Registration/Login may be required to access all resource tools.] Covers the functions of the large intestine.
CK-12 Foundation
Ck 12: Biology: Leaves
[Free Registration/Login may be required to access all resource tools.] Discusses different types of leaves and seasonal changes in leaves.
CK-12 Foundation
Ck 12: Biology: Life Cycle of Seedless Vascular Plants
[Free Registration/Login may be required to access all resource tools.] Describes the life cycle of seedless vascular plants.
CK-12 Foundation
Ck 12: Biology: Lipids
[Free Registration/Login may be required to access all resource tools.] Discusses the structure and role of lipids.
CK-12 Foundation
Ck 12: Biology: Lipids
[Free Registration/Login may be required to access all resource tools.] Covers the structure and functions of lipids.
CK-12 Foundation
Ck 12: Biology: Mammal Ancestors
[Free Registration/Login may be required to access all resource tools.] Discusses therapsid ancestors of mammals.
CK-12 Foundation
Ck 12: Algebra: Addition and Subtraction of Rational Expressions
[Free Registration/Login may be required to access all resource tools.] Learn how to add and subtract rational expressions.
CK-12 Foundation
Ck 12: Algebra: Addition and Subtraction of Rational Expressions
[Free Registration/Login may be required to access all resource tools.] Add and subtract rational expressions with the same denominator and different denominators.
CK-12 Foundation
Ck 12: Algebra: Expressions With Radicals
[Free Registration/Login may be required to access all resource tools.] Simplify radicals.
CK-12 Foundation
Ck 12: Geometry: 30 60 90 Right Triangles
[Free Registration/Login may be required to access all resource tools.] Apply the special properties of 30-60-90 right triangles.
CK-12 Foundation
Ck 12: Geometry: 45 45 90 Right Triangles
[Free Registration/Login may be required to access all resource tools.] Apply the special properties of 45-45-90 right triangles.
CK-12 Foundation
Ck 12: Geometry: Alternate Exterior Angles
[Free Registration/Login may be required to access all resource tools.] Use alternate exterior angles to determine congruency and the presence of parallel lines.
CK-12 Foundation
Ck 12: Geometry: Alternate Interior Angles
[Free Registration/Login may be required to access all resource tools.] Use alternate interior angles to determine angle congruency and the presence of parallel lines.
CK-12 Foundation
Ck 12: Geometry: Angle Bisectors in Triangles
[Free Registration/Login may be required to access all resource tools.] Apply angle bisector properties.
CK-12 Foundation
Ck 12: Geometry: Area and Perimeter of Trapezoids
[Free Registration/Login may be required to access all resource tools.] In this lesson students calculate the area and perimeter of a trapezoid. Students examine guided notes, review guided practice, watch instructional videos and...
CK-12 Foundation
Ck 12: Geometry: Circumference
[Free Registration/Login may be required to access all resource tools.] In this lesson students calculate a circle's circumference. Students examine guided notes, review guided practice, watch instructional videos and attempt practice...
CK-12 Foundation
Ck 12: Geometry: Composite Solids
[Free Registration/Login may be required to access all resource tools.] In this lesson students find a composite solid's volume and surface area. Students examine guided notes, review guided practice, watch instructional videos and...
CK-12 Foundation
Ck 12: Geometry: Deductive Reasoning
[Free Registration/Login may be required to access all resource tools.] In this lesson students use deductive reasoning to solve problems. Students examine guided notes, review guided practice, watch instructional videos and attempt...
CK-12 Foundation
Ck 12: Geometry: Equilateral Triangles
[Free Registration/Login may be required to access all resource tools.] In this lesson students apply the properties of equilateral triangles. Students examine guided notes, review guided practice, watch instructional videos and attempt...
CK-12 Foundation
Ck 12: Geometry: Hl Triangle Congruence
[Free Registration/Login may be required to access all resource tools.] In this lesson students prove two right triangles are congruent with the Hypotenuse-Leg shortcut. Students examine guided notes, review guided practice, watch...
CK-12 Foundation
Ck 12: Geometry: Inductive Reasoning From Patterns
[Free Registration/Login may be required to access all resource tools.] Use inductive reasoning to solve problems.