Math Is Fun
Math Is Fun: Addition in Columns
Simple instruction on how to perform addition of two- and three-digit numbers using columns. View animated examples and follow links to column addition worksheets.
Cool Math
Coolmath: Coolmath4kids: Scratch Addition
Demonstrates a method for easily adding long vertical columns of numbers. Includes two sample problems to try.
Mangahigh
Mangahigh: Number: Addition and Subtraction Column Method
Test your knowledge of addition and subtraction using the column method.
CK-12 Foundation
Ck 12: Elem Math: Adding and Subtracting Money With Pictures in Columns
[Free Registration/Login may be required to access all resource tools.] The resource begins with a video that describes and shows the process of adding money by lining them up in columns. The pictures included in the video and the...
NumberNut
Number Nut: Addition: Adding Three Digit Numbers
Explains how to add three-digit numbers by focusing on each column of digits as you add.
NumberNut
Number Nut: Addition: Adding Two Digit Numbers
Explains how to add two-digit numbers by focusing on each column of digits as you add, rather than the entire numbers.
NumberNut
Number Nut: Addition: Carrying
This lesson provides the rules for carrying values in addition by giving examples and the steps involved in the process.
Cool Math
Coolmath: Coolmath4kids: Adding Numbers Within 1000
Step-by-step tutorial showing how to add 3-digit numbers in place value columns with and without regrouping. CCSS.Math.Content.3.NBT.A.2 Fluently add and subtract within 1000
NumberNut
Number Nut: Addition: 2 Digit Numbers
Learn how to add double-digit numbers in this lesson complete with examples, rules, and vocabulary.
Mr. Martini's Classroom
Mr. Martini's Classroom: Adding 2 Digit Numbers Showing the 1 Carry
Students add two-digit numbers with these interactive flashcards. The resource demonstrates how to carry a "1" in the tens or hundreds column.
Beacon Learning Center
Beacon Learning Center: Show Me the Money
Students can practice lining up decimals while adding money amounts in this interactive web lesson.
University of Cambridge
University of Cambridge: Nrich: Magic Squares
In a Magic Square all the rows, columns and diagonals add to the same number. This number is called the Magic Constant. Learn math fundamentals visually and have fun at the same time.
Cool Math
Coolmath: Coolmath4kids: Adding Numbers Within 100
A step-by-step tutorial showing how to add 2-digit numbers in place value columns without regrouping. Includes exercises to try. CCSS.Math.Content.3.NBT.A.2 Fluently add and subtract within 1000
Other
Loc: American Life in Poetry
Each week, Ted Kooser, U.S. Poet Laureate from 2004 to 2006, creates a column on contemporary American poetry for newspapers and online publications. His columns include a brief introduction or reflection, followed by the text of a poem....
Math Cats
Math Cats: Place Value Party
In this interactive activity you must move value from column to column to create equal values using addition and subtraction skills.
NumberNut
Number Nut: Subtraction: 3 Digit Numbers
A brief lesson on subtracting from three-digit numbers that includes detailed examples, rules, and further explanation of borrowing.
Other
Allmath.com: Magic Squares Game
Magic squares have been a fascinating topic in mathematics for centuries. They are formed by filling in all the squares with the numbers starting from one so that the sum of all rows, columns, and diagonals is the same. Instructions are...
Other
R Campus: Rubric Studio & Rubric Gallery
This is a great free rubrics site. The Rubric Studio is a comprehensive rubric design and assessment tool. Teachers can build simple rubrics or complex rubrics with multiple sections and flexible number of rows and columns. In addition,...
Other
New Mexico Museum of Natural History and Science: Coelophysis
The Coelophysis is New Mexico's official state fossil. It lived in the late Triassic Period and has only been found in New Mexico. Popular questions about this dinosaur are answered here. In addition, there are numerous documents about...
ReadWriteThink
Read Write Think: Analyzing Advice as an Introduction to Shakespeare
Contains plans for four lessons that use a "Chicago Tribune" column and other modern sources to teach about the advice that Polonius gives to Laertes in Shakespeare's "Hamlet." In addition to objectives and standards, this instructional...
University of Georgia
University of Georgia: Inter Math: Dilation
This site defines dilation and gives an example with a diagram. There is also an interactive activity involving a JavaSketchPad page in which you can explore dilations. In addition, be sure to follow the links to related terms, more...
University of Georgia
University of Georgia: Inter Math: Angle of Rotation
This site gives a definition of angle of rotation and provides some examples. There is also an interactive activity in which a JavaSketchPad page is provided for you to explore rotations. In addition, be sure to follow the links to...
Other
Stat Soft: Statistics Glossary
Dozens of statistical terms are defined and illustrated in this glossary.
Louisiana Department of Education
Louisiana Doe: Louisiana Believes: Eureka Math Parent Guide: Foundations of Multiplication and Division
A guide to support parents as they work with their students in the foundations of multiplication and division.
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