CK-12 Foundation
Ck 12: Elem Math: Identifying Semi Circles and Quarter Circles
[Free Registration/Login may be required to access all resource tools.] The video defines a semi-circle and a quarter-circle and answers a question determining which object is a semi-circle. The video is followed by a series of practice...
CK-12 Foundation
Ck 12: Elem Math: Count Rectangles, Square,s and Triangles in Composite Figures
[Free Registration/Login may be required to access all resource tools.] The video defines a composite shape and shows how to determine the total number of triangles in the given shape. The video is followed by practice problems to assess...
CK-12 Foundation
Ck 12: Elem Math: Counting Semi Circles and Quarter Circles in Composite Figures
[Free Registration/Login may be required to access all resource tools.] The video defines composite figures, semi-circles, and quarter circles, then uses those definitions to determine how many semi-circles and quarter circles are in the...
CK-12 Foundation
Ck 12: Elem Math: Line Lengths
[Free Registration/Login may be required to access all resource tools.] The video shows how to measure designated lengths on a ruler. The video is followed by a series of practice questions to assess student comprehension of the concept.
CK-12 Foundation
Ck 12: Elem Math: Writing Addition Sentences Sums to 10
[Free Registration/Login may be required to access all resource tools.] In this interactive media source, the video shows how to write a number sentence from counting groups of pencils, followed by practice problems to assess understanding.
CK-12 Foundation
Ck 12: Elem Math: Multiple Object Lengths
[Free Registration/Login may be required to access all resource tools.] The video shows how to use a ruler and count the length of different objects. The video is followed by a series of practice questions to assess student comprehension...
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: 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: 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: Completing the Addition Sentence Sums to 20
[Free Registration/Login may be required to access all resource tools.] The video shows how to count backwards to determine the missing number in an addition problem. The video is followed by practice problems to assess student...
CK-12 Foundation
Ck 12: Elem Math: Understanding Less Than and More Than
[Free Registration/Login may be required to access all resource tools.] The video describes what less than means mathematically by continually counting one less than the number provided in the example. The video is followed by a series...
CK-12 Foundation
Ck 12: Elem Math: One Step Subtraction Numbers to 100 Word Problems
[Free Registration/Login may be required to access all resource tools.] The video is a subtraction word problem that describes how to subtract using regrouping. The video is followed by a series of practice questions to assess student...
CK-12 Foundation
Ck 12: Elem Math: Subtracting 2 Digit Numbers Without Regrouping
[Free Registration/Login may be required to access all resource tools.] The video shows a subtraction problem with two digit numbers. The video is followed by a series of practice questions to assess student comprehension of the concept.
CK-12 Foundation
Ck 12: Elem Math: Counting Rectangle,s Squares, Circles, and Triangles in Sets
[Free Registration/Login may be required to access all resource tools.] The video displays a set of figures and reviews triangles by number of sides. Then all of the triangles out of the set of figures are chosen. The video is followed...
CK-12 Foundation
Ck 12: Elem Math: Subtracting by Crossing Out With Pictures
[Free Registration/Login may be required to access all resource tools.] In this interactive media source, the video defines a timeline and shows an example of how to read a timeline to answer questions, followed by practice problems to...
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: Completing the Subtraction Sentence Numbers to 100
[Free Registration/Login may be required to access all resource tools.] The video describes how to fill in a missing number in a 2-digit subtraction sentence. The video is followed by practice problems to assess student understanding of...
CK-12 Foundation
Ck 12: Elem Math: Pictures Comparing Length in Meters
[Free Registration/Login may be required to access all resource tools.] The video uses pictures to aide in comparing length in meters to answer a series of questions using the pictures and measurement lengths. The video is followed by a...
CK-12 Foundation
Ck 12: Elem Math: Measuring Length in Meters
[Free Registration/Login may be required to access all resource tools.] The video shows how to use a ruler to measure an object in meters. The video is followed by a series of practice questions to assess student comprehension of the...
CK-12 Foundation
Ck 12: Elem Math: Identifying Rectangles, Squares, Circles, and Triangles
[Free Registration/Login may be required to access all resource tools.] The video discusses a brief overview of circles, rectangles, squares, and triangles and helps students determine which shape is shown and why. The video is followed...
CK-12 Foundation
Ck 12: Elem Math: Multiple Object Length Comparison
[Free Registration/Login may be required to access all resource tools.] The video calculates length of different objects and then compares the various lengths. The video is followed by a series of practice questions to assess student...