CK-12 Foundation
Ck 12: Elem Math: Adding Two Digit Numbers Without Regrouping
[Free Registration/Login may be required to access all resource tools.] The video describes how to solve a 2-digit addition problem without regrouping. The video is followed by practice problems.
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 three, two-digit numbers. The video is followed by practice problems covering the topics in the video.
CK-12 Foundation
Ck 12: Elem Math: Selecting the Correct Addition Sentence Sums to 100
[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...
CK-12 Foundation
Ck 12: Elem Math: Selecting the Incorrect Addition Sentence Sums to 100
[Free Registration/Login may be required to access all resource tools.] This video describes how to find the addition 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: Selecting the Incorrect Subtraction Sentence
[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: Subtraction 3 Digits Minus 2 Digits
[Free Registration/Login may be required to access all resource tools.] The video describes how to use regrouping when subtraction a two-digit number from a three-digit number. The video is followed by additional problems for students to...
CK-12 Foundation
Ck 12: Elem Math: Multiplication Sentences Ii: Numbers 2, 3, 4, 5, and 10
[Free Registration/Login may be required to access all resource tools.] The video shows how to use a multiplication symbol of (x) to write a multiplication sentence and solve. The video is followed by a series of practice questions to...
CK-12 Foundation
Ck 12: Elem Math: Multiplying by 2
[Free Registration/Login may be required to access all resource tools.] The PLIX interactive media allows students to manipulate straws into glasses to understand the concept of multiplying by twos, followed by a video that connects...
CK-12 Foundation
Ck 12: Elem Math: Multiplying by 4
[Free Registration/Login may be required to access all resource tools.] The video explains the connection from multiplication to repeated addition with multiplying by four. The video is followed by a series of practice questions to...
CK-12 Foundation
Ck 12: Elem Math: Multiplying by 10
[Free Registration/Login may be required to access all resource tools.] The video connects multiplication to repeated addition with multiplying by 10. The video is followed by a series of practice questions to assess student...
CK-12 Foundation
Ck 12: Elem Math: Multiplying by 7
[Free Registration/Login may be required to access all resource tools.] The video explains the connection from multiplication to repeated addition with multiplying by seven. The video is followed by a series of practice questions to...
CK-12 Foundation
Ck 12: Elem Math: Multiplying by 8
[Free Registration/Login may be required to access all resource tools.] The video explains the connection from multiplication to repeated addition with multiplying by eight. The video is followed by a series of practice questions to...
CK-12 Foundation
Ck 12: Elem Math: Multiplying by 9
[Free Registration/Login may be required to access all resource tools.] The video explains the connection from multiplication to repeated addition with multiplying by eight. The video is followed by a series of practice questions to...
CK-12 Foundation
Ck 12: Elem Math: Multiplying by 11
[Free Registration/Login may be required to access all resource tools.] The video describes how to multiply by 11 using repeated addition. The video is followed by a series of practice questions to assess student comprehension of the...
CK-12 Foundation
Ck 12: Elem Math: Understanding Grouping With Illustrations
[Free Registration/Login may be required to access all resource tools.] The video shows how to use grouping with pictures to determine how many total groups of three are displayed. The video is followed by additional problems for...
CK-12 Foundation
Ck 12: Elem Math: Turning Numbers Into Words Within Word Problems
[Free Registration/Login may be required to access all resource tools.] The video describes how to change a number into the corresponding words, with a number in the hundreds place including a review of place value. The video is followed...
CK-12 Foundation
Ck 12: Elem Math: Identifying Values of Digits
[Free Registration/Login may be required to access all resource tools.] The video reviews place value and shows how to determine the value of each digit in a number. The video is followed by a series of practice questions to assess...
CK-12 Foundation
Ck 12: Elem Math: Comparing Digit Values in Numbers
[Free Registration/Login may be required to access all resource tools.] The video describes how to determine which number has a 9 in the tens place, discussing place value of digits. The video is followed by practice problems to assess...
CK-12 Foundation
Ck 12: Elem Math: Comparing Digit Values in Numbers Numbers to 10000
[Free Registration/Login may be required to access all resource tools.] The video describes how to determine which number has a 5 in the tens place. The video is followed by practice problems to assess student understanding of the concept.
CK-12 Foundation
Ck 12: Elem Math: Decomposing Decimals Into Place Values to Tenths
[Free Registration/Login may be required to access all resource tools.] The video discusses how to identify place value of digits in the ones and tenths place. The video is followed by practice problems to assess student understanding of...
CK-12 Foundation
Ck 12: Elem Math: Expressing Decimals in Thousandths
[Free Registration/Login may be required to access all resource tools.] The video describes how to express a number in thousandths by moving the decimal to the right. The video is followed by additional problems for students to practice...
CK-12 Foundation
Ck 12: Elem Math: Decomposing Decimals Into Place Values to Thousandths
[Free Registration/Login may be required to access all resource tools.] The video describes how to determine which digit is in the thousandths place value by breaking down every digit in the number according to the place value. The video...
CK-12 Foundation
Ck 12: Elem Math: Comparing and Writing Decimal Inequalities
[Free Registration/Login may be required to access all resource tools.] The video shows how to compare two decimals using the appropriate inequality sign. The video is followed by practice problems to assess student understanding of the...
CK-12 Foundation
Ck 12: Elem Math: Arranging a Set of Decimals in Order of Increasing Value
[Free Registration/Login may be required to access all resource tools.] The video describes how to use place value to compare digits in order to arrange a set of decimals from least to greatest. The video is followed by practice problems...