CK-12 Foundation
Ck 12: Transverse Waves
[Free Registration/Login may be required to access all resource tools.] Explore the characteristics and behaviors of energy transferred by transverse waves.
CK-12 Foundation
Ck 12: Longitudinal Waves
[Free Registration/Login may be required to access all resource tools.] Students can use this module to find out what a longitudinal wave is and how it differs from a transverse wave.
CK-12 Foundation
Ck 12: Rocks and Processes of the Rock Cycle
[Free Registration/Login may be required to access all resource tools.] Instructional videos, grade-level texts, interactive activities, and quick assessments about rocks and processes of the rock cycle.
CK-12 Foundation
Ck 12: Evaluate Limits Using Substitution
Finding limits for the vast majority of points for a given function is as simple as substituting the number that x approaches into the function.
CK-12 Foundation
Ck 12: Algebra: Numerical Expression Evaluation
[Free Registration/Login may be required to access all resource tools.] In this lesson students use given values to evaluate variable expressions. Students examine guided notes, review guided practice, watch instructional videos and...
CK-12 Foundation
Ck 12: Elem Math: Subtracting With Grouped Pictures
[Free Registration/Login may be required to access all resource tools.] The video shows how to use a model and group numbers according to a subtraction problem and count the ungrouped numbers as the solution. The video is followed by a...
CK-12 Foundation
Ck 12: Elem Math: Identifying Incorrect Subtraction
[Free Registration/Login may be required to access all resource tools.] This video describes how to find the subtraction problem that does not fit for the solution given in the question. The video is followed by a series of practice...
CK-12 Foundation
Ck 12: Elem Math: Completing the Subtraction Sentence
[Free Registration/Login may be required to access all resource tools.] The video shows how to use a model to determine the missing number in a subtraction problem. The video is followed by practice problems to assess student...
CK-12 Foundation
Ck 12: Elem Math: Adding Three 2 Digit Numbers
[Free Registration/Login may be required to access all resource tools.] The video shows how to add 3, two-digit numbers followed by additional practice problems.
CK-12 Foundation
Ck 12: Elem Math: Overview of Subtraction Numbers to 100
[Free Registration/Login may be required to access all resource tools.] The video explains two, two-digit subtraction problems one with regrouping and the other without regrouping.
CK-12 Foundation
Ck 12: Elem Math: Selecting the Incorrect Subtraction Sentence
[Free Registration/Login may be required to access all resource tools.] The video shows how to solve various multi-digit subtraction problems to determine which problem has a difference that doesn't match the given value. The video is...
CK-12 Foundation
Ck 12: Elem Math: Write in Numbers
[Free Registration/Login may be required to access all resource tools.] In this interactive media source, the video shows students how to look at a clock and write the time using digits, followed by practice problems to assess...
CK-12 Foundation
Ck 12: Elem Math: How Big Is a Meter
[Free Registration/Login may be required to access all resource tools.] The video compares objects to one meter and gives the height of an 8 year old child as a reference for the length of one meter. From there, students have to...
CK-12 Foundation
Ck 12: Elem Math: Classifying Real Life Objects as Basic 2 D Shapes
[Free Registration/Login may be required to access all resource tools.] The video describes how to classify a real-world object as a circle, triangle, square or rectangle. The video is followed by additional practice problems.
CK-12 Foundation
Ck 12: Elem Math: Fraction of a Whole
[Free Registration/Login may be required to access all resource tools.] The video determines the fraction of a shape that is shaded and describes how to write the fraction. The video is followed by a series of practice questions to...
CK-12 Foundation
Ck 12: Elem Math: Evaluating Fractions Word Problems
[Free Registration/Login may be required to access all resource tools.] The video shows steps to determining fractions from a word problem. The video is followed by additional problems for students to practice the skills discussed in the...
CK-12 Foundation
Ck 12: Elem Math: Adding Two Numbers Sums to 20 Word Problems
[Free Registration/Login may be required to access all resource tools.] The video describes how to solve an addition word problem with a sum up to 20. The video is followed by additional practice problems.
CK-12 Foundation
Ck 12: Elem Math: Subtracting by Counting Backward With Pictures
[Free Registration/Login may be required to access all resource tools.] The video shows how to solve a subtraction problem using a model and counting back from a given value, then writes the subtraction problem using numbers. The video...
CK-12 Foundation
Ck 12: Elem Math: Adding Pictures Sums to 20
[Free Registration/Login may be required to access all resource tools.] The video utilizes a picture model to describe how to add sums up to 20. The video is followed by additional practice problems.
CK-12 Foundation
Ck 12: Elem Math: Adding With Pictures Word Problems Sums to 20
[Free Registration/Login may be required to access all resource tools.] The video uses the picture and describes how to add two numbers with a sum less than 20. The video is followed by additional practice problems.
CK-12 Foundation
Ck 12: Elem Math: Adding Multiple One Digit Numbers With Pictures
[Free Registration/Login may be required to access all resource tools.] The video shows how to find the sum of 3, 1-digit numbers. A picture to model the problem is displayed in the video. Following the video is additional practice...
CK-12 Foundation
Ck 12: Elem Math: Subtract by Counting Backward With Pictures Numbers Up to 20
[Free Registration/Login may be required to access all resource tools.] The video uses pictures to aide in counting back to solve subtraction. The video is followed by additional problems for students to practice the skills discussed in...
CK-12 Foundation
Ck 12: Elem Math: Understanding More Than
[Free Registration/Login may be required to access all resource tools.] The video describes what more than means mathematically by continually counting one more than the number provided in the example. The video is followed by a series...
CK-12 Foundation
Ck 12: Elem Math: Selecting the Correct Addition Sentence
[Free Registration/Login may be required to access all resource tools.] This video describes how to find the addition problem that does fit for the solution given in the question. The video is followed by a series of practice questions...