CK-12 Foundation
Ck 12: Elem Math: Adding or Subtracting Lengths in One Step
[Free Registration/Login may be required to access all resource tools.] The video describes how to add and subtract measurements of length from a given word problem. The video is followed by practice problems covering the topics in the...
CK-12 Foundation
Ck 12: Elem Math: Fact Families Numbers to 100
[Free Registration/Login may be required to access all resource tools.] The video shows how to determine the missing number sentence by using fact families.
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: 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: 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: 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: Adding and Subtracting Numbers Up to 20 Word Problems
[Free Registration/Login may be required to access all resource tools.] The video describes how to solve word problems where they have to add or subtract 3 or more numbers.
CK-12 Foundation
Ck 12: Elem Math: Adding and Subtracting Three or More Numbers
[Free Registration/Login may be required to access all resource tools.] This is a set of practice problems where students are given word problems where they have to add or subtract 3 or more 1-digit numbers.
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: Adding and Subtracting With Parentheses
[Free Registration/Login may be required to access all resource tools.] The resource includes a video tutorial on how to find a missing number in a multi-operational problem by working backwards. The video is followed by practice...
CK-12 Foundation
Ck 12: Elem Math: Adding Two Digit Numbers With Regrouping
[Free Registration/Login may be required to access all resource tools.] The video models how to add two-digit numbers using regrouping. The video is followed by practice problems.
CK-12 Foundation
Ck 12: Elem Math: Adding 3 Numbers Word Problems
[Free Registration/Login may be required to access all resource tools.] This mathematics resource begins with a video tutorial working through a word problem adding 3 whole numbers. It also includes adaptive practice questions for adding...
CK-12 Foundation
Ck 12: Elem Math: Adding Lengths in Meters
[Free Registration/Login may be required to access all resource tools.] The video is a demonstration of how to add two different lengths in meters. The practice problems following the video involve adding two different lengths in meters.
CK-12 Foundation
Ck 12: Elem Math: Adding Lengths in Centimeters
[Free Registration/Login may be required to access all resource tools.] The video is a demonstration of how to add two different lengths in centimeters. The practice problems following the video involve adding two different lengths in...
CK-12 Foundation
Ck 12: Elem Math: Adding Capacities in Compound Units English Units
[Free Registration/Login may be required to access all resource tools.] The video demonstrates how to convert multiple units to the smallest unit of measurement in order to add and write the solution as a compound unit. Practice problems...
CK-12 Foundation
Ck 12: Elem Math: Adding and Subtracting Fractions With Different Denominators
[Free Registration/Login may be required to access all resource tools.] This video gives steps of finding common denominators and then adding and subtracting multiple fractions together. After the video, there are practice problems...
CK-12 Foundation
Ck 12: Elem Math: Adding Compound Units Metric Units
[Free Registration/Login may be required to access all resource tools.] Video and practice adding two compound units.
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: Adding and Subtracting With Parentheses Ii
[Free Registration/Login may be required to access all resource tools.] The video in the resource shows how to find a missing operation in a multi-step problem by working backwards. The practice problems involve finding either a missing...
CK-12 Foundation
Ck 12: Elem Math: Adding Using Tens and Ones
[Free Registration/Login may be required to access all resource tools.] The video utilizes a picture model to describe how to add using tens and ones. The video is followed by additional practice problems.
CK-12 Foundation
Ck 12: Elem Math: Fact Families Numbers to 1000
[Free Registration/Login may be required to access all resource tools.] The video shows how to determine the missing number sentence when adding and subtracting 3-digit numbers by using fact families.
PBS
Pbs Learning Media: Teaching Tips: Deductive and Inductive Reasoning (1St Grade)
Use these teaching tips from the PBS Kids Lab to help children make sense of problems and persevere in solving them, determine the unknown whole number in an addition or subtraction equations, use addition and subtraction within 20 to...
Lawrence Hall of Science
The Math Page: Skill in Arithmetic: Elementary Addition
This resource offers six brief arithmetic lessons: sums less than ten, sums of ten, and sums between ten and twenty, doubling, zero, and a set of general practice problems.
Other
Pep: Hit the Deck: A Collection of Math Games
This is a collection of math games ranging from Kindergarten to the upper elementary grades, using only an ordinary deck of playing cards. There are games covering addition, subtraction, multiplication, division, fractions, percents,...